公开(公告)号：US20070092014A1

公开(公告)日：2007-04-26

申请号：US11543492

申请日：2006-10-05

申请人： Jae-Kwon Kim ,  Ye-Hoon Lee ,  Yung-Soo Kim ,  Cheol-Woo You ,  Dong-Ho Kim

发明人： Jae-Kwon Kim ,  Ye-Hoon Lee ,  Yung-Soo Kim ,  Cheol-Woo You ,  Dong-Ho Kim

IPC分类号： H04K1/10

CPC分类号： H04L25/03159 ,  H04L5/023 ,  H04L2025/03414 ,  H04L2025/03445 ,  H04L2025/03522

摘要： Provided is a two-dimensional equalization method in a receiver of a communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme. The receiver sets as a first value a value of a 1-tap frequency domain equalizer (FEQ) corresponding to a sub-channel allocated to the receiver , and sets as a second value a value of a 1-tap FEQ corresponding to sub-channels other than the allocated sub-channel. Upon receipt of a signal, the receiver performs Fast Fourier Transform (FFT) on the received signal, and equalizes the FFT-processed signal according to the values of the 1-tap FEQs.

摘要翻译： 提供了一种使用正交频分多址（OFDMA）方案的通信系统的接收机中的二维均衡方法。 接收机将与分配给接收机的子信道相对应的1抽头频域均衡器（FEQ）的值设为第1值，并将与子信道对应的1抽头FEQ的值设定为第2值 除了分配的子通道。 在接收到信号时，接收机对接收到的信号执行快速傅立叶变换（FFT），并根据1抽头FEQ的值对经FFT处理的信号进行均衡。

公开(公告)号：US20070202889A1

公开(公告)日：2007-08-30

申请号：US11703520

申请日：2007-02-07

申请人： Dong-Ho Kim ,  Cheol-Woo You ,  Yung-Soo Kim ,  Ye-Hoon Lee ,  Keum-Chan Whang ,  Kwang-Soon Kim ,  Hyo-Yol Park

发明人： Dong-Ho Kim ,  Cheol-Woo You ,  Yung-Soo Kim ,  Ye-Hoon Lee ,  Keum-Chan Whang ,  Kwang-Soon Kim ,  Hyo-Yol Park

IPC分类号： H04Q7/20

CPC分类号： H03M13/1185 ,  H03M13/116 ,  H03M13/6362

摘要： Provided is a method for puncturing a Low Density Parity Check (LDPC) code that is expressed in a factor graph configured by a bit node and a check node connected to an edge and is decoded by a parity check matrix with an information region and a parity region. A mother code with a code rate is generated. Bit nodes configuring the parity region are grouped in a block unit. A transmission code rate and the number of bits to be punctured in the mother code according to the transmission code rate are set. A puncturing process in either the block unit or a bit unit or both is performed according to the transmission code rate. All codes with required code rates can be obtained. The LDPC code puncturing method can be flexibly applied to Hybrid Automatic Repeat Request (H-ARQ) and Incremental Redundancy (IR) systems.

摘要翻译： 提供了一种在由比特节点和连接到边缘的校验节点配置的因子图中表示的低密度奇偶校验（LDPC）码的方法，并且由具有信息区域和奇偶校验的奇偶校验矩阵解码 地区。 生成具有码率的母码。 配置奇偶校验区域的位节点以块为单位分组。 设定传输码率和根据传输码率在母码中要穿孔的比特数。 根据传输码率执行块单元或位单元或两者中的删截处理。 可以获得所需的代码率的代码。 LDPC码打孔方法可以灵活地应用于混合自动重传请求（H-ARQ）和增量冗余（IR）系统。

公开(公告)号：US07934138B2

公开(公告)日：2011-04-26

申请号：US11703595

申请日：2007-02-07

申请人： Dong-Ho Kim ,  Cheol-Woo You ,  Yung-Soo Kim ,  Ye-Hoon Lee

发明人： Dong-Ho Kim ,  Cheol-Woo You ,  Yung-Soo Kim ,  Ye-Hoon Lee

IPC分类号： H03M13/00

CPC分类号： H04L1/1819 ,  H04L1/0057 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/1816 ,  H04L1/1887

摘要： A transmission method based on a Hybrid Automatic Repeat Request (HARQ) scheme for in a communication system. A codeword is generated using a Low Density Parity Check (LDPC) code. Parity bits of the codeword are classified on a basis of a transmission priority. Parity bits with an identical transmission priority are grouped. An information bit group of the codeword and parity bit groups with the identical transmission priority are shuffled in a predefined pattern. A packet is generated from the shuffled information bit group and the shuffled parity bit groups based on the transmission priority. The generated packet is retransmitted in response to a retransmission request. The transmission method can obtain the effect of channel interleaving by setting a transmission priority according to importance of puncturing target blocks, shuffling blocks with the same priority, and shuffling and transmitting bits configuring each block.

摘要翻译： 一种基于用于通信系统中的混合自动重传请求（HARQ）方案的传输方法。 使用低密度奇偶校验（LDPC）码生成码字。 基于传输优先级对码字的奇偶校验位进行分类。 具有相同传输优先级的奇偶校验位被分组。 具有相同发送优先级的码字和奇偶校验比特组的信息比特组以预定义的模式进行混洗。 根据传输优先级，从混洗信息位组和混洗奇偶校验位组生成分组。 响应于重传请求重传生成的分组。 发送方法可以根据删除目标块，具有相同优先级的混洗块的重要性，以及配置每个块的混洗和发送比特来设置传输优先级，来获得信道交织的效果。

公开(公告)号：US20070220399A1

公开(公告)日：2007-09-20

申请号：US11703595

申请日：2007-02-07

申请人： Dong-Ho Kim ,  Cheol-Woo You ,  Yung-Soo Kim ,  Ye-Hoon Lee

发明人： Dong-Ho Kim ,  Cheol-Woo You ,  Yung-Soo Kim ,  Ye-Hoon Lee

IPC分类号： H03M13/00

CPC分类号： H04L1/1819 ,  H04L1/0057 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/1816 ,  H04L1/1887

摘要： A transmission method based on a Hybrid Automatic Repeat Request (HARQ) scheme for in a communication system. A codeword is generated using a Low Density Parity Check (LDPC) code. Parity bits of the codeword are classified on a basis of a transmission priority. Parity bits with an identical transmission priority are grouped. An information bit group of the codeword and parity bit groups with the identical transmission priority are shuffled in a predefined pattern. A packet is generated from the shuffled information bit group and the shuffled parity bit groups based on the transmission priority. The generated packet is retransmitted in response to a retransmission request. The transmission method can obtain the effect of channel interleaving by setting a transmission priority according to importance of puncturing target blocks, shuffling blocks with the same priority, and shuffling and transmitting bits configuring each block.

摘要翻译： 一种基于用于通信系统中的混合自动重传请求（HARQ）方案的传输方法。 使用低密度奇偶校验（LDPC）码生成码字。 基于传输优先级对码字的奇偶校验位进行分类。 具有相同传输优先级的奇偶校验位被分组。 具有相同发送优先级的码字和奇偶校验比特组的信息比特组以预定义的模式进行混洗。 根据传输优先级，从混洗信息位组和混洗奇偶校验位组生成分组。 响应于重传请求重传生成的分组。 发送方法可以根据删除目标块，具有相同优先级的混洗块的重要性，以及配置每个块的混洗和发送比特来设置传输优先级，来获得信道交织的效果。

公开(公告)号：US20070086549A1

公开(公告)日：2007-04-19

申请号：US11543387

申请日：2006-10-05

申请人： Jae-Kwon Kim ,  Yung-Soo Kim ,  Cheol-Woo You ,  Sung-Kwon Hong ,  Mazzarese David ,  Soong-Yoon Choi ,  Gun-Chul Hwang

发明人： Jae-Kwon Kim ,  Yung-Soo Kim ,  Cheol-Woo You ,  Sung-Kwon Hong ,  Mazzarese David ,  Soong-Yoon Choi ,  Gun-Chul Hwang

IPC分类号： H04L1/02

CPC分类号： H04B7/04 ,  H04L25/03006

摘要： Detection of a signal in a receiver of a MIMO communication system includes a transmitter for signals transmission via K antennas and a receiver for receiving the signals via L reception antennas, such that L is greater than or equal to K and the system has a K×L-dimensional channel matrix, by converting the channel matrix into a plurality of matrixes having an upper triangle structure; dividing each of the matrixes into at least two sub-matrixes having a dimension lower than that of the channel matrix; detecting transmission symbols from corresponding antennas through decoding of a) lowest sub-matrix signal received which sub-matrix is constituted of components having only the channel characteristics of two antennas among the two sub-matrixes; and b) an upper sub-matrix signal using the transmission symbols; and outputting all of the detected transmission symbols, if transmission symbols by a highest sub-matrix among at least two sub-matrixes are detected.

摘要翻译： MIMO通信系统的接收机中的信号的检测包括：用于通过K个天线进行信号传输的发射机和用于经由L个接收天线接收信号的接收机，使得L大于或等于K，并且系统具有KxL- 通过将信道矩阵转换为具有上三角形结构的多个矩阵; 将每个矩阵划分成具有小于信道矩阵的维度的至少两个子矩阵; 通过对所接收到的最小子矩阵信号进行解码来检测来自相应天线的传输符号，哪个子矩阵由仅具有两个子矩阵中的两个天线的信道特性的分量构成; 以及b）使用所述发送符号的上部子矩阵信号; 并且如果检测到在至少两个子矩阵中的最高子矩阵的传输符号，则输出所有检测到的传输符号。

公开(公告)号：US07826571B2

公开(公告)日：2010-11-02

申请号：US11543387

申请日：2006-10-05

申请人： Jae-Kwon Kim ,  Yung-Soo Kim ,  Cheol-Woo You ,  Sung-Kwon Hong ,  Mazzarese David ,  Soong-Yoon Choi ,  Gun-Chul Hwang

发明人： Jae-Kwon Kim ,  Yung-Soo Kim ,  Cheol-Woo You ,  Sung-Kwon Hong ,  Mazzarese David ,  Soong-Yoon Choi ,  Gun-Chul Hwang

IPC分类号： H04L1/02

CPC分类号： H04B7/04 ,  H04L25/03006

摘要： Detection of a signal in a receiver of a MIMO communication system includes a transmitter for signals transmission via K antennas and a receiver for receiving the signals via L reception antennas, such that L is greater than or equal to K and the system has a K×L-dimensional channel matrix, by converting the channel matrix into a plurality of matrixes having an upper triangle structure; dividing each of the matrixes into at least two sub-matrixes having a dimension lower than that of the channel matrix; detecting transmission symbols from corresponding antennas through decoding of a) lowest sub-matrix signal received which sub-matrix is constituted of components having only the channel characteristics of two antennas among the two sub-matrixes; and b) an upper sub-matrix signal using the transmission symbols; and outputting all of the detected transmission symbols, if transmission symbols by a highest sub-matrix among at least two sub-matrixes are detected.

摘要翻译： MIMO通信系统的接收机中的信号的检测包括用于经由K个天线的信号传输的发射机和用于经由L个接收天线接收信号的接收机，使得L大于或等于K，并且系统具有K× 通过将信道矩阵转换成具有上三角形结构的多个矩阵来生成L维信道矩阵; 将每个矩阵划分成具有小于信道矩阵的维度的至少两个子矩阵; 通过对所接收到的最小子矩阵信号进行解码来检测来自相应天线的传输符号，哪个子矩阵由仅具有两个子矩阵中的两个天线的信道特性的分量构成; 以及b）使用所述发送符号的上部子矩阵信号; 并且如果检测到在至少两个子矩阵中的最高子矩阵的传输符号，则输出所有检测到的传输符号。

公开(公告)号：US20070162816A1

公开(公告)日：2007-07-12

申请号：US11582007

申请日：2006-10-17

申请人： Dong-Ho Kim ,  Ye-Hoon Lee ,  Nam-Shik Kim ,  Hyun-Cheol Park ,  Cheol-Woo You

发明人： Dong-Ho Kim ,  Ye-Hoon Lee ,  Nam-Shik Kim ,  Hyun-Cheol Park ,  Cheol-Woo You

IPC分类号： H03M13/00

CPC分类号： H03M13/033 ,  H03M13/116 ,  H03M13/118

摘要： A method for generating a parity check matrix of a Low Density Parity Check (LDPC) code. A base matrix is generated in which elements with a value of 1 are arranged at predefined distances. The elements with the value of 1 in the base matrix are replaced with predefined sub-matrices. The method can improve the performance of the LDPC code by implementing the parity check matrix in which the number of 4-cycles or 6-cycles adversely affecting the LDPC code performance is minimized.

摘要翻译： 一种用于生成低密度奇偶校验（LDPC）码的奇偶校验矩阵的方法。 生成基本矩阵，其中值为1的元素以预定距离排列。 在基本矩阵中具有值1的元素被预定义的子矩阵替代。 该方法可以通过实现对LDPC码性能有不利影响的4个周期或6个周期数的奇偶校验矩阵来提高LDPC码的性能。

公开(公告)号：US20070245211A1

公开(公告)日：2007-10-18

申请号：US11399220

申请日：2006-04-06

申请人： Joon-Sung Kim ,  Hong-Yeop Song ,  Dong-Ho Kim ,  Cheol-Woo You ,  Ye-Hoon Lee

发明人： Joon-Sung Kim ,  Hong-Yeop Song ,  Dong-Ho Kim ,  Cheol-Woo You ,  Ye-Hoon Lee

IPC分类号： H03M13/00

CPC分类号： H04L1/0045 ,  H03M13/1102 ,  H03M13/29 ,  H03M13/2906 ,  H03M13/6502 ,  H04L1/0057 ,  H04L1/0064

摘要： A decoding method in a concatenated low-density generator matrix (LDGM) code-based transmission system for detecting a signal using a parity check matrix including a systematic bit part mapped to systematic bits and a parity check part mapped to parity bits. The decoding method includes generating an outer code parity check matrix with a predetermined size using a pseudorandom algorithm; generating an inner code parity check matrix using the outer code parity check matrix; and decoding a received signal using the inner code parity check matrix.

摘要翻译： 一种用于使用包括映射到系统位的系统位部分的奇偶校验矩阵和映射到奇偶校验位的奇偶校验部分来检测信号的级联低密度生成矩阵（LDGM）码传输系统中的解码方法。 解码方法包括使用伪随机算法生成具有预定大小的外码奇偶校验矩阵; 使用所述外码奇偶校验矩阵生成内码奇偶校验矩阵; 以及使用内码奇偶校验矩阵对接收信号进行解码。

公开(公告)号：US20070230628A1

公开(公告)日：2007-10-04

申请号：US11716343

申请日：2007-03-09

申请人： Cheol-Woo You ,  Dong-Ho Kim ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Hyun-Cheol Park ,  Nam-Shik Kim

发明人： Cheol-Woo You ,  Dong-Ho Kim ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Hyun-Cheol Park ,  Nam-Shik Kim

IPC分类号： H04L27/06 ,  H04L1/02

CPC分类号： H04L1/06 ,  H04L25/03006 ,  H04L2025/03426

摘要： An apparatus is provided for detecting a signal in a communication system using a Multiple Input Multiple Output (MIMO) scheme. The signal detection apparatus includes a detector for generating second matrixes by extending a first matrix composed of channel response vectors, generating specific matrixes by decomposing the second matrixes, generating a lattice point of vectors constituting the second matrixes, estimating a signal using the generated specific matrixes and lattice point, and detecting the estimated signal as a received signal if the estimated signal has a value within a predetermined allowable range.

摘要翻译： 提供一种用于在使用多输入多输出（MIMO）方案的通信系统中检测信号的装置。 信号检测装置包括：检测器，用于通过扩展由信道响应向量组成的第一矩阵来产生第二矩阵，通过分解第二矩阵产生特定矩阵，产生构成第二矩阵的向量的格点，使用所生成的特定矩阵估计信号 并且如果所估计的信号具有在预定允许范围内的值，则将所估计的信号作为接收信号进行检测。

公开(公告)号：US20080018535A1

公开(公告)日：2008-01-24

申请号：US11776631

申请日：2007-07-12

申请人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Dong-Ho Kim ,  Vahid Tarokh

发明人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Dong-Ho Kim ,  Vahid Tarokh

IPC分类号： H01Q21/00

CPC分类号： H01Q21/00 ,  H01Q1/52

摘要： An apparatus and method for removing interference in a transmitting end of a multi-antenna system is provided. The method includes decomposing a channel matrix comprising channel coefficients for a plurality of terminals, calculating a value proportional to an interference signal for each of antennas, and calculating a sum of a transmission signal and the calculated value for each terminal and multiplying the calculated sum by the decomposed channel matrix. Accordingly, channel capacity can be improved by optimizing a data transfer rate and transmission power for each terminal.

摘要翻译： 提供一种用于消除多天线系统的发送端的干扰的装置和方法。 该方法包括分解包括多个终端的信道系数的信道矩阵，计算与每个天线的干扰信号成比例的值，并且计算每个终端的发送信号和计算值的和，并将计算出的和乘以 分解的信道矩阵。 因此，通过优化每个终端的数据传输速率和传输功率可以提高信道容量。