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公开(公告)号：KR1020080109201A
公开(公告)日：2008-12-17
申请号：KR1020070057243
申请日：2007-06-12
CPC classification number: H04L25/03012 , H04L1/0631 , H04L1/0668 , H04L25/0204 , H04L25/0242 , H04L25/0246 , H04L25/067
Abstract: An apparatus for detecting signal using maximum likelihood scheme and method thereof are provided to reduce operation quantity of a LLR(Log Likelihood Ratio) value by providing a simplified ML(Maximum Likelihood) detection method. A method for detecting signal using maximum likelihood scheme comprises the following steps: a step for estimating a channel and detecting symbols corresponding to the number of antenna of a sending terminal and a modulation system(302, 304); a step for determining a equivalence channel matrix corresponding to an estimated channel; a step for determining a substitution equivalence channel matrix by multiplying a predetermined substitution matrix in the equivalence channel matrix(306); a step for performing QR decomposition about the substitution equivalence channel matrix(308); and a step for determining a log likelihood ratio value from a receiving signal vector according to the QR decomposition.
Abstract translation: 提供了使用最大似然方案检测信号的装置及其方法，以通过提供简化的ML（最大似然）检测方法来减少LLR（对数似然比）值的操作量。 使用最大似然方案检测信号的方法包括以下步骤：用于估计信道并检测与发送终端和调制系统的天线数量相对应的符号的步骤（302,304）; 用于确定与所估计的信道相对应的等价信道矩阵的步骤; 通过将等效信道矩阵（306）中的预定替换矩阵相乘来确定替换等价信道矩阵的步骤; 对替代等价信道矩阵（308）进行QR分解的步骤; 以及根据QR分解从接收信号矢量确定对数似然比值的步骤。
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公开(公告)号：KR101369593B1
公开(公告)日：2014-03-05
申请号：KR1020070096668
申请日：2007-09-21
IPC: H04B7/04
Abstract: 본 발명은, 통신 시스템에서 데이터를 송신하는 장치에 있어서, 직렬 형태로 입력되는 데이터 심볼을 병렬 형태의 데이터 심볼로 변환하는 직병렬 변환기와, 상기 병렬 형태의 데이터 심볼과 채널 상태에 상응하여 결정된 가변 회전 행렬과의 연산을 통해 FDFR(Full Diversity Full Rate) 코드 행렬을 생성하는 가변 회전 행렬 연산기와, 상기 생성한 FDFR 코드 행렬에 빔포밍 행렬 연산을 수행하고 수신단으로 상기 빔포밍 행렬 연산을 수행한 데이터 심볼을 송신하는 빔포밍 연산기를 포함한다.
MIMO, 전송률, 다이버시티, 회전 행렬, FDFR.-
公开(公告)号：KR1020090030941A
公开(公告)日：2009-03-25
申请号：KR1020070096668
申请日：2007-09-21
IPC: H04B7/04
CPC classification number: H04B7/0617 , H04B7/0456
Abstract: A data transmitting/receiving apparatus and a method thereof for satisfying FDFR in a communications system are provided to improve the performance of a system and reduce the transmission delay of data by generating FDFR code matrix in a transmission terminal. A serial/parallel converter(210) converts a data symbol inputted by a serial type into data symbol of the parallel configuration. A variable rotation matrix operator(220) produces FDFR(Full Diversity Full Rate) code matrix through the calculation of the variable rotation matrix corresponding to data symbol and channel condition of the parallel configuration. A beam forming operator(230) performs the beam forming matrix operation in the FDFR code matrix produced. And the beam forming operator transmits the data symbol performing the beam forming matrix operation to the reception end.
Abstract translation: 提供一种用于在通信系统中满足FDFR的数据发送/接收装置及其方法，以通过在发送终端中生成FDFR码矩阵来降低系统的性能并减少数据的传输延迟。 串行/并行转换器（210）将由串行类型输入的数据符号转换为并行配置的数据符号。 可变旋转矩阵运算符（220）通过计算对应于并行配置的数据符号和信道条件的可变旋转矩阵来产生FDFR（全分集全速率）码矩阵。 波束形成算子（230）在所生成的FDFR码矩阵中执行波束形成矩阵运算。 并且波束形成算子将执行波束形成矩阵运算的数据符号发送到接收端。
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公开(公告)号：KR1020080034050A
公开(公告)日：2008-04-18
申请号：KR1020060099327
申请日：2006-10-12
CPC classification number: H04L1/0045 , H04L1/0656
Abstract: An apparatus and a method for detecting a signal in a communication system using a multi-antenna are provided to estimate a reception signal by considerably reducing the amount of calculation compared with estimation of a reception signal by using an existing QRD(QR Decomposition)-based M algorithm. A receiving end generates a tree structure(502), and determines the first threshold value(504). The receiving end removes a branch with a metric value smaller than the first threshold value(506) and extends each survived candidate symbol as candidate symbols by the number corresponding to a modulation order(508). The receiving end determines a candidate symbol having a minimum accumulated branch metric value as a reception symbol(512), and extends the determined candidate symbol by the number corresponding to the modulation order(514). The receiving end determines a minimum accumulated branch metric value, among the extended candidate symbols, as the second threshold value(516). The receiving end excludes a candidate symbol having a value larger than the second threshold value, among the M number of candidate symbols(518), and extends the surviving candidate symbols by the number corresponding to a modulation order(520). The receiving end determines a candidate symbol corresponding to a minimum accumulated branch metric value as a reception symbol at the third stage(522).
Abstract translation: 提供一种用于使用多天线的通信系统中的信号检测的装置和方法，用于通过使用现有的QRD（QR分解）为基础大大减少与接收信号的估计相比计算量的接收信号 M算法。 接收端生成树结构（502），并确定第一阈值（504）。 接收端删除具有小于第一阈值（506）的度量值的分支，并且将每个存活的候选符号作为候选符号延伸与调制阶数相对应的数目（508）。 接收端确定具有最小累积分支度量值的候选符号作为接收符号（512），并且将所确定的候选符号扩展为与调制阶数相对应的数字（514）。 接收端确定扩展候选符号之中的最小累积分支量度值作为第二阈值（516）。 在M个候选符号（518）中，接收端排除具有大于第二阈值的候选符号，并将剩余候选符号扩展为与调制阶数相对应的数字（520）。 接收端在第三级（522）确定对应于最小累积分支度量值的候选符号作为接收符号。
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