Methods for LTE Cell Search with Large Frequency Offset

Methods and devices for LTE cell search with large frequency offset are disclosed. In one embodiment of the invention, a UE divides the received signals into multiple frequency bins and transforms the signals into frequency domain through FFT. The UE performs correlating measures between the received signals and reference signals. The UE then performs an adaptive multi-try based peak selection such that the number of candidate is reduced. In one embodiment of the invention, the multi-try number is adaptively adjusted based on the channel condition. In one embodiment of the invention, the threshold of the peak selection is adaptively adjusted. In other embodiments of the invention, the UE performs non-coherent accumulation and selects a predefined number of coarse bin candidates. The number of non-coherent accumulation is adaptively adjusted. In another embodiment of the invention, the UE performs fractional frequency offset estimation and selects a fine bin candidate. 1. A method , comprising:receiving a signal from a radio channel and computing frequency domain symbols of the received signal and a reference signal through a Fast Fourier Transform (FFT);dividing the received signal and the reference signal into a plurality of frequency bins, wherein the received signal in each frequency bin with a Primary Synchronization Code (PSC) is a first-group candidate;performing correlating measures between the received signal and the reference signals and de-mapping from the frequency domains through an Inverse Fast Fourier Transform (IFFT); andperforming an adaptive multi-try based peak selection to select a plurality of second-group candidates, wherein a multi-try number is adaptively adjusted and a threshold for each candidate is adaptively adjusted.2. The method of claim 1 , wherein the division of the received signal into multiple frequency bins is implemented by a circular shift method in frequency domain.3. The method of claim 1 , further comprising:performing a ...

METHODS AND SYSTEMS FOR TIME TRACKING IN OFDM SYSTEMS

Techniques proposed in the present disclosure may used to update an FFT window position and perform linear phase compensation for OFDM wireless systems with up to two antennas at the receiver. Techniques presented herein may help resolve a problem of determining an optimum FFT window position under the condition that the length of channel impulse response is larger than the length of cyclic prefix.

METHODS AND SYSTEMS USING FINE FREQUENCY TRACKING LOOP DESIGN FOR WIMAX

Certain embodiments of the present disclosure relate to a method for tracking of a carrier frequency offset. A soft combined frequency tracking discriminator is proposed as a part of the closed loop structure that can provide fast tracking of the frequency offset in an initial pull-in mode, and can also track small residual frequency variance in a fine-tracking mode.

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METHODS AND SYSTEMS USING FFT WINDOW TRACKING ALGORITHM

Techniques for the adjustment of a position of Fast Fourier Transform (FFT) window are provided. The adjustment may be based on the condition that the length of channel impulse response is larger than the length of cyclic prefix. The technique may determine a position of the FFT window that attempts to maximize carrier-to-noise (C/N) ratio value measured at the receiver.

Methods and systems using fine frequency tracking loop design for WiMAX

Certain embodiments of the present disclosure relate to a method for tracking of a carrier frequency offset. A soft combined frequency tracking discriminator is proposed as a part of the closed loop structure that can provide fast tracking of the frequency offset in an initial pull-in mode, and can also track small residual frequency variance in a fine-tracking mode.

Soldering iron

Frequency domain equalizer for single antenna radio

A Radio Frequency (RF) transceiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes time domain training symbols and time domain data symbols. The baseband processing module processes the time domain training symbols to produce a time domain channel estimate, Fast Fourier Transformer operations that convert the time domain channel estimate to the frequency domain to produce a frequency domain channel estimate, weight calculation operations that produce frequency domain equalizer coefficients based upon the frequency domain channel estimate, Inverse Fast Fourier Transformer operations that convert the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and equalization operations that equalize the time domain data symbols using the time domain equalizer coefficients.

Noise variance estimation for frequency domain equalizer coefficient determination

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to determine equalizer coefficients for a composite signal that includes a first information signal and a second information signal. First and second information signal channel estimates and channel powers based upon training symbols are determined. A composite signal power is determined. A noise variance of the composite signal is determined based upon the first information signal channel power, the second information signal channel power, and the composite signal power. A plurality of equalizer coefficients are determined based upon the first information signal channel estimate, the second information signal channel estimate, and the noise variance of the composite signal.

Frequency domain equalizer for dual antenna radio

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes time domain training symbols and time domain data symbols. The baseband processing module includes a channel estimator operable to process the time domain training symbols to produce a time domain channel estimate, a Fast Fourier Transformer operable to convert the time domain channel estimate to the frequency domain to produce a frequency domain channel estimate, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimate, an Inverse Fast Fourier Transformer operable to converting the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using the time domain equalizer coefficients.

Methods for Compensating for I/Q Imbalance in OFDM Systems

The present invention relates to methods for demodulating orthogonal frequency division multiplexing (OFDM) modulated signals. In particular, this invention relates to methods for in-phase (I) and quadrature phase (Q) imbalance compensation in OFDM systems. For example, the present invention relates to methods for calculating an IQ imbalance compensated signal from a received signal, comprising the steps of: removing DC from the received signal; calculating an autocorrelation matrix of IQ signal vector of the received signal; estimating IQ imbalance compensation values, K1 and K2, as a function of an amplitude imbalance, g, and a phase imbalance, θ; and calculating an IQ compensated signal as a function of the estimated K1 and K2.

METHODS AND SYSTEMS WITH SIMPLIFIED DOPPLER SPREAD CLASSIFICATION

Certain embodiments of the present disclosure propose methods and systems for classifying the Doppler spread based on the output of the frequency-tracking loop (FTL) discriminator in WiMAX systems to improve the performance of the channel estimation. The Doppler spread may be classified as low, medium or high based on the statistics of the output of the discriminator in the fine-tracking mode.

Frequency domain equalizer for dual antenna radio

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes time domain training symbols and time domain data symbols. The baseband processing module includes a channel estimator operable to process the time domain training symbols to produce a time domain channel estimate, a Fast Fourier Transformer operable to convert the time domain channel estimate to the frequency domain to produce a frequency domain channel estimate, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimate, an Inverse Fast Fourier Transformer operable to converting the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using the time domain equalizer coefficients.

SINGLE-LAYER LIGHT-EMITTING DIODES USING ORGANOMETALLIC HALIDE PEROVSKITE/IONIC-CONDUCTING POLYMER COMPOSITE

Single-layer LEDs were developed using a composite thin film of organometal halide perovskite (Pero) and poly (ethylene oxide) (PEO). Single-layer Pero LEDs have a device structure that resembles “bottom electrode (ITO)/Pero-PEO/top electrode (In/Ga or Au)”. Green emission LEDs with methylammonium lead bromide (bromide-Pero) and PEO composite thin films exhibit a low turn-on voltage of about 2.8-3.1 V (defined at 1 cd mluminance), a maximum luminance of 4064 cd mand a moderate maximum current efficiency of about 0.24-0.74 cd A. Blue and red emission LEDs have also been fabricated using Cl/Br or Br/I alloyed Pero-PEO composite thin films. 1. A method for producing a single layer thin film optoelectric device , comprising:forming an organometal halide perovskite (Pero) precursor;adding an ionic-conducting polymer (ICP) to the Pero precursor to form a Pero-ICP precursor;coating a substrate with the Pero-ICP precursor to form a Pero-ICP composite layer; andannealing the Pero-ICP composite layer.2. The method of claim 1 , wherein the Pero precursor comprises a mixture of AX and BX claim 1 , where A is a cation claim 1 , B is a metal claim 1 , and X is a halide ion.3. The method of claim 2 , wherein A comprises methylammonium (CHNH) claim 2 , formamidinium (NHCHNH) claim 2 , cesium (Cs) claim 2 , or mixtures thereof.4. The method of claim 2 , wherein B comprises lead (Pb) claim 2 , tin (Sn) claim 2 , germanium (Ge) claim 2 , or mixtures thereof.5. The method of claim 2 , wherein X comprises fluoride (F) claim 2 , chloride (Cl) claim 2 , bromide (Br) claim 2 , iodide (I) claim 2 , astatide (At) claim 2 , or mixtures thereof.6. The method of claim 2 , wherein forming the Pero precursor comprises mixing AX and BX in a ratio of approximately 1.5 mole AX to 1 mole BX.7. The method of claim 6 , wherein the Pero precursor further comprises dimethylformamide or dimethylsulfoxide.8. The method of claim 1 , wherein the ICP comprises oligomers or polymers of ethylene oxide claim 1 , ...

Methods for LTE cell search with large frequency offset

Methods and devices for LTE cell search with large frequency offset are disclosed. In one embodiment of the invention, a UE divides the received signals into multiple frequency bins and transforms the signals into frequency domain through FFT. The UE performs correlating measures between the received signals and reference signals. The UE then performs an adaptive multi-try based peak selection such that the number of candidate is reduced. In one embodiment of the invention, the multi-try number is adaptively adjusted based on the channel condition. In one embodiment of the invention, the threshold of the peak selection is adaptively adjusted. In other embodiments of the invention, the UE performs non-coherent accumulation and selects a predefined number of coarse bin candidates. The number of non-coherent accumulation is adaptively adjusted. In another embodiment of the invention, the UE performs fractional frequency offset estimation and selects a fine bin candidate.

PRINTED HALIDE PEROVSKITE LIGHT-EMITTING DIODES AND METHOD OF MANUFACTURE

Printed poly(ethylene oxide) (PEO) organometallic halide Perovskite (Pero) optoelectronic devices, including light emitting diodes (LEDs) fabricated on both rigid indium tin oxide (ITO)/glass and flexible carbon nanotube (CNTs)/polymer substrates using a composite thin film of PEO and Br-Pero as the light-emitting layer. Method of manufacturing Printed poly(ethylene oxide) (PEO) organometallic halide Perovskite (Pero) optoelectronic devices performed in an environment at a temperature of about 25° C. and a relative humidity between about 70% and 80%.

Single-layer light-emitting diodes using organometallic halide perovskite/ionic-conducting polymer composite

Single-layer LEDs were developed using a composite thin film of organometal halide perovskite (Pero) and poly (ethylene oxide) (PEO). Single-layer Pero LEDs have a device structure that resembles “bottom electrode (ITO)/Pero-PEO/top electrode (In/Ga or Au)”. Green emission LEDs with methylammonium lead bromide (bromide-Pero) and PEO composite thin films exhibit a low turn-on voltage of about 2.8-3.1 V (defined at 1 cd m−2 luminance), a maximum luminance of 4064 cd m−2 and a moderate maximum current efficiency of about 0.24-0.74 cd A−1. Blue and red emission LEDs have also been fabricated using Cl/Br or Br/I alloyed Pero-PEO composite thin films.

Single-Layer Light-Emitting Diodes Using Organometallic Halide Perovskite/Ionic-Conducting Polymer Composite

Single-layer LEDs were developed using a composite thin film of organometal halide perovskite (Pero) and poly (ethylene oxide) (PEO). Single-layer Pero LEDs have a device structure that resembles “bottom electrode (ITO)/Pero-PEO/top electrode (In/Ga or Au)”. Green emission LEDs with methylammonium lead bromide (bromide-Pero) and PEO composite thin films exhibit a low turn-on voltage of about 2.8-3.1V (defined at 1 cd m −2 luminance), a maximum luminance of 4064 cd m −2 and a moderate maximum current efficiency of about 0.24-0.74 cd A −1 . Blue and red emission LEDs have also been fabricated using Cl/Br or Br/I alloyed Pero-PEO composite thin films.

Power collection based adaptive length equalizer

A baseband processing module of a Radio Frequency receiver produces time domain equalizer coefficients and calculates a power threshold based upon a total power of a plurality of taps of the time domain equalizer coefficients. The baseband processing module then performs a plurality of iterations, during each of which it identifies at least one minimum power tap and determines a total power figure based upon zeroing the at least one minimum power tap. When the total power figure compares favorably to the power threshold, the baseband processing module modifies the plurality of taps by zeroing the at least one minimum power tap and continuing iterating. When the total power figure compares unfavorably to the power threshold, the baseband processing module ceases iterating without modifying the plurality of taps by zeroing the at least one minimum power tap and then produces modified time domain equalizer coefficients.

SIGNAL TRANSMITTING METHOD AND APPARATUS, STORAGE MEDIUM, AND USER TERMINAL

A method for transmitting a signal, and an apparatus, a storage medium, and a user terminal are provided. The method includes: determining a plurality of baseband signals of Component Carriers (CC); selecting a plurality of phase rotation factors and recording a number of times of selection by adding one each time of selection; determining a candidate signal and a Peak to Average Power Ratio (PAPR) of the candidate signal, wherein in response to the PAPR being greater than or equal to a preset threshold and the number of times of selections not reaching a preset number of times, reselecting phase rotation factors and re-determining another candidate signal and a PAPR of the another candidate signal, until a PAPR is less than the preset threshold or the number of times of selections reaches the preset number of times; and transmitting the candidate sign.

Methods and systems for time tracking in OFDM systems

Techniques proposed in the present disclosure may used to update an FFT window position and perform linear phase compensation for OFDM wireless systems with up to two antennas at the receiver. Techniques presented herein may help resolve a problem of determining an optimum FFT window position under the condition that the length of channel impulse response is larger than the length of cyclic prefix.

Methods for simplified MMI VQ based HARQ buffer reduction for LTE

Methods of simplified MMI VQ based HARQ buffer reduction are disclosed. In one embodiment of the invention, the VQ obtains distribution information from source data based on a predefined codebook subset design. The subset design is predefined. Source data is trained within its corresponding subset to generate codebook. In one embodiment of the invention, the predefined subset algorithm is based on the LLR sign value. In another embodiment of the invention, source data is divided into subset based on predefined algorithm. The index to codebook is generated by search through the corresponding subset of the codebook instead of the whole codebook. In one embodiment of the invention, the training method is a modified Lloyd algorithm for MMI VQ. In another embodiment of the invention, the training method is a modified Lloyd algorithm for Euclidean distance VQ.

Maximum energy delay locked loop for cluster path processing in a wireless device

A system for processing radio frequency (RF) signals includes a searcher and a Cluster Path Processor (CPP). The searcher detects a maximum signal energy level and position of at least one of a plurality of individual distinct path signals in a signal cluster, wherein at least a portion of the plurality of individual distinct path signals is received within a duration of a corresponding delay spread. The CPP includes a group finger array having a plurality of group fingers and determines a coarse sampling position of the group finger array based upon the position of the at least one of a plurality of individual distinct path signals in the signal cluster. The CPP determines a fine sampling position based upon determines a composite channel energy estimate for the plurality of individual distinct path signals. Using this fine sampling position, the CPP receives at least a portion of the plurality of individual distinct path signals by the group finger array.

ID-CELL INDEX SEARCH ALGORITHM AND CARRIER FREQUENCY OFFSET ESTIMATION

Techniques for initial wireless network synchronization by a mobile station are provided. For certain embodiments, the techniques may involve a joint search for the cell identification (ID-cell index) and the coarse carrier frequency offset (CFO) estimation. For certain embodiments, the techniques may be based on hard correlation and binary differential despreading that substantially simplifies computational complexity compare to known techniques that independently search for the ID-cell index and perform CFO estimation.

Maximum energy delay locked loop for cluster path processing in a wireless device

A system for processing radio frequency (RF) signals includes a searcher and a Cluster Path Processor (CPP). The searcher detects a maximum signal energy level and position of at least one of a plurality of individual distinct path signals in a signal cluster, wherein at least a portion of the plurality of individual distinct path signals is received within a duration of a corresponding delay spread. The CPP includes a group finger array having a plurality of group fingers and determines a coarse sampling position of the group finger array based upon the position of the at least one of a plurality of individual distinct path signals in the signal cluster. The CPP determines a fine sampling position based upon determines a composite channel energy estimate for the plurality of individual distinct path signals. Using this fine sampling position, the CPP receives at least a portion of the plurality of individual distinct path signals by the group finger array.

Printed halide perovskite light-emitting diodes and method of manufacture

Printed poly(ethylene oxide) (PEO) organometallic halide Perovskite (Pero) optoelectronic devices, including light emitting diodes (LEDs) fabricated on both rigid indium tin oxide (ITO)/glass and flexible carbon nanotube (CNTs)/polymer substrates using a composite thin film of PEO and Br-Pero as the light-emitting layer. Method of manufacturing Printed poly(ethylene oxide) (PEO) organometallic halide Perovskite (Pero) optoelectronic devices performed in an environment at a temperature of about 25° C. and a relative humidity between about 70% and 80%.

Superluminescent Halide Perovskite Light-Emitting Diodes with a Sub-Bandgap Turn-On Voltage

An emissive perovskite ternary composite thin film comprising a perovskite material, an ionic-conducting polymer and an ionic-insulating polymer is provided. Additionally, a single-layer LEDs is described using a composite thin film of organometal halide perovskite (Pero), an ionic-conducting polymer (ICP) and an ionic-insulating polymer (IIP). The LEDs with Pero-ICP-IIP composite thin films exhibit a low turn-on voltage of about 1.9V (defined at 1 cd mluminance) and a luminance of about 600,000 cd m.

Noise variance estimation for frequency domain equalizer coefficient determination

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to determine equalizer coefficients for a composite signal that includes a first information signal and a second information signal. First and second information signal channel estimates and channel powers based upon training symbols are determined. A composite signal power is determined. A noise variance of the composite signal is determined based upon the first information signal channel power, the second information signal channel power, and the composite signal power. A plurality of equalizer coefficients are determined based upon the first information signal channel estimate, the second information signal channel estimate, and the noise variance of the composite signal.

Method and System for Multimode DC Offset Compensation

Aspects of a method and system for multimode DC offset compensation are presented. Aspects of the system may include accumulating a selected number of signal samples, determining an average of the accumulated signal samples, and keeping a running total of the average for use feedback signal generation. The signal samples may be, for example, samples of WCDMA signals. By keeping track of the signal offset error, the signal offset error, or residual DC, may be determined. For example the signal offset error may comprise a DC component and/or a sinusoidal component. The number of signal samples to accumulate for the average may be based on the signal offset error. For example, a threshold may be determined as part of design of an embodiment of the invention.

Methods and Systems for Doppler Estimation and Adaptive Channel Filtering in a Communication System

A method for Doppler shift estimation for channel estimation of a received signal, comprising the steps of: calculating time domain correlations; providing a Hamming window over the calculated time domain correlations; calculating a power spectrum by using FFT; calculating an adaptive threshold based on a noise floor and an average power density calculated from the power spectrum; and estimating a Doppler shift based on the adaptive threshold.

Frequency domain equalizer with one dominant interference cancellation for dual antenna radio

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes desired signal and interfering signal time domain training symbols and time domain data symbols. The baseband processing module includes a channel estimator operable to process the desired signal and interfering signal time domain training symbols to produce a respective time domain channel estimates, a Fast Fourier Transformer operable to convert the time domain channel estimates to the frequency domain to produce frequency domain channel estimates, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimates, an Inverse Fast Fourier Transformer operable to convert the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using ...

Tool box

Methods and systems with simplified doppler spread classification

Certain embodiments of the present disclosure propose methods and systems for classifying the Doppler spread based on the output of the frequency-tracking loop (FTL) discriminator in WiMAX systems to improve the performance of the channel estimation. The Doppler spread may be classified as low, medium or high based on the statistics of the output of the discriminator in the fine-tracking mode.

Power collection based adaptive length equalizer

A baseband processing module of a Radio Frequency receiver produces time domain equalizer coefficients and calculates a power threshold based upon a total power of a plurality of taps of the time domain equalizer coefficients. The baseband processing module then performs a plurality of iterations, during each of which it identifies at least one minimum power tap and determines a total power figure based upon zeroing the at least one minimum power tap. When the total power figure compares favorably to the power threshold, the baseband processing module modifies the plurality of taps by zeroing the at least one minimum power tap and continuing iterating. When the total power figure compares unfavorably to the power threshold, the baseband processing module ceases iterating without modifying the plurality of taps by zeroing the at least one minimum power tap and then produces modified time domain equalizer coefficients.

Soldering iron

Haemophilus influenzae fusion protein and construction method and use thereof

Provided are a fusion protein and a construction method thereof. The fusion method consists of: a Haemophilus influenzae protein D and a Hin47 (Htra) protein. The fusion protein can serve as a protein vehicle for a Haemophilus influenzae polysaccharide-protein conjugate vaccine, thereby increasing immunogenicity of a polysaccharide antigen.

ID-cell index search algorithm and carrier frequency offset estimation

Techniques for initial wireless network synchronization by a mobile station are provided. For certain embodiments, the techniques may involve a joint search for the cell identification (ID-cell index) and the coarse carrier frequency offset (CFO) estimation. For certain embodiments, the techniques may be based on hard correlation and binary differential despreading that substantially simplifies computational complexity compare to known techniques that independently search for the ID-cell index and perform CFO estimation.

METHODS FOR SIMPLIFIED MMI VQ BASED HARQ BUFFER REDUCTION FOR LTE

Methods of simplified MMI VQ based HARQ buffer reduction are disclosed. In one embodiment of the invention, the VQ obtains distribution information from source data based on a predefined codebook subset design. The subset design is predefined. Source data is trained within its corresponding subset to generate codebook. In one embodiment of the invention, the predefined subset algorithm is based on the LLR sign value. In another embodiment of the invention, source data is divided into subset based on predefined algorithm. The index to codebook is generated by search through the corresponding subset of the codebook instead of the whole codebook. In one embodiment of the invention, the training method is a modified Lloyd algorithm for MMI VQ. In another embodiment of the invention, the training method is a modified Lloyd algorithm for Euclidean distance VQ. 1. A method , comprising:obtaining distribution information from a set of source data vectors based on a predefined codebook subset design;{'sub': 's', 'determining a codebook item number Nfor each codebook subset based on a predefined codebook length L and the distribution information;'}partitioning each source data vector into its corresponding codebook subset;training the source data vector within its codebook subset; andassigning a default codebook vector value to any codebook subset that does not have any source data vector in it.2. The method of further comprising:ordering the trained codebook of each subset to a final codebook with length L.3. The method of claim 1 , wherein the source data vectors are log-likelihood ratio (LLR) vectors claim 1 , and wherein the predefined codebook subset design is based on sign labels of the LLR vectors.4. The method of claim 3 , wherein the codebook training method for each subset involves applying a modified Lloyd algorithm for Vector Quantization (VQ).7. The method in further comprising:generating a set of codebook index for the source data vector and storing it in a HARQ ...

FAST LINK RE-SYNCHRONIZATION FOR TIME-SLICED OFDM SIGNALS

Methods having corresponding apparatus and computer-readable media comprise: receiving an estimated frame index, and an estimated symbol index, for a time-sliced OFDM signal; identifying a plurality of possible frame indexes, and a plurality of possible symbol indexes, based on the estimated frame index and the estimated symbol index; selecting a plurality of possible forward error correction code offsets based on the possible frame indexes and the possible symbol indexes; and selecting one of the possible frame indexes, and one of the possible symbol indexes, based on the possible forward error correction code offsets and a SYNC byte of the time-sliced OFDM signal.

Frequency domain equalizer for single antenna radio

A Radio Frequency (RF) transceiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes time domain training symbols and time domain data symbols. The baseband processing module processes the time domain training symbols to produce a time domain channel estimate, Fast Fourier Transformer operations that convert the time domain channel estimate to the frequency domain to produce a frequency domain channel estimate, weight calculation operations that produce frequency domain equalizer coefficients based upon the frequency domain channel estimate, Inverse Fast Fourier Transformer operations that convert the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and equalization operations that equalize the time domain data symbols using the time domain equalizer coefficients.

Signal transmitting method and apparatus, storage medium, and user terminal

A method for transmitting a signal, and an apparatus, a storage medium, and a user terminal are provided. The method includes: determining a plurality of baseband signals of Component Carriers (CC); selecting a plurality of phase rotation factors and recording a number of times of selection by adding one each time of selection; determining a candidate signal and a Peak to Average Power Ratio (PAPR) of the candidate signal, wherein in response to the PAPR being greater than or equal to a preset threshold and the number of times of selections not reaching a preset number of times, reselecting phase rotation factors and re-determining another candidate signal and a PAPR of the another candidate signal, until a PAPR is less than the preset threshold or the number of times of selections reaches the preset number of times; and transmitting the candidate signal.

SUPERLUMINESCENT HALIDE PEROVSKITE LIGHT-EMITTING DIODES WITH A SUB-BANDGAP TURN-ON VOLTAGE

An emissive perovskite ternary composite thin film comprising a perovskite material, an ionic-conducting polymer and an ionic-insulating polymer is provided. Additionally, a single-layer LEDs is described using a composite thin film of organometal halide perovskite (Pero), an ionic-conducting polymer (ICP) and an ionic-insulating polymer (IIP). The LEDs with Pero-ICP-IIP composite thin films exhibit a low turn-on voltage of about 1.9V (defined at 1 cd mluminance) and a luminance of about 600,000 cd m. 1. A single-layer thin film optoelectronic device comprising:an anode;an emissive perovskite ternary composite thin film comprising a perovskite material, an ionic-conducting polymer, and an ionic-insulating polymer, wherein the ionic-conducting polymer and the ionic-insulating polymer are dispersed in the perovskite material; anda cathode;wherein the emissive perovskite ternary composite thin film is arranged between and in contact with the anode and the cathode.2. The single-layer thin film optoelectronic device of claim 1 , wherein a weight ratio of the ionic-conducting polymer to the ionic-insulating polymer in the emissive perovskite ternary composite thin film is about 50:15 to about 50:30.3. The single-layer thin film optoelectronic device of claim 1 , wherein the perovskite material is an organometal halide perovskite material.4. The single-layer thin film optoelectronic device of claim 1 , wherein the perovskite material is a methylammonium lead halide (CHNHPbX) claim 1 , wherein X is a halide.5. The single-layer thin film optoelectronic device of claim 1 , wherein the perovskite material is selected from the group consisting of cesium lead halide (CsPbX) and cesium lead tribromide (CsPbBr) claim 1 , wherein X is a halide.6. The single-layer thin film optoelectronic device of claim 1 , wherein the ionic-conducting polymer is PEO (poly(ethylene oxide)).7. The single-layer thin film optoelectronic device of claim 1 , wherein the ionic-insulating polymer is PVP ( ...

Face recognition machine

Equalizer coefficient determination in the frequency domain for MIMO/MISO radio

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes multiple information signals, each having training symbols and time domain data symbols. The baseband processing module includes a channel estimator that processes the training symbols to produce respective time domain channel estimates, a Fast Fourier Transformer converts the time domain channel estimates to the frequency domain to produce frequency domain channel estimates, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimates, an Inverse Fast Fourier Transformer operable to convert the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using the time domain equalizer coefficients. The RF receiver supports STTD, MISO ...

Superluminescent halide perovskite light-emitting diodes with a sub-bandgap turn-on voltage

An emissive perovskite ternary composite thin film comprising a perovskite material, an ionic-conducting polymer and an ionic-insulating polymer is provided. Additionally, a single-layer LEDs is described using a composite thin film of organometal halide perovskite (Pero), an ionic-conducting polymer (ICP) and an ionic-insulating polymer (IIP). The LEDs with Pero-ICP-IIP composite thin films exhibit a low turn-on voltage of about 1.9V (defined at 1 cd m−2luminance) and a luminance of about 600,000 cd m−2.

Methods and Systems for Impulse Noise Compensation for OFDM Systems

Methods and systems are provided to reduce the effects of impulse noise in decoding a received OFDM signal by reducing the bit error number in burst error positions and by reducing the impulse noise contribution to channel estimation. In order to reduce the performance degradation due to impulse noise, it is important to find the position or the OFDM symbol where impulse noise occurs. The high noise variance gain can then be used for a Viterbi decoder to reduce the bit error number in burst error position, and also to reduce the contribution of the channel estimation by impulse noise in future channel estimations. Accordingly, the performance of the system can be greatly improved.

Method for enhancing immunogenicity of epitope peptide of HPV antigen, virus-like particle, and method for preparing HPV vaccine

A method for enhancing immunogenicity of an epitope peptide of an HPV antigen, the method including: assembling a gene of an HPV antigen into a gene of HBc, exogenously expressing a resulting assembled gene to acquire a fusion protein, allowing the fusion protein to automatically assemble to form a virus-like particle including the HPV antigen on a surface of the virus-like particle, to obtain HBc-HPV virus-like particle. A virus-like particle capable of expressing the antigen peptide of HPV acquired by the method. The virus-like particle includes a HBc-L2 fusion protein. A genome for encoding the HBc-L2 fusion protein is represented by SEQ ID NO. 3. A method for preparing an HPV vaccine includes using the virus-like particle.

Cell strain for reducing production of replication competent adenovirus, and construction method and use thereof

Provided are a cell strain HEK293.CS for reducing the production of a replication competent adenovirus, and a construction method and the use thereof. HEK293.CS is a safe adenovirus-producing cell line constructed by knocking out a gene fragment homologous to the Ad5 adenovirus E1 gene in HEK293 and providing a template plasmid to replace said gene fragment with a non-homologous sequence that stabilizes the expression of the E1 gene. Compared with the unmodified HEK293 cell strain, HEK293.CS shows no decrease in growth ability and virus production ability, but does not produce a detectable RCA. HEK293.CS can be used for the mass culture of a recombinant human type 5 adenovirus, and reducing the probability of RCA production in the manufacture process of drugs such as vaccines and antibodies.

Cluster path processor time alignment for signal suppression/separation in a wireless device

A system for processing radio frequency (RF) signals includes a searcher and a plurality of Cluster Path Processor (CPPs). The searcher detects a maximum signal energy level and position of at least one of a plurality of individual distinct path signals in a signal cluster of a first information signal, wherein at least a portion of the plurality of individual distinct path signals is received within a duration of a corresponding delay spread. The sampling position is used as a starting sampling location by the plurality of CPPs, including a first information signal CPP and a second information signal CPP. Fine sampling positions of the plurality of CPPs are based upon channel energy estimates for the plurality of individual distinct path signals. CPP outputs are employed to produce channel estimates, which are themselves used in subsequent equalization operations. Sampling positions may change over time in order to satisfy alignment criteria.

CO-CHANNEL INTERFERENCE AND ADJACENT CHANNEL INTERFERENCE DETECTION AND SUPPRESSION

Methods having corresponding apparatus and computer-readable media comprise: receiving an input signal, wherein the input signal includes a DVB-H signal; detecting co-channel interference (CCI) in the signal; suppressing the CCI in the input signal; and demodulating the DVB-H signal after suppressing the CCI.

Methods and systems using FFT window tracking algorithm

Techniques for the adjustment of a position of Fast Fourier Transform (FFT) window are provided. The adjustment may be based on the condition that the length of channel impulse response is larger than the length of cyclic prefix. The technique may determine a position of the FFT window that attempts to maximize carrier-to-noise (C/N) ratio value measured at the receiver.

Frequency domain equalizer with one dominate interference cancellation for dual antenna radio

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes desired signal and interfering signal time domain training symbols and time domain data symbols. The baseband processing module includes a channel estimator operable to process the desired signal and interfering signal time domain training symbols to produce a respective time domain channel estimates, a Fast Fourier Transformer operable to convert the time domain channel estimates to the frequency domain to produce frequency domain channel estimates, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimates, an Inverse Fast Fourier Transformer operable to convert the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using the time domain equalizer coefficients.

Methods For Coarse Frequency Offset Estimation For Orthogonal Frequency Division Multiplexing Schemes

The present invention provides methods for coarse frequency offset estimation, where those methods may comprise the steps of: removing fading channel impact by calculating accumulated correlation values; removing CCI and phase rotation due to large sampling offset by calculating an accumulation metric as a function of the accumulated correlation values, CCI peak, and initial sampling offset, ξ; and finding the coarse frequency offset as a function of the accumulation metric.

Methods for Decoding TPS Carriers in OFDM Systems

The present invention relates to methods for TPS demodulation, frame boundary detection, and TPS decoding. In particular, the present invention relates to a method for finding a frame boundary in demodulating an OFDM signal, comprising the steps of: differentially demodulating each symbol to generate differentially demodulated symbol bits; and finding a sync word position when the scatter pilot position equals zero, wherein the sync word position is set as the frame boundary.

Frequency domain equalizer for dual antenna radio

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes time domain training symbols and time domain data symbols. The baseband processing module includes a channel estimator operable to process the time domain training symbols to produce a time domain channel estimate, a Fast Fourier Transformer operable to convert the time domain channel estimate to the frequency domain to produce a frequency domain channel estimate, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimate, an Inverse Fast Fourier Transformer operable to converting the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using the time domain equalizer coefficients.

FREQUENCY DOMAIN EQUALIZER FOR DUAL ANTENNA RADIO

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes time domain training symbols and time domain data symbols. The baseband processing module includes a channel estimator operable to process the time domain training symbols to produce a time domain channel estimate, a Fast Fourier Transformer operable to convert the time domain channel estimate to the frequency domain to produce a frequency domain channel estimate, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimate, an Inverse Fast Fourier Transformer operable to converting the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using the time domain equalizer coefficients.

Cluster path processor time alignment for signal suppression/separation in a wireless device

A system for processing radio frequency (RF) signals includes a searcher and a plurality of Cluster Path Processor (CPPs). The searcher detects a maximum signal energy level and position of at least one of a plurality of individual distinct path signals in a signal cluster of a first information signal, wherein at least a portion of the plurality of individual distinct path signals is received within a duration of a corresponding delay spread. The sampling position is used as a starting sampling location by the plurality of CPPs, including a first information signal CPP and a second information signal CPP. Fine sampling positions of the plurality of CPPs are based upon channel energy estimates for the plurality of individual distinct path signals. CPP outputs are employed to produce channel estimates, which are themselves used in subsequent equalization operations. Sampling positions may change over time in order to satisfy alignment criteria.

SAMRNA VACCINE AND PREPARATION METHOD THEREFOR

Disclosed is an SamRNA vaccine, including a recombinant viral vector which includes: i) a viral gene replication complex including nucleotide sequences encoding viral gene replication-related proteins nsP1, nsP2, nsP3, and nsP4; and ii) a nucleotide sequence encoding at least one antigen. According to the SamRNA vaccine of the present invention, in addition to that a promoter of a modified adenoviral vector itself can transcribe an antigen gene to form mRNA, the viral gene replication-related proteins nsP1-4 use RNA as a template to synthesize a large amount of mRNAs, and the immune effect of a target antigen is greatly improved. 1. An SamRNA vaccine , comprising a recombinant viral vector which comprises: i) a viral gene replication complex comprising nucleotide sequences encoding viral gene replication-related proteins nsP1 , nsP2 , nsP3 , and nsP4; and ii) a nucleotide sequence encoding at least one antigen.2. The SamRNA vaccine according to claim 1 , wherein the recombinant viral vector is a recombinant adenovirus claim 1 , a chimpanzee adenovirus claim 1 , a recombinant vesicular stomatitis virus claim 1 , a recombinant poxvirus claim 1 , a recombinant dengue virus claim 1 , a recombinant Kunjin virus claim 1 , a recombinant sendai virus claim 1 , or a recombinant canine distemper virus.3. The SamRNA vaccine according to claim 1 , wherein the antigen causes an immune response against bacteria claim 1 , viruses claim 1 , fungi or parasites.4. The SamRNA vaccine according to claim 3 , wherein the antigen is a human herpes zoster virus gE protein claim 3 , a rotavirus VP4 or VP7 claim 3 , an HPV-L1 protein claim 3 , or an Ebola virus gP protein.5. The SamRNA vaccine according to claim 1 , wherein the antigen is a tumor-specific antigen claim 1 , and is selected from NY-ESO-1 claim 1 , SSX2 claim 1 , SCP1 claim 1 , RAGE claim 1 , BAGE claim 1 , GAGE claim 1 , MAGE family polypeptides claim 1 , p53 claim 1 , p21/Ras claim 1 , CDK4 claim 1 , MUM1 claim 1 , caspase-8 ...

METHOD FOR ENHANCING IMMUNOGENICITY OF EPITOPE PEPTIDE OF HPV ANTIGEN, VIRUS-LIKE PARTICLE, AND METHOD FOR PREPARING HPV VACCINE

A method for enhancing immunogenicity of an epitope peptide of an HPV antigen, the method including: assembling a gene of an HPV antigen into a gene of HBc, exogenously expressing a resulting assembled gene to acquire a fusion protein, allowing the fusion protein to automatically assemble to form a virus-like particle including the HPV antigen on a surface of the virus-like particle, to obtain HBc-HPV virus-like particle. A virus-like particle capable of expressing the antigen peptide of HPV acquired by the method. The virus-like particle includes a HBc-L2 fusion protein. A genome for encoding the HBc-L2 fusion protein is represented by SEQ ID NO. 3. A method for preparing an HPV vaccine includes using the virus-like particle. 1. A method for enhancing immunogenicity of an epitope peptide of an HPV antigen , the method comprising: assembling a gene of an HPV antigen into a gene of HBc , exogenously expressing a resulting assembled gene to acquire a fusion protein , allowing the fusion protein to automatically assemble to form a virus-like particle comprising the HPV antigen on a surface of the virus-like particle , to obtain HBc-HPV virus-like particle.2. The method of claim 1 , wherein the gene of the HPV antigen is a late transcribed region of HPV encoding a primary capsid protein L1 or a late transcribed region of HPV encoding a secondary capsid protein L2.3. The method of claim 1 , wherein the gene of the HPV antigen is a late transcribed region of HPV encoding a secondary capsid protein L2.4. The method of claim 1 , wherein the HPV antigen on the virus-like particle is one antigen peptide of L1 or one antigen peptide of L2 claim 1 , or multiple antigen peptides of L1 or L2 claim 1 , or a couplet of multiple antigen peptides of L1 or L2.6. The method of claim 1 , wherein the antigen peptide of HPV is totally exposed on the surface of the virus-like particle claim 1 , and the antigen peptide presented on the surface of the virus-like particle of HBc is multiple ...

Haemophilus influenzae fusion protein and construction method and use thereof

Provided are a fusion protein and a construction method thereof. The fusion method consists of: a protein D and a Hin47 (Htra) protein. The fusion protein can serve as a protein vehicle for a polysaccharide-protein conjugate vaccine, thereby increasing immunogenicity of a polysaccharide antigen. 1Haemophilus influenzaeHaemophilus influenzaeHaemophilus influenzae. A fusion protein obtainable by fusion of HiD protein and Hin47 protein , namely Hin47-HiD , wherein the amino acid sequence of Hin47 is the sequence shown in Sequence Listing <400> 1 , and the amino acid sequence of HiD is the sequence shown in Sequence Listing <400> 3; or ,{'i': Haemophilus influenzae', 'Haemophilus influenzae, 'the fusion protein is obtainable by fusion of HiD protein mutant and/or Hin47 protein mutant, the mutant each has 80% or more homology with the wild-type protein thereof.'}2. The fusion protein of claim 1 , wherein the fusion protein is obtainable by fusion of Hin47 and HiD in a 1:1 ratio through a linker claim 1 , the linker enables the monomers of Hin47 protein and HiD protein to maintain their own unique conformations.3. The fusion protein of claim 2 , wherein the linker is G4 S with the sequence shown in Sequence Listing <400> 2.4. The fusion protein of claim 1 , wherein the composition form of a gene for the fusion protein is (n)Hin47-linker-(n)HiD claim 1 , (n)HiD-linker-(n)Hin47 claim 1 , -linker-HiD-(Hin47-linker-HiD)n-linker-Hin47- claim 1 , -linker-Hin47-(HiD-linker-Hin47)n-linker-HiD- claim 1 , wherein n is 1-3 claim 1 , representing the number of copies of the genes for the monomers.5. The fusion protein of claim 1 , wherein the composition form of the gene for the fusion protein is -linker-(Hin47-linker-HiD-linker)n-Hin47- claim 1 , -linker-(HiD-linker-Hin47-linker)n-HiD- claim 1 , wherein n is 1-3 claim 1 , representing the number of copies of the genes for the monomers.6. The fusion protein of claim 1 , wherein the fusion protein is used as a protein carrier in the ...

CELL STRAIN FOR REDUCING PRODUCTION OF REPLICATION COMPETENT ADENOVIRUS, AND CONSTRUCTION METHOD AND USE THEREOF

Provided are a cell strain HEK293.CS for reducing the production of a replication competent adenovirus, and a construction method and the use thereof. HEK293.CS is a safe adenovirus-producing cell line constructed by knocking out a gene fragment homologous to the Ad5 adenovirus E1 gene in HEK293 and providing a template plasmid to replace said gene fragment with a non-homologous sequence that stabilizes the expression of the E1 gene. Compared with the unmodified HEK293 cell strain, HEK293.CS shows no decrease in growth ability and virus production ability, but does not produce a detectable RCA. HEK293.CS can be used for the mass culture of a recombinant human type 5 adenovirus, and reducing the probability of RCA production in the manufacture process of drugs such as vaccines and antibodies. 1. A cell strain for reducing the production of replication competent adenovirus , wherein it is a cell strain HEK293.CS , and in the cell strain HEK293.CS a non-coding region of the cell strain HEK293 E1 gene is replaced with a heterologous control element.2. The cell strain for reducing replication competent adenovirus production according to claim 1 , wherein in the cell strain HEK293.CS the ITR and E1A Promoter sequences of the cell strain HEK293 E1 gene is replaced with a heterologous control element.3. The cell strain for reducing replication competent adenovirus production according to claim 2 , wherein the heterologous control element is PGK Promoter claim 2 , and the base sequence of the PGK promoter is represented by the sequence of SEQ ID NO:1 in the Sequence Listing.4. A method for constructing a cell strain for reducing the production of replication competent adenovirus according to claim 1 , wherein the specific steps are as follows:(1) designing, synthesizing, and annealing to obtain four sgRNAs, which are designated as sgRNA1, sgRNA2, sgRNA3, and sgRNA4;(2) preparing a PX462.V2.0 plasmid containing Cas9n enzyme, and digesting the plasmid with Bsal;(3) ligating ...

Frequency domain estimation of equalizer coefficients for dual antenna radio

A Radio Frequency receiver includes an RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes training symbols and data symbols. The baseband processing module includes a channel estimator operable to process the training symbols to produce a channel estimate, a Fast Fourier Transformer operable to convert the channel estimate to the frequency domain, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimate, an Inverse Fast Fourier Transformer operable to converting the frequency domain equalizer coefficients to the time domain, and an equalizer operable to equalize the data symbols using the time domain equalizer coefficients.

Fast link re-synchronization for time-sliced ofdm signals

Methods having corresponding apparatus and computer-readable media comprise: receiving an estimated frame index, and an estimated symbol index, for a time-sliced OFDM signal; identifying a plurality of possible frame indexes, and a plurality of possible symbol indexes, based on the estimated frame index and the estimated symbol index; selecting a plurality of possible forward error correction code offsets based on the possible frame indexes and the possible symbol indexes; and selecting one of the possible frame indexes, and one of the possible symbol indexes, based on the possible forward error correction code offsets and a SYNC byte of the time-sliced OFDM signal.

Methods and systems for time tracking in ofdm systems

Techniques proposed in the present disclosure may used to update an FFT window position and perform linear phase compensation for OFDM wireless systems with up to two antennas at the receiver. Techniques presented herein may help resolve a problem of determining an optimum FFT window position under the condition that the length of channel impulse response is larger than the length of cyclic prefix.

Mrna or mrna composition, and preparation method therefor and application thereof

Provided are an mRNA or an mRNA composition, and an mRNA vaccine comprising the mRNA or the mRNA composition. The mRNA or the mRNA composition comprises an mRNA sequence encoding an S protein of a novel coronavirus SARS-CoV-2 or a variant thereof, and an mRNA sequence encoding an RBD in the S protein or a variant thereof. Further provided are the applications of the mRNA or the mRNA composition, and the mRNA vaccine comprising the mRNA or the mRNA composition in preparation of a medication for preventing and/or treating a disease caused by a novel coronavirus SARS-CoV-2 infection.

Method and device for determining arrival time, terminal device, and storage medium

A method and device for determining a time of arrival (TOA), a terminal device, and a non-transitory computer-readable storage medium are disclosed. The method may include: determining a detection start time on a correlation waveform based on a leading edge detection threshold; determining a noise threshold on the correlation waveform, and determining a quasi-TOA according to the detection start time; and determining the TOA according to data information in a target area of the correlation waveform and the noise threshold, where the target area is determined based on the quasi-TOA and a detection length.

Method for preparing adenovirus vector vaccine by means of perfusion culture process

Provided is a method for preparing an adenovirus vector vaccine by means of a perfusion culture process. The method comprises a step of culturing adenovirus host cells, and in particular a step of adjusting the perfusion rate by means of at least two stages according to cell density. The method increases the single cell yield of a virus after infection and the specific activity of a virus harvest liquid while achieving high-density growth of adenovirus host cells.

Mrna or mrna composition, and preparation method therefor and application thereof

Mrna or mrna composition, and preparation method therefor and application thereof

Provided are an mRNA or an mRNA composition, and an mRNA vaccine comprising the mRNA or the mRNA composition. The mRNA or the mRNA composition comprises an mRNA sequence encoding an S protein of a novel coronavirus SARS-CoV-2 or a variant thereof, and an mRNA sequence encoding an RBD in the S protein or a variant thereof. Further provided are the applications of the mRNA or the mRNA composition, and the mRNA vaccine comprising the mRNA or the mRNA composition in preparation of a medication for preventing and/or treating a disease caused by a novel coronavirus SARS-CoV-2 infection.

Method and apparatus for determining delay compensation value, device, and storage medium

Provided are a method and apparatus for determining a delay compensation value, a device, and a computer-readable storage medium. The method includes: obtaining a channel frequency domain impulse response of a transmit link, where the transmit link is obtained by combining at least two hardware modules in a transmit circuit, obtaining a time domain impulse response according to the channel frequency domain impulse response, and determining a delay compensation value of the transmit link according to a preset condition and the time domain impulse response.

Cooperative positioning method and apparatus, device, and storage medium

Disparity estimation method and apparatus, and image processing device and storage medium

Provided are a disparity estimation method and apparatus, an image processing device, and a storage medium. The method includes: processing input images based on a first network model to obtain a direct cost volume of the input images, where the input images include a first image and a second image, and the first network model includes a convolutional neural network, a pyramid convolutional network, and a spatial pyramid pooling layer; processing the input images based on a second network model to obtain an associated cost volume of the input images, where the second network model includes a residual network; determining an estimated cost of the input images according to the associated cost volume and the direct cost volume; and calculating an estimated disparity corresponding to the first image and the second image according to the estimated cost.

Cell strain for reducing production of reproducible adenovirus, and construction method and use

Cell strain for reducing production of reproducible adenovirus, and construction method and use

Method and apparatus for determining time delay compensation value, and device and storage medium

Disclosed are a method and apparatus for determining a time delay compensation value, and a device and a computer-readable storage medium. The method comprises: obtaining a channel frequency-domain impulse response of a transmission link, wherein the transmission link is obtained by combining at least two hardware modules in a transmission circuit; and obtaining a time-domain impulse response according to the channel frequency-domain impulse response; and then, determining a time delay compensation value of the transmission link according to a preset condition and the time-domain impulse response.

Vacina do vetor adenoviral sars-cov-2 recombinante, uso de um gene da proteína s de sars-cov-2 e uso de um adenovírus recombinante

VACINA DO VETOR ADENOVIRAL SARS-COV-2 RECOMBINANTE, USO DE UM GENE DA PROTEÍNA S DE SARS-COV-2 E USO DE UM ADENOVÍRUS RECOMBINANTE. Divulga-se uma vacina SAR-CoV-2, para a qual a proteína S de SAR-CoV-2 serve como antígeno, a forma da vacina compreende uma vacina vetorial adenoviral, e a vacina produz uma resposta imunológica com características protetoras aprimorada por meio de imunidade transmucosa, prevenindo assim a infecção pelo SAR-CoV-2. Especificamente, a vacina é nebulizada por equipamentos adequados para produzir partículas homogêneas que podem ser inaladas nasal ou oralmente para alcançar os pulmões, produzindo assim uma resposta imunológica protetora em todo o trato respiratório, bem como nos pulmões, aperfeiçoando a utilização eficaz da vacina e melhorando sua eficácia.

Haemophilus influenzae fusion protein and construction method and use thereof

Provided are a fusion protein and a construction method thereof. The fusion protein consists of: a Haemophilus influenzae protein D and a Hin47 (Htra) protein. The fusion protein can serve as a protein vehicle for a Haemophilus influenzae polysaccharide-protein conjugate vaccine, thereby increasing immunogenicity of a polysaccharide antigen.

Samrna vaccine and preparation method therefor

Disclosed is an SamRNA vaccine, including a recombinant viral vector which includes: i) a viral gene replication complex including nucleotide sequences encoding viral gene replication-related proteins nsP1, nsP2, nsP3, and nsP4; and ii) a nucleotide sequence encoding at least one antigen. According to the SamRNA vaccine of the present invention, in addition to that a promoter of a modified adenoviral vector itself can transcribe an antigen gene to form mRNA, the viral gene replication-related proteins nsP1-4 use RNA as a template to synthesize a large amount of mRNAs, and the immune effect of a target antigen is greatly improved.

Samrna vaccine and preparation method therefor

Disclosed is a SamRNA vaccine, the vaccine comprising a recombinant viral vector which comprises: i) a viral gene replication complex, the viral gene replication complex comprising nucleotide sequences encoding viral gene replication-related proteins, nsP1, nsP2, nsP3, and nsP4; and ii) a nucleotide sequence encoding at least one antigen.

Method and apparatus for determining time of arrival, signal receiving device, and storage medium

Method and device for determining arrival time, terminal device, and storage medium

Carrier protein subjected to site-directed mutation and use thereof in preparation of vaccine

Sars-cov-2 vaccine

Disclosed is a SARS-CoV-2 vaccine, wherein the S protein of SARS-CoV-2 serves as the antigen, and the vaccine comprises an adenoviral vector, and the vaccine induces an improved protective immune response through mucosal immunity, thus preventing SARS-CoV-2 infection. Specifically, when atomized by an appropriate apparatus, the vaccine generates particles of improved uniformity, which can reach the lungs after being inhaled via the nasal cavity or the oral cavity, thus producing a protective immune response with respect to the entire respiratory tract and the lungs, enhancing the effective utilization rate of the vaccine, and increasing the effect of the vaccine.

Method and apparatus for determining time of arrival, signal receiving device, and storage medium

Disclosed are a method and apparatus for determining time of arrival, a signal receiving device, and a storage medium. The method for determining time of arrival comprises: generating time of arrival correction information according to front edge information of theoretical autocorrelation waveforms of positioning signals having different fading values; calculating a front edge slope corresponding to a front edge reference point of a related waveform of the actually received signal; and determining target correction information from the time of arrival correction information according to the front edge slope, and determining the time of arrival of the actually received signal on the basis of the target correction information.

Haemophilus influenzae fusion protein and construction method and use thereof

Proteína de fusión de Haemophilus influenzae y método de construcción y uso de la misma

Proteína de fusión de Haemophilus influenzae Hin47-Ligador-HiD, en la que la secuencia de aminoácidos de Hin47 es la secuencia mostrada en SEQ ID NO.1, y la secuencia de aminoácidos de HiD es la secuencia mostrada en SEQ ID NO.3, y el ligador es G4S con la secuencia mostrada en SEQ ID NO.2, en la que la proteína de fusión tiene 790 aa y un peso molecular de 87 kD.

Carrier protein subjected to site-directed mutation and use thereof in preparation of vaccine

Provided are a protein antigen subjected to site-directed mutation and site-directed modification, and a method for site-directed mutation and site-directed modification of the protein antigen. The method comprises: site-directedly introducing an unnatural amino acid into a specific site of the protein antigen by genetic codon expansion technique; and performing site-directed modification with the protein antigen by the unnatural amino acid and a modifier, wherein the modifier is a receptor agonist such as tripalmitoyl-S-glyceryl cysteine and monophosphoryl lipid A. Further provided is use of the protein antigen subjected to site-directed mutation and site-directed modification, such as use as a vaccine.

Carrier protein subjected to site-directed mutation and use thereof in preparation of vaccine

Provided are a protein antigen subjected to site-directed mutation and site-directed modification, and a method for site-directed mutation and site-directed modification of the protein antigen. The method comprises: site-directedly introducing an unnatural amino acid into a specific site of the protein antigen by genetic codon expansion technique; and performing site-directed modification with the protein antigen by the unnatural amino acid and a modifier, wherein the modifier is a receptor agonist such as tripalmitoyl-S-glyceryl cysteine and monophosphoryl lipid A. Further provided is use of the protein antigen subjected to site-directed mutation and site-directed modification, such as use as a vaccine.

Carrier protein subjected to site-directed mutation and use thereof in preparation of vaccine

Provided are a protein antigen subjected to site-directed mutation and site-directed modification, and a method for site-directed mutation and site-directed modification of the protein antigen. The method comprises: site-directedly introducing an unnatural amino acid into a specific site of the protein antigen by genetic codon expansion technique; and performing site-directed modification with the protein antigen by the unnatural amino acid and a modifier, wherein the modifier is a receptor agonist such as tripalmitoyl-S-glyceryl cysteine and monophosphoryl lipid A. Further provided is use of the protein antigen subjected to site-directed mutation and site-directed modification, such as use as a vaccine.

一种配网线路巡检仪

本实用新型公开了一种配网线路巡检仪，涉及配电线路巡检装置技术领域，该配网线路巡检仪，包括检测仪壳体、智能显示器和固定块，所述检测仪壳体的一侧固定连接有智能显示器，所述检测仪壳体的一侧固定连接有固定块，所述固定块的内部开设有固定槽，所述固定块的底部一侧固定连接有固定板，所述固定块通过固定板与检测仪壳体固定连接。该配网线路巡检仪，一方面通过设置防滑套，有效的增强了对该装置本体的保护作用，有效的避免了仪器摔落而致其损坏，从而影响工作效率，另一方面橡胶材质具有良好的防滑性，通过设置防滑套的材质，有效的增强了使用者手部与防滑套的摩擦力，让使用者抓的更加牢固，有效的增强了对仪器的保护效果。

Networking signal sending method and apparatus for positioning network

Sars-cov-2 vaccine

Method for preparing adenovirus vector vaccine by means of perfusion culture process

Provided is a method for preparing an adenovirus vector vaccine by means of a perfusion culture process. The method comprises a step of culturing adenovirus host cells, and in particular a step of adjusting the perfusion rate by means of at least two stages according to cell density. The method increases the single cell yield of a virus after infection and the specific activity of a virus harvest liquid while achieving high-density growth of adenovirus host cells.

Method for preparing adenovirus vector vaccine by means of perfusion culture process

Method and device for determining arrival time, terminal device, and storage medium

Disclosed are a method and device for determining an arrival time, a terminal device, and a storage medium. The method for determining an arrival time comprises: determining, on the basis of a leading edge detection threshold, a detection start time on a related waveform; determining a noise threshold on the related waveform and determining a prospective arrival time on the basis of the detection start time; and determining an arrival time on the basis of data information in a target area of the related waveform and of the noise threshold, where the target area is determined on the basis of the prospective arrival time and of a detection length.

Method and system for multimode DC offset compensation

Verfahren und System zum multimodalen Ausgleich von DC-Offsets

Networking signal sending method and device for positioning network

Provided are a networking signal sending method and device for a positioning network. The method includes: determining a networking mode of the positioning network according to an application scene, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network; and configuring a positioning base station of the positioning network, or the positioning base station and a communication base station according to the networking mode, wherein the positioning base station is used for sending a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used for sending the synchronization signal.

Networking signal sending method and apparatus for positioning network

Provided are a networking signal sending method and device for a positioning network. The method includes: determining a networking mode of the positioning network according to an application scene, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network; and configuring a positioning base station of the positioning network, or the positioning base station and a communication base station according to the networking mode, wherein the positioning base station is used for sending a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used for sending the synchronization signal. The problems that the base station layout density is increased and the networking cost is increased due to communication base station positioning in the related technologies can be solved. The positioning base station of the positioning network is used for sending the positioning signal so that positioning function networking can be independently finished, the positioning base station and the communication base station can be networked in a joint mode, so that networking flexibility of the positioning network is kept, and positioning base station positioning has lower networking cost and higher positioning precision compared with communication base station positioning.

Soldering iron

Soldering gun

Method and apparatus for determining time delay compensation value, and device and storage medium

Electric screwdriver

Electric screwdriver

Soldering iron

Screwdriver

Frequency-domain data merging method and apparatus, and storage medium and electronic apparatus

Provided are a frequency-domain data merging method and apparatus, a storage medium, and an electronic apparatus. The method includes: respectively performing up-conversion on baseband data of a plurality of frequency bands in a frequency domain, so as to obtain frequency-domain received data of each frequency band from among the plurality of frequency bands that has been subjected to up-conversion; and merging the frequency-domain received data of each frequency band that has been subjected to up-conversion, so as to obtain merged frequency-domain received data.

Disparity estimation method and apparatus, and image processing device and storage medium

Provided are a disparity estimation method and apparatus, an image processing device, and a storage medium. The method includes: processing input images based on a first network model to obtain a direct cost volume of the input images, where the input images include a first image and a second image, and the first network model includes a convolutional neural network, a pyramid convolutional network, and a spatial pyramid pooling layer; processing the input images based on a second network model to obtain an associated cost volume of the input images, where the second network model includes a residual network; determining an estimated cost of the input images according to the associated cost volume and the direct cost volume; and calculating an estimated disparity corresponding to the first image and the second image according to the estimated cost.