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公开(公告)号：KR1020090020247A
公开(公告)日：2009-02-26
申请号：KR1020070084846
申请日：2007-08-23
CPC classification number: H04L25/03318 , H04L25/0204 , H04L25/0246 , H04L25/067
Abstract: A log likelihood ratio calculating method, a transmission signal detecting method and a receiver are provided to detect a transmission signal by using the log likelihood ratio calculating method which has lower complexity and excellent performance in an MIMO(Multiple Input Multiple Output) system using the SM(Spatial Multiplexing) method. A signal processing unit(110) performs the scrambling, error correcting coding and interleaving for transmission data, and then outputs the processed data. A symbol mapping unit(120) converts the transmission data signal-processed by the signal processing unit into high-speed symbols, and then outputs the converted results. A de-multiplexer(130) divides the high-speed symbols into four low-speed layers, outputs the divided results, and then transmits the four outputted low-speed layers through each transmission antenna, at the same time. A channel estimating and layer sorting unit(210) perform the channel estimation and re-arranges/outputs layers and channels. A candidate group setting unit(220) determines transmission symbol candidate vectors by using the re-arranged layers and channels. An LLR calculation unit(230) produces soft decision values of each bit of a plurality of layers. A multiplexer(240) and signal processing unit(250) perform the inverse functions of the de-multiplexer and signal processing unit of a transmitter(100), execute the channel decoding by using the produced soft decision values, and then detect transmission signals.
Abstract translation: 提供对数似然比计算方法，传输信号检测方法和接收机，通过使用在使用SM的MIMO（多输入多输出）系统中具有较低复杂度和优异性能的对数似然比计算方法来检测传输信号 （空间复用）方法。 信号处理单元（110）对发送数据进行加扰，纠错编码和交织，然后输出处理后的数据。 符号映射单元（120）将由信号处理单元进行了信号处理的发送数据转换为高速符号，然后输出转换结果。 解复用器（130）将高速符号划分为四个低速层，输出分割结果，然后同时通过每个发送天线发送四个输出的低速层。 信道估计和层分类单元（210）执行信道估计并重新布置/输出层和信道。 候选组设定单元（220）通过使用重新布置的层和信道来确定发送符号候选向量。 LLR计算单元（230）产生多个层的每个比特的软判决值。 复用器（240）和信号处理单元（250）执行发射机（100）的解复用器和信号处理单元的反向功能，通过使用所产生的软判决值来执行信道解码，然后检测传输信号。
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公开(公告)号：KR1020080051992A
公开(公告)日：2008-06-11
申请号：KR1020060123915
申请日：2006-12-07
CPC classification number: H04L25/03242 , H04L1/0631
Abstract: A method for detecting a space-time code in a mobile communication system is provided to detect a space-time code B for plural transmission antennas using a newly defined ML matrix and perform two dependent sphere decoding of the newly defined ML matrix, thereby reducing the amount of matrix operation. A method for detecting a space-time code in a mobile communication system comprises the following steps of: receiving signals from the nr number of receiving antennas; determining whether channels from transmission antennas 3,4 are better than the conditions of channels from transmission antennas 1,2; performing Cholesky decomposition for acquiring the F of an ML(Maximum Likelihood) matrix generated for performing sphere decoding; detecting x3 and x4 using two dependent sphere decoders; detecting x1 and x2 using a single symbol detection method; performing the Cholesky decomposition when the channels from the transmission antennas 1,2 are better than the conditions of the channels from the transmission antennas 3,4; detecting the x1 and the x2 using the two sphere decoders previously; detecting the x3 and the x4 using the single symbol detection method; and updating the radiuses of the sphere decoders if the x1, the x2, the x3, and the x4 are all detected.
Abstract translation: 提供了一种用于检测移动通信系统中的时空码的方法，以使用新定义的ML矩阵来检测多个发射天线的时空码B，并对新定义的ML矩阵执行两个依赖球解码，由此减少 矩阵运算量。 一种用于检测移动通信系统中的时空码的方法，包括以下步骤：从nr个接收天线接收信号; 确定来自发射天线3,4的信道是否优于来自发射天线1,2的信道的条件; 执行Cholesky分解以获取用于执行球体解码生成的ML（最大似然）矩阵的F; 使用两个相关球面解码器检测x3和x4; 使用单个符号检测方法检测x1和x2; 当来自发送天线1,2的信道优于来自发送天线3,4的信道的条件时，执行Cholesky分解; 以前使用两个球体解码器检测x1和x2; 使用单符号检测方法检测x3和x4; 并且如果全部检测到x1，x2，x3和x4，则更新球解码器的半径。
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公开(公告)号：KR1020160012951A
公开(公告)日：2016-02-03
申请号：KR1020150104641
申请日：2015-07-23
Applicant: 한국전자통신연구원
Abstract: 인지무선및 다중무선접속시스템에서의단말은복수의주파수대역중 제1 주파수대역으로부터수신신호검출을수행하고, 상기제1 주파수대역으로부터수신신호가존재하는경우에, 상기수신신호를저장하면서상기수신신호의종류를확인하며, 상기복수의주파수대역중 제2 주파수대역으로부터수신신호검출을수행한다. 그리고상기수신신호의종류를확인하는동시에상기복수의주파수대역중 제2 주파수대역에대해수신신호검출을수행한다.
Abstract translation: 根据本发明，认知无线电和多无线电接入系统中的终端从多个频带检测来自第一频带的接收信号，在接收信号的同时存储接收信号的同时确认接收信号的类型 存在从第一频带，并且从频带检测来自第二频带的接收信号。 此外，终端确认接收信号的类型，并且同时从频带检测相对于第二频带的接收信号。
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15.发明公开다중 편파 안테나를 통해 송수신되는 ＯＦＤＭ 신호의 반송파 주파수 옵셋 측정장치 및 이의 반송파 주파수 옵셋 측정 방법 审中-实审通过偏振天线和载波频率偏移估计的OFDM信号的载波频率估计装置估计
公开(公告)号：KR1020140075095A
公开(公告)日：2014-06-19
申请号：KR1020120142894
申请日：2012-12-10
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04L7/0016 , H04B7/10 , H04L27/2613 , H04L27/2657 , H04L27/2675 , H04L27/2688 , H04L27/2691 , H04L2027/0026
Abstract: The present invention relates to an apparatus for measuring the carrier frequency offset of OFDM signals transmitted and received through a plurality of multi-polarized antennas and a method for measuring the carrier frequency offset thereof, which accurately measure the carrier frequency offset used for carrier frequency synchronization acquisition when there is interference between polarized waves.
Abstract translation: 本发明涉及一种用于测量通过多个多极化天线发送和接收的OFDM信号的载波频率偏移的装置和用于测量其载波频率偏移的方法，其精确测量用于载波频率同步的载波频率偏移 当极化波之间有干扰时采集。
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Patent Agency Ranking
公开(公告)号：KR1020110067983A
公开(公告)日：2011-06-22
申请号：KR1020090124791
申请日：2009-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04H20/67 , H04L27/2649 , H04L27/2656
Abstract: PURPOSE: A multicast signal demodulation apparatus and method thereof are provided to demodulate a multicast signal which is received from a terminal in order to obtain macro diversity effect. CONSTITUTION: A synchronization module(410) confirms whether a signal that a plurality of base stations transmits is received to a terminal. The synchronization module recognizes the starting time point of the signals that are transmitted to a plurality of base stations. A control module(420) selects a demodulation section based on the starting time of the signals. A demodulation module(430) demodulates a multicast signal which the received signal includes.
Abstract translation: 目的：提供一种组播信号解调装置及其方法，用于解调从终端接收的多播信号，以获得宏分集效果。 构成：同步模块（410）确认多个基站发送的信号是否被接收到终端。 同步模块识别发送到多个基站的信号的起始时间点。 控制模块（420）根据信号的开始时间来选择解调部分。 解调模块（430）解调接收到的信号包括的多播信号。
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公开(公告)号：KR1020110065268A
公开(公告)日：2011-06-15
申请号：KR1020100042097
申请日：2010-05-04
Abstract: PURPOSE: An operating parameter change system of a BS and a method thereof are provided to transmit a communication signal with an MS with a separate arbitrary operating parameter in the handover process of the BS. CONSTITUTION: In case the handover of an MS(Mobile Station) is required, a BS(Base Station) assigns user data(A1,B1) to temporary areas(30,50). The MS receives a service through a first operating parameter. The user data are allocated to the MS. The temporary area receives a service through a temporary operating parameter. In case the handover of the MS is completed, the BS assigns the allocated user data to unicast areas(20,40).
Abstract translation: 目的：提供BS的操作参数改变系统及其方法，以在BS的切换过程中以具有单独的任意操作参数的MS发送通信信号。 规定：在需要MS（移动台）切换的情况下，BS（基站）将用户数据（A1，B1）分配给临时区域（30,50）。 MS通过第一个操作参数接收服务。 用户数据被分配给MS。 临时区域通过临时操作参数接收服务。 在MS的切换完成的情况下，BS将分配的用户数据分配给单播区域（20,40）。
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公开(公告)号：KR1020110063262A
公开(公告)日：2011-06-10
申请号：KR1020100040843
申请日：2010-04-30
Abstract: PURPOSE: A signal detecting device and method thereof using a block data analysis decomposition are provided to conveniently detect an active signal in a poor communication environment which has poor SNR and SINR. CONSTITUTION: An extracting unit(130) extracts a main eigen vector having relatively large eigen value among eigen vectors of matrix. The matrix obtains a matrix decomposition algorithm by applying the algorithm. A correlation value calculation unit(150) calculates correlation between a pre-stored main eigen vector including the characteristic information of a carrier signal and standards matrices.
Abstract translation: 目的：提供使用块数据分析分解的信号检测装置及其方法，以便在差的SNR和SINR的差的通信环境中方便地检测有效信号。 构成：提取单元（130）在矩阵的特征向量中提取具有相对较大特征值的主特征向量。 矩阵通过应用该算法获得矩阵分解算法。 相关值计算单元（150）计算包括载波信号的特征信息和标准矩阵的预存的主要特征矢量之间的相关性。
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公开(公告)号：KR100964037B1
公开(公告)日：2010-06-15
申请号：KR1020070130133
申请日：2007-12-13
Abstract: 무선 통신 시스템의 모뎀을 시험하는 장치는 시뮬레이터 및 시험 보드를 포함한다. 여기서 시뮬레이터는 상기 모뎀을 시험하기 위한 가상 환경을 설정하여, 가상 환경에 따른 적어도 하나의 제어 신호를 생성한다. 그리고 시험 보드는 적어도 하나의 제어 신호에 따라 모뎀이 수신하는 신호 형태의 복수의 제1 수신신호를 모뎀으로 출력하고, 모뎀이 송신하는 신호 형태의 복수의 제1 송신신호를 모뎀으로부터 수신한다. 여기서 복수의 제1 수신신호는 복수의 안테나에 의한 복수의 채널에 각각 대응하는 신호이고, 복수의 제1 송신신호는 복수의 채널에 각각 대응하는 신호이다.
또한, 시험 보드는 무선 신호 처리부를 포함하며, 무선 신호 처리부는 적어도 하나의 제어 신호에 따라, 복수의 안테나가 각각 수신하는 신호 형태의 복수의 제2 수신신호를 복수의 채널로부터 각각 수신하고, 복수의 안테나가 각각 송신하는 신호 형태의 복수의 제2 송신신호를 상기 복수의 채널로 각각 출력한다.
모뎀, 기지국, 단말기, 송신, 수신, 시험장치, 시뮬레이터-
公开(公告)号：KR100940870B1
公开(公告)日：2010-02-09
申请号：KR1020070122770
申请日：2007-11-29
Abstract: 본 발명은 OFDMA(Orthogonal Frequency Division Multiple Access) 시스템에서의 RF(Radio Frequency) 중계기 사용을 위한 동기 확보 방법에 대한 것으로, 기지국으로부터 기지국 신호를 수신하고, 상기 기지국 신호에서 프리앰블을 제거하고, 상기 프리앰블이 제거된 기지국 신호를 상기 단말기로 전송한다.
직교 주파수 분할 다중, RF 중계기, 동기 확보Abstract translation: 提供无线通信系统中的同步方法，以通过使终端与基站同步而不改变终端与基站之间的现有通信规则来操作RF中继。 从基站接收基站信号（S310）。 检测到TTG（发送/接收转换间隙）和RTG（接收/发送转移间隙）（S320）。 从基站信号去除前导码（S330）。 没有前导码的基站信号被发送到终端（S340）。
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