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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 29. Отображено 29.
31-10-2016 дата публикации

HYBRID RECEIVER BASED ON SYSTEM LEVEL SIMULATION IN BACKHAUL SYSTEM

Номер: KR101670599B1
Автор: MOON, SANG MI, CHOE, HUN, CHU, MYEONG HUN, HWANG, IN TAE
Принадлежит: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

Provided is a hybrid receiver based on a system level simulation in a backhaul system. A hybrid receiver for a backhaul system according to the embodiment of the present invention as a full suppression cancellation (FSC) receiver combines IRC and SIC, so interference from an adjacent cell can be prevented and removed. To prevent or remove the interference in the backhaul, when the hybrid FSC receiver, according to the embodiments of the present invention is applied, a higher performance gain can be obtained compared to a receiver used in an existing mobile communication system. The hybrid receiver includes a calculation part; and a detection part. COPYRIGHT KIPO 2016 (AA) Start (BB) End (CC) Yes (DD) No (S210) Calculating an SIR of a receiving signal (S230) Detecting a magnetic signal through IRC (S240) Detecting an interference signal through SIC (S250) Detecting the magnetic signal through the SIC (S260) Detecting the interference signal through the IRC ...

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Номер записи: 1
20-03-2017 дата публикации

TERMINAL AND RECEIVER FOR CONTROLLING INTERFERENCE IN D2D COMMUNICATION SYSTEM, AND METHOD FOR CONTROLLING INTERFERENCE THEREOF

Номер: KR101717593B1
Автор: MOON, SANG MI, HUN, CHOE, CHU, MYEONG HUN, HWANG, IN TAE
Принадлежит: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

The present invention relates to a terminal and a receiver for controlling interference in a D2D communication system, and a method for controlling interference in the terminal. According to the present invention, in order to reduce interference between a cellular and a D2D, a new hybrid receiver of full suppression cancellation (FSC) is provided by combining interference rejection combining (IRC) with successive interference cancellation (SIC), thereby suppressing and removing the interference. Thus, performance is improved as compared with conventional receivers in terms of SINR, transmission rate, and spectral efficiency. COPYRIGHT KIPO 2017 (AA) Start (S300) Receive signal (S302) Perform Ordering / Nulling for received signal (S304) Performing cancelling with received signal (S306) Performing slicing by applying modulation-based hard decision ...

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Номер записи: 2
06-12-2016 дата публикации

IMPROVED HYBRID RECEIVER SYSTEM BASED ON SOFT DECISION FOR SUPPRESSING AND CANCELLING INTERFERENCE IN SIDEHAUL SYSTEM

Номер: KR1020160138646A
Автор: KIM, JI HYUNG, HWANG, IN TAE, KWON, TAE SOO, MOON, SANG MI, PARK, OK SUN, SARANSH MALIK, LEE, MOON SIK, CHOE, HUN
Принадлежит:

The present invention relates to an improved hybrid receiver system based on a soft decision (SD) of a sidehaul system for a next generation cellular system. The improved hybrid receiver system enables mobile small cells to suppress and cancel an influence of interference from surrounding small cells, thereby improving performance compared to mobile communication receiver performance of a successive interference cancellation (SIC) method, a full suppression and cancellation (FSC) method, and the like. COPYRIGHT KIPO 2016 (AA) Restored signal ...

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Номер записи: 3
10-06-2015 дата публикации

APPARATUS AND METHOD FOR ANALYZING PERFORMANCE ACCORDING TO CONTROLLING INTERCELL INTERFERENCE BASED ON CoMP IN A HETEROGENEOUS NETWORK

Номер: KR0101523509B1
Автор: 김보라, 문상미, 사란쉬 말리크, 황인태, 이칠우
Принадлежит: 전남대학교산학협력단

... 본 발명은 LTE-A(Long Term Evolution-Advanced) 네트워크의 이종 네트워크(HetNet: Heterogeneous) 환경에서 다중 포인트 협력 통신 기반으로 다양한 스케줄링 및 프리코딩을 적용한 후 성능 분석을 통해 성능이 향상됨을 확인하기 위한 이종 네트워크에서 다중 포인트 협력 통신 기반의 셀간 간섭 제어에 따른 성능 분석 방법에 관한 것으로, CoMP 통신 기술의 CB(Coordinated Beamforming)방식에 다양한 스케줄링 및 프리코딩 기술을 적용하며, 스케줄링 기술로 CS 기법, 프리코딩 기술로 QR, THP, PD, SVD 기법 중 하나의 기법을 적용하고, 이에 대한 성능을 매크로셀만 존재하는 경우 또는 매크로셀의 가장자리에 피코셀이 존재할 경우에 대하여 비교 분석함으로써, 보다 향상된 이득을 가짐을 확인할 수 있는 것을 특징으로 한다.

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Номер записи: 4
26-03-2018 дата публикации

차량 통신 성능 향상을 위한 적응적 전송 방법 및 장치

Номер: KR0101841709B1
Автор: 문상미, 추명훈, 이지혜, 권순호, 황인태
Принадлежит: 전남대학교 산학협력단

... 본 발명은 차량 통신 시스템을 위한 적응적 전송 방법에 관한 것으로서, LTE기반 V2X 시스템에서 차량 통신을 위해 시간 및 주파수 영역에서 랜덤하게 자원을 할당하고 전송 확률에 따라 메시지 전송을 결정하는 것으로, 차량 사이의 간섭을 감소시킴으로써 PRR의 CDF(Cumulative Distribution Function) 및 평균 PRR이 향상되는 효과가 있다.

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Номер записи: 5
08-07-2015 дата публикации

APPARATUS AND METHOD FOR CONTROLLING INTER-CELL INTERFERENCE BASED ON COORDINATED MULTI-POINT COMMUNICATION IN MACRO-FEMTOCELL HETEROGENEOUS NETWORK

Номер: KR1020150077919A
Автор: KIM, BO RA, MOON, SANG MI, SARANSH MALIK, HWANG, IN TAE, LEE, CHIL WOO
Принадлежит:

The present invention relates to an apparatus and a method for controlling inter-cell interference based on coordinated multi-point (CoMP) communication in a macro-femtocell heterogeneous network. According to the present invention, the apparatus sorts all user terminals, existing in a cell, into CCU and CEU, compares priorities, and then executes scheduling. The apparatus controls power with respect to all user terminals using a macrocell and a femtocell and can reduce influence of interference by the femtocell. COPYRIGHT KIPO 2015 (AA) Start (BB) End (S600) Verify the macrocell user in femtocell change (S603) Guarantee the minimum SINR of a femtocell user (S607) Guarantee the minimum SINR of a macrocell user ...

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Номер записи: 6
19-06-2014 дата публикации

METHOD OF MEASURING POSITION OF TERMINAL BY USING TAG AND TERMINAL

Номер: WO2014092302A1
Автор: HWANG, Intae, KIM, Bora, MOON, Sangmi, MALIK, Saransh, LEE, Chilwoo, KIM, Seungkyu
Принадлежит:

The present invention relates to a method of measuring the position of a terminal by using a tag and a terminal. A first terminal reads a tag of which the position is fixed, to measure a first position, and continues to sense a position change by using a sensor to measure a second position that is changed. Then, when a first terminal or a second terminal performs wireless communication therebetween, the intensity of communication power is changed step by step to measure the intensity of minimum power at which communication may be performed. Thus, the first terminal or the second terminal measures the third position of the second terminal in consideration of a communication range according to the intensity of a corresponding minimum power based on the second position, so that it is possible to accurately recognize the position of a terminal.

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Номер записи: 7
23-08-2018 дата публикации

CHANNEL ESTIMATION METHOD IN LTE-BASED SIDELINK SYSTEM, AND APPARATUS THEREFOR

Номер: KR1020180094160A
Автор: CHU, MYEONG HUN, MOON, SANG MI, KWON, SOON HO, LEE, JI HYE, BAE, SA RA, HWANG, IN TAE
Принадлежит:

The present invention relates to a channel estimation method, and more particularly, to a channel estimation method in an LTE-based sidelink system, capable of estimating a channel using an LMMSE in a pilot symbol and performing channel interpolation in a smoothing scheme in a data symbol to confirm a response for the entire channel frequency, and to an apparatus therefor. To this end, according to an embodiment of the present invention, the channel estimation method in an LTE-based sidelink system, comprises the steps of: receiving, by a receiver, a signal including a data symbol and pilot symbols from a transmitter; estimating an initial linear minimum mean square error (LMMSE) channel using the pilot symbols; calculating an equalized symbol by applying an equalizer coefficient calculated based on an estimated initial LMMSE channel value to the data symbol; interpolating a channel of a frequency domain region estimated based on the calculated equalized symbol to calculate an interpolated ...

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Номер записи: 8
07-07-2017 дата публикации

METHOD AND DEVICE FOR MANAGING INTERFERENCE BETWEEN SMALL CELL BASE STATIONS

Номер: KR101754797B1
Автор: MOON, SANG MI, CHU, MYEONG HUN, LEE, JI HYE, KWON, SOON HO, HWANG, IN TAE
Принадлежит: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

The present invention relates to a wireless communications technique. More specifically, the present invention relates to a method and a device for reducing interference between small cell base stations by using clustering, signal transmission time zone setting, and electricity control to satisfy QoS/QoE of a user. The wireless method comprises the steps of: collecting reference signal received power (RSRP) values of a first small cell base station and one or more other small cell base stations measured by a first user terminal; classifying a second small cell base station to be included in the same cluster as the first small cell base station from the one or more other small cell base stations on the basis of the RSRP values; setting a time zone for transmitting signals respectively with respect to the first small cell base station and the second small cell base station; and performing electricity control on the basis of a pathway loss value between the first small cell base station or ...

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Номер записи: 9
23-08-2018 дата публикации

LTE-BASED CHANNEL ESTIMATION METHOD AND APPARATUS FOR SAME

Номер: KR1020180094191A
Автор: CHU, MYEONG HUN, MOON, SANG MI, KWON, SOON HO, LEE, JI HYE, HWANG, IN TAE
Принадлежит:

The present invention relates to a channel estimation method and, more specifically, to an LTE-based channel estimation method and an apparatus for the same which use a data signal like a pilot signal to estimate a channel, and apply a smoothing technique to reduce a maximum value by a data determination error. According to an embodiment of the present invention, the LTE-based channel estimation method comprises: a step of a receiver receiving a signal including a data symbol and pilot symbols from a transmitter; a step of using the data symbol to calculate an equalized symbol; a step of demapping the calculated equalized symbol to estimate a channel; a step of using the estimated channel to calculate a channel in a frequency domain; a step of using the calculated channel in the frequency domain to perform an interpolation process; and a step of using the channel on which the interpolation process is performed to check an overall channel frequency response. COPYRIGHT KIPO 2018 (AA) Signal ...

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Номер записи: 10
12-06-2014 дата публикации

MACHINE-TO-MACHINE COMMUNICATION SYSTEM USING SNS, MACHINE-TO-MACHINE COMMUNICATION METHOD, AND MACHINE-TO-MACHINE COMMUNICATION SERVER THEREFOR

Номер: WO2014088146A1
Автор: MALIK, Saransh, KIM, Bora, MOON, Sangmi, HWANG, Intae, KIM, Seungkyu, LEE, Chilwoo
Принадлежит:

The present invention relates to a machine-to-machine communication system using a social network service (SNS), a machine-to-machine communication method, and a machine-to-machine communication server, wherein when the machine-to-machine communication server receives control information from a second machine-to-machine communication device which has received the control information of a first machine-to-machine communication device through an SNS interface, the machine-to-machine communication server converts the control information into a command recognizable by the first machine-to-machine communication device and transmits the command to the first machine-to-machine communication server such that the second machine-to-machine communication device can receive information corresponding to the command, thereby enabling a user, which is a person, to communicate with a machine-to-machine communication device by using an interface of an SNS familiar to the user and to easily control the machine-to-machine ...

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Номер записи: 11
10-01-2019 дата публикации

고속 링크 적응을 위한 채널 보간 및 예측 방법, 그리고 이를 위한 장치

Номер: KR1020190003903A
Автор: 추명훈, 문상미, 권순호, 이지혜, 배사라, 황인태
Принадлежит:

... 본 발명은 채널 보간 및 예측 방법에 관한 것으로, 더욱 상세하게는 파일럿 심볼 위치에서 추정한 채널을 이용하여 정규 직교 기저를 산출하고, 산출된 정규 직교 기저를 이용하여 상관 행렬을 구성한 후 구성된 상관 행렬을 이용하여 채널 보간 및 예측을 수행할 수 있는 고속 링크 적응을 위한 채널 보간 및 예측 방법, 그리고 이를 위한 장치에 관한 것이다. 이를 위한 본 발명의 일 실시 예에 따른 고속 링크 적응을 위한 채널 보간 및 예측 방법은 기지국이 사용자 장치로부터 복조 기준 신호를 수신하는 단계 및 상기 수신된 복조 기준 신호의 파일럿 심볼 위치에서 추정된 채널 벡터를 이용하여 채널 보간 및 예측을 수행하는 단계를 포함하여 이뤄질 수 있다.

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Номер записи: 12
24-11-2017 дата публикации

사이드링크 시스템에서 셀간 간섭을 억제 및 제거할 수 있는 수신기 및 그 수신기에서의 셀간 간섭을 억제 및 제거하는 방법

Номер: KR0101800760B1
Автор: 문상미, 최훈, 추명훈, 황인태
Принадлежит: 전남대학교 산학협력단

... 본 발명은 사이드링크 시스템에서 셀간 간섭을 억제 및 제거할 수 있는 수신기 및 그 수신기에서의 셀간 간섭을 억제 및 제거하는 방법에 관한 것으로서, 더욱 상세하게는 사이드링크 시스템에서 수신되는 신호에 대해 IRC(Interference Rejection Combining)와 SIC(Successive Interference Cancellation)를 결합하여 사이드링크 시스템에서 셀간 간섭을 보다 효율적으로 억제 및 제거할 수 있는 사이드링크 시스템에서 셀간 간섭을 억제 및 제거할 수 있는 수신기 및 그 수신기에서의 셀간 간섭을 억제 및 제거하는 방법에 관한 것이다.

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Номер записи: 13
19-09-2018 дата публикации

연판정 기반 수신기 및 그 수신기에서의 연판정 기반 셀간 간섭을 억제 및 제거하는 방법

Номер: KR0101900327B1
Автор: 문상미, 최훈, 추명훈, 황인태
Принадлежит: 전남대학교산학협력단

... 본 발명은 연판정 기반 수신기 및 그 수신기에서의 연판정 기반 셀간 간섭을 억제 및 제거하는 방법에 관한 것으로서, 더욱 상세하게는 연판정 방식에 따라 복호를 수행함으로써 셀간 간섭을 억제 및 제거할 수 있는 연판정 기반 수신기 및 그 수신기에서의 연판정 기반 셀간 간섭을 억제 및 제거하는 방법에 관한 것이다.

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Номер записи: 14
19-01-2016 дата публикации

DISTRIBUTED ANTENNA SYSTEM CONSIDERING FREQUENCY REUSE AND ADAPTIVE COOPERATIVE TRANSMISSION METHOD THEREIN

Номер: KR101586236B1
Автор: HWANG, IN TAE, LEE, CHIL WOO, MOON, SANG MI, KIM, BO RA, SARANSH MALIK
Принадлежит: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

The present invention relates to a distributed antenna system considering frequency reuse, and an adaptive cooperate transmission method therein. The distributed antenna system considering frequency reuse comprises: a base station (eNB) for using the whole frequency band; at least two small base stations (RRH) wherein the two small base stations use the same frequency band; and a user terminal for controlling interference through frequency reuse. COPYRIGHT KIPO 2016 ...

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Номер записи: 15
10-03-2016 дата публикации

HYBRID RECEIVER FOR CONTROLLING INTERFERENCE BETWEEN CELLS IN SIDEHAUL SYSTEM, AND METHOD FOR CONTROLLING INTERFERENCE BETWEEN CELLS IN HYBRID RECEIVER

Номер: KR101601922B1
Автор: MOON, SANG MI, KIM, BO RA, SARANSH MALIK, HWANG, IN TAE, LEE, CHIL WOO
Принадлежит: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

The present invention relates to a hybrid receiver for controlling interference between cells in a sidehaul system, and a method for controlling interference between cells in the hybrid receiver. The method comprises the following steps of: calculating a signal-to-interference ratio (SIR) of a signal received by a hybrid receiver; detecting a magnetic signal through a successive interference cancellation (SIC) decoding method after detecting the magnetic signal through an interference rejection combining (IRC) decoding method when a calculated SIR value exceeds 0; detecting the magnetic signal through the IRC decoding method when the calculated SIR value is equivalent to or less than 0; detecting an interference signal through the SIC decoding method; and finally detecting the magnetic signal through the SIC decoding method so as to remove the detected interference signal from received signals. COPYRIGHT KIPO 2016 (AA) Start (BB) Finish (S500) Receive a signal (S502) Calculate SIR of the ...

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Номер записи: 16
23-12-2015 дата публикации

APPARATUS FOR PROVIDING DISCRETE FOURIER TRANSFORM-BASED CHANNEL ESTIMATION FOR SIDEHAUL

Номер: KR1020150142770A
Автор: HWANG, IN TAE, LEE, CHIL WOO, MOON, SANG MI, KIM, BO RA, SARANSH MALIK
Принадлежит:

The present invention relates to an apparatus for discrete Fourier transform (DFT)-based channel estimation for a sidehaul. The apparatus for channel estimation according to the present invention comprises: a transmission unit performing a pre-processing operation for an input signal, using a reference signal to perform resource element mapping before the input signal passes through a single carrier-frequency division multiple access (SC-FDMA) signal generator, and then transmitting the input signal via at least one antenna after the input signal passes through the SC-FDMA signal generator; and a reception unit performing SC-FDMA demodulation for the received signal, using a reference signal to perform a DFT-based channel estimation, and then compensating for the channel through a channel equalizer, thereby improving performance in light of a normalized mean square error (DFT), an error rate and a transmission rate. COPYRIGHT KIPO 2016 (20) Channel Estimation (21) Advanced Receiver (22- ...

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Номер записи: 17
31-01-2019 дата публикации

차량 간 통신에서 채널 추정을 위한 방법 및 이를 위한 장치

Номер: KR0101943983B1
Автор: 이지혜, 문상미, 권순호, 추명훈, 배사라, 황인태
Принадлежит: 전남대학교산학협력단

... 본 발명은 차량 간 통신에서 채널 추정 방법에 관한 것으로서, 파일럿 심볼에서 QS(Quadratic Smoothing) 기법으로 초기 채널 추정을 수행하고, 데이터 심볼에서 평활화(Smoothing) 및 간섭 제거 기법으로 채널을 추정한다. 본 발명은 종래의 채널 추정 방법에 비하여, QS 기법 적용에 따라 주파수 선택적 페이딩 영향을 낮추고, Smoothing 기법을 적용하여 데이터 결정 오류를 줄이며, Sliding Averaging 기법을 통해 인접 부반송파의 간섭을 제거하여 보다 신뢰성 있는 채널 추정을 수행할 수 있다.

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Номер записи: 18
03-09-2015 дата публикации

Apparatus And Method For Controlling Inter-Cell Interference Based on Coordinated Multi-Point in Macro-Femtocell Heterogeneous Network

Номер: KR0101549503B1
Автор: 김보라, 문상미, 사란쉬 말리크, 황인태, 이칠우
Принадлежит: 전남대학교산학협력단

... 본 발명은 이종 네트워크에서 다중 포인트 협력 통신(CoMP: Coordinated Multi-Point) 기반의 셀 간 간섭 제어를 위한 장치 및 방법에 관한 것으로, 본 발명에 따른 셀 간 간섭 제어를 위한 장치는 한 셀에 존재하는 모든 사용자 단말에 대하여 CCU와 CEU로 구분하여 우선순위를 비교함으로써 스케줄링을 수행하고, 매크로셀 및 펨토셀 전체 사용자 단말에 대하여 전력 제어를 적용하는 것을 특징으로 하고, 이를 통해 펨토셀로부터 간섭의 영향을 줄일 수 있도록 하는 것을 특징으로 한다.

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Номер записи: 19
22-03-2018 дата публикации

METHOD AND APPARATUS FOR ADAPTIVELY TRANSMITTING TO IMPROVE PERFORMANCE OF VEHICLE COMMUNICATION

Номер: KR1020180030337A
Автор: MOON, SANG MI, CHU, MYEONG HUN, LEE, JI HYE, KWON, SOON HO, HWANG, IN TAE
Принадлежит:

The present invention relates to an adaptive transmission method for a vehicle communication system. The method randomly allocates a resource in time and frequency domains, and determines message transmission according to a transmission possibility for vehicle communication in an LTE-based V2X system, thereby reducing interference between vehicles. Therefore, a cumulative distribution function (CDF) of a packet reception ratio (PRR) and the average PRR are improved. COPYRIGHT KIPO 2018 (110) Control part (120) Communication part (130) Message generation part (140) Storage part ...

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Номер записи: 20
07-07-2017 дата публикации

RECEIVER CAPABLE OF RESTRAINING AND REMOVING INTER-CELL INTERFERENCE IN SIDELINK SYSTEM, AND METHOD OF RESTRAINING AND REMOVING INTER-CELL INTERFERENCE IN RECEIVER

Номер: KR1020170077883A
Автор: MOON, SANG MI, CHOE, HUN, CHU, MYEONG HUN, HWANG, IN TAE
Принадлежит:

The present invention relates to a receiver capable of restraining and removing the inter-cell interference in a sidelink system, and a method of restraining and removing inter-cell interference in the receiver. More specifically, the present invention is capable of more efficiently restraining and removing the inter-cell interference in the sidelink system by coupling interference rejection combining (IRC) and successive interference cancellation (SIC) with respect to a signal received from the sidelink system. To achieve this, the present invention includes a signal receiver and a signal processor. COPYRIGHT KIPO 2017 (AA) Start (BB) End (S500) Receive a signal (S502) Calculate SIR of the received signal (S506) Detect a magnetic signal through IRC (S508) Detect an interference signal through SIC (S510) Detect a magnetic signal through SIC (S512) Detect an interference signal through IRC ...

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Номер записи: 21
18-01-2021 дата публикации

DEEP LEARNING-BASED BEAMFORMING COMMUNICATION SYSTEM AND METHOD

Номер: KR102204783B1
Автор: SANGMI MOON, HYEONSUNG KIM, INTAE HWANG
Принадлежит: UNIV NAT CHONNAM IND FOUND, INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

The present invention relates to a system and a method for deep learning-based beamforming communication performed in an indoor environment using millimeter wave communication. According to the present invention, a fingerprinting DB is built by receiving location information and reference signal reception power by user terminal location from each user terminal in response to a reference signal transmitted from a base station to at least one user terminal. In addition, an obstacle model is built based on the reference signal reception power for each obstacle between the user terminal and the base station and user model based on the reference signal reception power by user terminal location in the built fingerprinting data. The location information and data traffic are received from the at least one user terminal, the beam index of the user terminal corresponding to the received data traffic is derived from a deep neural network, a communication channel between the user and the base station ...

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Номер записи: 22
31-01-2019 дата публикации

LTE 기반 채널 추정 방법 및 이를 위한 장치

Номер: KR0101943985B1
Автор: 추명훈, 문상미, 권순호, 이지혜, 황인태
Принадлежит: 전남대학교산학협력단

... 본 발명은 채널 추정 방법에 관한 것으로, 더욱 상세하게는 데이터 신호를 파일럿 신호처럼 사용하여 채널을 추정하고, 평활화 기법을 적용하여 데이터 결정 오류에 의한 최대값을 줄여줄 수 있는 LTE 기반 채널 추정 방법 및 이를 위한 장치에 관한 것이다. 이를 위한 본 발명의 일 실시 예에 따른 LTE 기반 채널 추정 방법은 수신기가 송신기로부터 데이터 심볼 및 파일럿 심볼들을 포함하는 신호를 수신하는 단계, 상기 데이터 심볼을 이용하여 등화된 심볼을 산출하는 단계, 상기 산출된 등화된 심볼을 디매핑하여 채널을 추정하는 단계, 상기 추정된 채널을 이용하여 주파수 도메인 영역에서의 채널을 산출하는 단계, 상기 산출된 주파수 영역의 채널을 이용하여 보간 과정을 수행하는 단계 및 상기 보간 과정이 수행된 채널을 이용하여 전체 채널 주파수 응답을 확인하는 단계를 포함하여 이뤄질 수 있다.

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Номер записи: 23
22-01-2019 дата публикации

채널 추정 방법 및 이를 위한 장치

Номер: KR0101940749B1
Автор: 이지혜, 문상미, 권순호, 추명훈, 배사라, 황인태
Принадлежит: 전남대학교산학협력단

... 본 발명은 채널 추정 방법에 관한 것으로, 더욱 상세하게는 파일럿 심볼에서는 QS(Quadratic Smoothing) 채널 추정을 수행하고 데이터 심볼에서는 평활화 채널 추정을 수행함으로써, 주파수 선택적 페이딩의 영향을 감소시킴과 동시에 데이터 결정 오류를 줄여 더욱 정확하게 채널을 추정할 수 있는 채널 추정 방법 및 이를 위한 장치에 관한 것이다. 이를 위한 본 발명의 일 실시 예에 따른 채널 추정 방법은 수신기가, 신호가 수신되면, 파일럿 심볼을 이용하여 QS(Quadratic Smoothing) 채널 추정을 수행하는 단계, 상기 QS 채널 추정을 통해 추정된 채널 추정 값을 이용하여 데이터 심볼에 대한 등화 및 디맵핑을 수행하는 단계 및 상기 데이터 심볼에 대한 평활화(Smoothing) 채널 추정을 수행하는 단계를 포함하여 이뤄질 수 있다.

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Номер записи: 24
12-11-2018 дата публикации

METHOD FOR ESTIMATING CHANNEL IN V2V COMMUNICATION AND DEVICE THEREFOR

Номер: KR101917351B1
Автор: LEE, JI HYE, MOON, SANG MI, KWON, SOON HO, CHU, MYEONG HUN, BAE, SA RA, HWANG, IN TAE
Принадлежит: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

The present invention relates to a method for estimating a channel in a vehicle to vehicle (V2V) communication. Initial channel estimation is performed by a smoothing method in a pilot symbol and channel estimation is also performed by the smoothing method in a data symbol. The present invention reduces a data determination error by applying the smoothing method to both the pilot symbol and the data symbol compared to a conventional channel estimation method, thereby performing more reliable channel estimation. COPYRIGHT KIPO 2018 (S60) Initial channel estimation (smoothing in time) (S61) Initial channel estimation (smoothing in frequency) (S62) Equalization (S63) Demapping ...

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Номер записи: 25
28-12-2017 дата публикации

SOFT-DECISION BASED RECEIVER AND METHOD FOR SUPPRESSING AND REMOVING INTERFERENCE BETWEEN SOFT-DECISION BASED CELLS IN RECEIVER

Номер: KR1020170142966A
Автор: SANGMI MOON, HUN CHOE, MYEONGHUN CHU, INTAE HWANG
Принадлежит:

The present invention relates to a soft-decision based receiver and a method for suppressing and removing interference between soft-decision based cells in the receiver. More specifically, the present invention relates to a soft-decision based receiver and a method for suppressing and removing interference between soft-decision based cells in the receiver, which perform decoding according to a soft-decision method to suppress and remove the interference between the cells. The soft-decision based receiver comprises: a signal receiving part receiving a signal; and a signal processing part, after checking an operation method of the signal receiving part from the signal received through the signal receiving part, applying a minimum mean square error (MMSE) weight matrix in the case of a successive interference cancellation (SIC) receiver, removing an inconvenience estimation value of a calculated transmission signal by applying an IRC weight matrix in the case of a full suppression and cancellation ...

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Номер записи: 26
31-01-2019 дата публикации

LTE 기반 사이드링크 시스템에서의 채널 추정 방법 및 이를 위한 장치

Номер: KR0101943984B1
Автор: 추명훈, 문상미, 권순호, 이지혜, 배사라, 황인태
Принадлежит: 전남대학교산학협력단

... 본 발명은 채널 추정 방법에 관한 것으로, 더욱 상세하게는 파일럿 심볼에서는 LMMSE를 이용하여 채널 추정을 하고, 데이터 심볼에서는 Smoothing 방식으로 채널 보간을 수행하여 전체 채널 주파수 응답을 확인할 수 있는 LTE 기반 사이드링크 시스템에서의 채널 추정 방법 및 이를 위한 장치에 관한 것이다. 이를 위한 본 발명의 일 실시 예에 따른 LTE 기반 사이드링크 시스템에서의 채널 추정 방법은 수신기가 송신기로부터 데이터 심볼 및 파일럿 심볼들을 포함하는 신호를 수신하는 단계, 상기 파일럿 심볼을 이용하여 초기 LMMSE(Linear Minimum Mean Square Error) 채널을 추정하는 단계, 상기 초기 LMMSE 채널 추정된 값을 기반으로 산출된 등화기 계수를 상기 데이터 심볼에 적용하여 등화된 심볼을 산출하는 단계, 상기 산출된 등화된 심볼을 기반으로 추정된 주파수 도메인 영역의 채널을 보간하여 보간된 채널을 산출하는 단계 및 상기 보간된 채널을 이용하여 시간 도메인 영역 및 주파수 도메인 영역의 평균을 산출하여 전체 채널 주파수 응답을 확인하는 단계를 포함하여 이뤄질 수 있다.

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Номер записи: 27
29-01-2018 дата публикации

USER OFFLOADING METHOD IN SMALL CELL CLUSTER AND USER OFFLOADING APPARATUS SUPPORTING SAME

Номер: KR1020180009418A
Автор: MOON, SANG MI, CHU, MYEONG HUN, LEE, JI HYE, KWON, SOON HO, HWANG, IN TAE
Принадлежит:

The present invention relates to a user offloading method and, more specifically, to a method for more efficiently performing user offloading within a cluster where small cells are concentrated. The present invention relates to a user offloading method in a small cell cluster and a user offloading support apparatus supporting the same, which forms the small cell cluster by comparing reference signal received power (RSRP) received from a terminal and can apply the user offloading while considering the number of small cell users and an interference situation within the formed cluster. To this end, the user offloading method in the small cell cluster according to an embodiment of the present invention comprises steps of: forming at least one cluster by using the RSRP with respect to a plurality of small cells; determining user terminals to be offloaded in each of the small cells while considering the number of users and the interference situation with respect to each of the small cells within ...

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Номер записи: 28
07-07-2017 дата публикации

SOFT-DECISION-BASED RECEIVER AND METHOD FOR SUPPRESSING AND ELIMINATING SOFT-DECISION-BASED INTER-CELL INTERFERENCE IN RECEIVER THEREOF

Номер: KR1020170077881A
Автор: MOON, SANG MI, CHOE, HUN, CHU, MYEONG HUN, HWANG, IN TAE
Принадлежит:

The present invention relates to a soft-decision-based receiver and a method for suppressing and eliminating soft-decision-based inter-cell interference in a receiver thereof. More specifically, the present invention relates to a soft-decision-based receiver and a method for suppressing and eliminating soft-decision based inter-cell interference in the receiver by performing decoding according to a soft-decision method. COPYRIGHT KIPO 2017 (251) Receiver (252) Demodulation unit (253) Deinterleaver (254) Interleaver (255) Channel decoder ...

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Номер записи: 29