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：US20070101243A1

公开(公告)日：2007-05-03

申请号：US11541749

申请日：2006-10-02

申请人： Dong-Ho Kim ,  Yung-Soo Kim ,  Ye-Hoon Lee ,  Myeon-Gyun Cho ,  Hyo-Yol Park ,  Keum-Chan Whang ,  Kwang-Soon Kim ,  Jae-Won Kang

发明人： Dong-Ho Kim ,  Yung-Soo Kim ,  Ye-Hoon Lee ,  Myeon-Gyun Cho ,  Hyo-Yol Park ,  Keum-Chan Whang ,  Kwang-Soon Kim ,  Jae-Won Kang

IPC分类号： H03M13/03

CPC分类号： H03M13/1102 ,  H03M13/6306 ,  H03M13/6362

摘要： A method for puncturing a Low Density Parity Check (LDPC). The method includes a) setting a codeword length and the total number of bit nodes to be punctured; b) selecting a check node (or check nodes) with highest priority excluding check nodes completely checked in a current round; c) selecting a bit node (or bit nodes) with a highest priority excluding bit nodes completely checked among bit nodes connected to the selected check node (or check nodes); d) determining whether the selected bit node is a bit node to be punctured, that is, it is not systematic, not set by a puncturing prohibition flag; e) puncturing an associated bit node if the selected bit node is the bit node to be punctured, setting unpunctured bit nodes connected to the selected check node by a puncturing prohibition flag, decreasing the number of remained bit nodes to be punctured by 1 and increasing the number of connected punctured node of associated check node by 1; f) determining whether the number of remaining bits to be punctured is greater than 0; and g) returning to step b) if the number of remaining bits to be punctured is greater than 0, and ending a puncturing process if the number of remaining bits to be punctured is not greater than 0.

摘要翻译： 一种用于打孔低密度奇偶校验（LDPC）的方法。 该方法包括：a）设置码字长度和要被穿孔的比特节点的总数; b）选择具有最高优先级的校验节点（或校验节点），不包括在当前轮次中完全检查的校验节点; c）选择具有最高优先级的比特节点（或比特节点），不包括连接到所选择的校验节点（或校验节点）的比特节点之间完全检查的比特节点; d）确定所选择的比特节点是否是要被穿孔的比特节点，即，它不是系统的，不被打孔禁止标志设置; e）如果选择的比特节点是要被穿孔的比特节点，则对相关联的比特节点进行穿孔，通过打孔禁止标志来设置连接到所选择的校验节点的未穿孔比特节点，将要被穿孔的剩余比特节点的数量减少1并增加 相关检查节点的连接穿孔节点数目为1; f）确定要穿孔的剩余比特数是否大于0; 以及g）如果要删除的剩余比特数大于0，则返回到步骤b），并且如果要穿孔的剩余比特数不大于0，则结束打孔处理。

公开(公告)号：US20050180313A1

公开(公告)日：2005-08-18

申请号：US11002843

申请日：2004-12-02

申请人： Yung-Soo Kim ,  Ye-Hoon Lee

发明人： Yung-Soo Kim ,  Ye-Hoon Lee

IPC分类号： H04J4/00 ,  H04J11/00 ,  H04L1/00 ,  H04L5/02 ,  H04L27/26

CPC分类号： H04L5/0042 ,  H04L1/0009 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0046 ,  H04L5/006

摘要： In an OFDMA mobile communication system in which a total frequency band is divided into a plurality of sub-carrier bands, for signal transmission, to assign sub-carriers to MSs, a BS divides the total frequency band into L sub-frequency bands. The BS detects the channel condition of each of the MSs and determines a sub-frequency band for each MS according to the channel condition among the L sub-frequency bands. The BS assigns sub-carriers in the determined sub-frequency band at a predetermined sub-carrier spacing to each MS.

摘要翻译： 在总频带被划分成多个子载波频带的OFDMA移动通信系统中，为了进行信号传输，为了向MS分配子载波，BS将总频带划分为L个子频带。 BS检测每个MS的信道状况，并根据L个子频带中的信道状况确定每个MS的子频带。 BS以确定的子频带以每个MS以预定的子载波间隔分配子载波。

公开(公告)号：US07734988B2

公开(公告)日：2010-06-08

申请号：US11541749

申请日：2006-10-02

申请人： Dong-Ho Kim ,  Yung-Soo Kim ,  Ye-Hoon Lee ,  Myeon-Gyun Cho ,  Hyo-Yol Park ,  Keum-Chan Whang ,  Kwang-Soon Kim ,  Jae-Won Kang

发明人： Dong-Ho Kim ,  Yung-Soo Kim ,  Ye-Hoon Lee ,  Myeon-Gyun Cho ,  Hyo-Yol Park ,  Keum-Chan Whang ,  Kwang-Soon Kim ,  Jae-Won Kang

IPC分类号： H03M13/35

CPC分类号： H03M13/1102 ,  H03M13/6306 ,  H03M13/6362

摘要： A method for puncturing a Low Density Parity Check (LDPC). The method includes a) setting a codeword length and the total number of bit nodes to be punctured; b) selecting a check node (or check nodes) with highest priority excluding check nodes completely checked in a current round; c) selecting a bit node (or bit nodes) with a highest priority excluding bit nodes completely checked among bit nodes connected to the selected check node (or check nodes); d) determining whether the selected bit node is a bit node to be punctured, that is, it is not systematic, not set by a puncturing prohibition flag; e) puncturing an associated bit node if the selected bit node is the bit node to be punctured, setting unpunctured bit nodes connected to the selected check node by a puncturing prohibition flag, decreasing the number of remained bit nodes to be punctured by 1 and increasing the number of connected punctured node of associated check node by 1; f) determining whether the number of remaining bits to be punctured is greater than 0; and g) returning to step b) if the number of remaining bits to be punctured is greater than 0, and ending a puncturing process if the number of remaining bits to be punctured is not greater than 0.

摘要翻译： 一种用于打孔低密度奇偶校验（LDPC）的方法。 该方法包括：a）设置码字长度和要被穿孔的比特节点的总数; b）选择具有最高优先级的校验节点（或校验节点），不包括在当前轮次中完全检查的校验节点; c）选择具有最高优先级的比特节点（或比特节点），不包括连接到所选择的校验节点（或校验节点）的比特节点之间完全检查的比特节点; d）确定所选择的比特节点是否是要被穿孔的比特节点，即，它不是系统的，不被打孔禁止标志设置; e）如果选择的比特节点是要被穿孔的比特节点，则对相关联的比特节点进行穿孔，通过打孔禁止标志来设置连接到所选择的校验节点的未穿孔比特节点，将要被穿孔的剩余比特节点的数量减少1并增加 相关检查节点的连接穿孔节点数目为1; f）确定要穿孔的剩余比特数是否大于0; 以及g）如果要删除的剩余比特数大于0，则返回到步骤b），并且如果要穿孔的剩余比特数不大于0，则结束打孔处理。

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：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：US08155229B2

公开(公告)日：2012-04-10

申请号：US11603859

申请日：2006-11-22

申请人： Ye-Hoon Lee ,  Dong-Ho Kim ,  Yeheskel Bar-Ness ,  Jordi Diaz

发明人： Ye-Hoon Lee ,  Dong-Ho Kim ,  Yeheskel Bar-Ness ,  Jordi Diaz

IPC分类号： H04B7/02

CPC分类号： H04L1/0618 ,  H04L27/2626

摘要： An apparatus is provided for transmitting a signal in a communication system. Upon receipt of an information vector, the apparatus includes converting the information vector into a plurality of sub-information vectors; performing coding and modulation on each of the sub-information vectors according to a corresponding mode thereby generating a modulation symbol; interleaving the modulation symbol generated for each of the sub-information vectors; allocating power to the interleaved modulation symbol for each individual mode; and beamforming the modulation symbols power-allocated for each individual mode, and transmitting the beamforming symbols.

摘要翻译： 提供一种用于在通信系统中发送信号的装置。 在接收到信息向量时，该装置包括将信息向量转换成多个子信息向量; 根据对应模式对每个子信息向量执行编码和调制，从而生成调制符号; 交织对每个子信息向量生成的调制符号; 为每个单独模式分配交织调制符号的功率; 以及波束成形为每个单独模式功率分配的调制符号，以及发送波束形成符号。

公开(公告)号：US07391817B2

公开(公告)日：2008-06-24

申请号：US10858617

申请日：2004-06-02

申请人： Ye-Hoon Lee

发明人： Ye-Hoon Lee

IPC分类号： H04L1/02

CPC分类号： H04B7/0634

摘要： A method and apparatus for adaptively determining weights for transmission antennas according to a channel condition in a closed-loop transmit diversity system using a plurality of transmission antennas. The antenna weights are determined using variation of channel characteristics based on time and space, to thereby improve bit error rate performance. Parameters for fixing average transmission power per symbol according to the statistical channel characteristics for symbol energy and additive white Gaussian nose energy are previously determined to estimate channel characteristics. The antenna weights are determined using the parameters and channel gains estimated upon reception of data symbols.

摘要翻译： 一种用于根据使用多个发送天线的闭环发射分集系统中的信道条件自适应地确定发射天线的权重的方法和装置。 使用基于时间和空间的信道特性的变化确定天线权重，从而提高误码率性能。 预先确定根据符号能量和加性白高斯鼻能的统计通道特性固定每符号的平均发射功率的参数，以估计信道特性。 使用在接收数据符号时估计的参数和信道增益来确定天线权重。

公开(公告)号：US20070127592A1

公开(公告)日：2007-06-07

申请号：US11603857

申请日：2006-11-22

申请人： Ye-Hoon Lee ,  Dong-Ho Kim ,  Yeheskel Bar-Ness ,  Kodzovi Acolatse

发明人： Ye-Hoon Lee ,  Dong-Ho Kim ,  Yeheskel Bar-Ness ,  Kodzovi Acolatse

IPC分类号： H04L27/00 ,  H04K1/10

CPC分类号： H04L1/0041 ,  H04L1/0056 ,  H04L1/0643 ,  H04L1/0668 ,  H04L1/1607 ,  H04L1/1812 ,  H04L1/1893

摘要： An apparatus for transmitting a signal in a communication system includes: MT number of transmission antennas; a space-time encoder for generating MT number of transmission symbol streams by space-time encoding MT number of modulation symbol streams in accordance with a space-time encoding scheme determined by a predetermined control, and transmitting each of the MT transmission symbol streams through a corresponding transmission antenna from among the MT transmission antennas; and a controller for determining the space-time encoding scheme based on an iteration number of transmission, which indicates the number of times by which an information data bit stream corresponding to the MT modulation symbol streams has been transmitted.

摘要翻译： 用于在通信系统中发送信号的装置包括：发送天线的数量; 空间编码器，用于根据确定的时空编码方案，通过调制符号流的空时编码M N T N个数来产生传输符号流的数目 通过预定的控制，并且从多个发送天线之间通过相应的发送天线发送每个M SUB传输符号流; 以及控制器，用于基于传送的迭代次数来确定空时编码方案，所述迭代次数表示已经发送了与调制符号流对应的信息数据比特流的次数 。