公开(公告)号：US08051356B2

公开(公告)日：2011-11-01

申请号：US12024336

申请日：2008-02-01

申请人： Sung-Eun Park ,  Dong-Seek Park ,  Jae Yoel Kim

发明人： Sung-Eun Park ,  Dong-Seek Park ,  Jae Yoel Kim

IPC分类号： H03M13/00

CPC分类号： H03M13/116 ,  H03M13/1137 ,  H03M13/114

摘要： Provided are an apparatus and method for receiving a signal in a communication system, in which a signal is received and decoded by setting an offset indicating a start position of a node operation for each block column of a parity check matrix of a Low Density Parity Check (LDPC) code and scheduling an order of performing the node operation on a Partial Parallel Scheduling (PPS) group basis. Here, the parity check matrix includes p×L rows and q×L columns, the p×L rows are grouped into p block rows, the q×L columns are grouped into q block columns, and each PPS group includes one column from each of the q block columns.

摘要翻译： 提供了一种用于在通信系统中接收信号的装置和方法，其中通过设置指示低密度奇偶校验校验矩阵的每个块列的节点操作的开始位置的偏移来接收和解码信号 （LDPC）组，并且基于部分并行调度（PPS）组来调度执行节点操作的顺序。 这里，奇偶校验矩阵包括p×L行和q×L列，p×L行被分组为p个块行，q×L列被分组成q个块列，并且每个PPS组包括每个 的q块列。

公开(公告)号：US20080189589A1

公开(公告)日：2008-08-07

申请号：US12024336

申请日：2008-02-01

申请人： Sung-Eun PARK ,  Dong-Seek Park ,  Jae Yoel Kim

发明人： Sung-Eun PARK ,  Dong-Seek Park ,  Jae Yoel Kim

IPC分类号： H03M13/00

CPC分类号： H03M13/116 ,  H03M13/1137 ,  H03M13/114

摘要： Provided are an apparatus and method for receiving a signal in a communication system, in which a signal is received and decoded by setting an offset indicating a start position of a node operation for each block column of a parity check matrix of a Low Density Parity Check (LDPC) code and scheduling an order of performing the node operation on a Partial Parallel Scheduling (PPS) group basis. Here, the parity check matrix includes p×L rows and q×L columns, the p×L rows are grouped into p block rows, the q×L columns are grouped into q block columns, and each PPS group includes one column from each of the q block columns.

摘要翻译： 提供了一种用于在通信系统中接收信号的装置和方法，其中通过设置指示低密度奇偶校验校验矩阵的每个块列的节点操作的开始位置的偏移来接收和解码信号 （LDPC）组，并且基于部分并行调度（PPS）组来调度执行节点操作的顺序。 这里，奇偶校验矩阵包括pxL行和qxL列，pxL行被分组为p个块行，qxL列被分组为q个块列，并且每个PPS组包括来自每个q块列的一列。

公开(公告)号：US20100153813A1

公开(公告)日：2010-06-17

申请号：US12633391

申请日：2009-12-08

申请人： Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun ,  Hak Ju Lee

发明人： Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun ,  Hak Ju Lee

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H04L1/0057 ,  H03M13/1185 ,  H04L1/0041 ,  H04L1/005

摘要： An encoding method using a Low Density Parity Check (LDPC) matrix having a codeword length of N and an information word length K is provided to improve coding efficiency, and includes generating a first parity bit vector (p1) using the low density parity check matrix, generating a second parity bit vector (p2), performing L-parallel iterative accumulation encoding on the first parity bit vector, and generating a codeword vector c=(s,p1,p2) including an information word vector and the first and second parity bit vectors. The communication method and apparatus herein provides an efficient encoding algorithm using the trade-off relationship between a circuit implementation and operation and delay complexities.

摘要翻译： 提供一种使用码字长度N和信息字长度K的低密度奇偶校验（LDPC）矩阵的编码方法以提高编码效率，并且包括使用低密度奇偶校验矩阵生成第一奇偶校验位向量（p1） ，产生第二奇偶校验位向量（p2），对第一奇偶校验位向量执行L并行迭代累加编码，以及生成包括信息字矢量和第一和第二奇偶校验的码字矢量c =（s，p1，p2） 位向量。 这里的通信方法和装置提供了使用电路实现和操作之间的权衡关系和延迟复杂度的有效的编码算法。

公开(公告)号：US08995538B2

公开(公告)日：2015-03-31

申请号：US12658293

申请日：2010-02-05

申请人： Yeon Ju Lim ,  Jae Yoel Kim ,  Sung Ryul Yun ,  Hak Ju Lee ,  Se Ho Myung

发明人： Yeon Ju Lim ,  Jae Yoel Kim ,  Sung Ryul Yun ,  Hak Ju Lee ,  Se Ho Myung

IPC分类号： H04L27/28 ,  H04L5/00 ,  H04L1/00

CPC分类号： H04L5/0044 ,  H04L1/0026 ,  H04L1/0029 ,  H04L5/006

摘要： An apparatus is capable of distributing power over a number of subcarriers in an OFDM system. The transmission power control method for an Orthogonal Frequency Division Multiplexing (OFDM) communication system according to the present invention includes measuring, at a receiver, channel coefficients of subcarriers, classifying the subcarriers into a predetermined number of groups according to sizes of channel coefficients, generating group indices, and transmitting the group indices of the subcarriers to a transmitter. A transmitter is capable of receiving the group indices of the subcarriers, determining per-group transmission powers, allocating the per-group transmission powers to the corresponding groups, distributing the per-group transmission power over subcarriers in the same level within respective groups, and transmitting signals over the subcarriers with the distributed power level.

摘要翻译： 一种装置能够在OFDM系统中的多个子载波上分配功率。 根据本发明的用于正交频分复用（OFDM）通信系统的发送功率控制方法包括：在接收机处测量子载波的信道系数，根据信道系数的大小将子载波分类为预定数量的组，生成 组索引，并将子载波的组索引发送到发射机。 发射机能够接收子载波的组索引，确定每组发射功率，向相应组分配每组发射功率，在各组内的相同电平上的子载波上分配每组发射功率，以及 在具有分布式功率电平的子载波上传输信号。

公开(公告)号：US08495459B2

公开(公告)日：2013-07-23

申请号：US12624098

申请日：2009-11-23

申请人： Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun ,  Hak Ju Lee

发明人： Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun ,  Hak Ju Lee

IPC分类号： H03M13/00

CPC分类号： H03M13/1165 ,  H03M13/1185 ,  H03M13/6516

摘要： An encoding/decoding apparatus and method using a low-density parity-check code (LDPC code) is disclosed. Basic column group information, serving as a set of information regarding positions of rows with weight 1, is extracted from a reference column in each column group of a predetermined parity-check matrix. Column group information transforms the positions of rows with weight 1 into positions whose lengths are within a required parity length. A parity-check matrix is generated according to the generated column group information. Data is encoded or decoded based on the generated parity-check matrix.

摘要翻译： 公开了一种使用低密度奇偶校验码（LDPC码）的编码/解码装置和方法。 从预定奇偶校验矩阵的每列组中的参考列中提取用作关于具有权重1的行的位置的信息集合的基本列组信息。 列组信息将具有权重1的行的位置变换为长度在所需奇偶校验长度内的位置。 根据生成的列组信息生成奇偶校验矩阵。 基于生成的奇偶校验矩阵对数据进行编码或解码。

公开(公告)号：US09065615B2

公开(公告)日：2015-06-23

申请号：US12582266

申请日：2009-10-20

申请人： Hak Ju Lee ,  Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun

发明人： Hak Ju Lee ,  Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun

IPC分类号： H04J11/00 ,  H04L27/00 ,  H04L27/28 ,  H03M13/05 ,  H03M13/15 ,  H03M13/27 ,  H04L5/00 ,  H04L1/00 ,  H04L27/26

CPC分类号： H04L27/2643 ,  H04L1/0004 ,  H04L1/0036 ,  H04L1/0047 ,  H04L1/0072 ,  H04L1/0079 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2602 ,  H04L27/2617 ,  H04L27/2647 ,  H04L27/2692 ,  H04L69/22

摘要： A method and apparatus for transmitting and receiving a preamble having sequence information for an OFDM system is provided. The preamble transmission method includes generating a preamble block including at least one frame having a header with a known sequence and a code block containing control information and transmitting the preamble block mapped to Orthogonal Frequency Division Multiplexing (OFDM) cells by repeating in frequency axis direction.

摘要翻译： 提供一种用于发送和接收具有用于OFDM系统的序列信息的前同步码的方法和装置。 前导码发送方法包括：生成包括具有已知序列的头部的至少一个帧的前导码块和包含控制信息的代码块，并且通过在频率轴方向重复来发送映射到正交频分复用（OFDM）小区的前导码块。

公开(公告)号：US20100162073A1

公开(公告)日：2010-06-24

申请号：US12641888

申请日：2009-12-18

申请人： Se Ho MYUNG ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun ,  Hak Ju Lee

发明人： Se Ho MYUNG ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun ,  Hak Ju Lee

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H03M13/1102 ,  H03M13/255 ,  H03M13/356 ,  H03M13/616 ,  H04L1/0057 ,  H04L27/34 ,  H04L2001/0098

摘要： An improved bit mapping method and apparatus for a communication system is provided. A bit mapping method of the present invention includes arranging coded bits in a codeword in an order of recovery capability; setting a shift region including a number of coded bits; rearranging the coded bits in the shift region by shifting the shift region by a number of bits equal to a number of bits that is indicated by a shift factor; and mapping the rearranged coded bits into a modulation symbol in an order of reliability from a lowest reliability bit position to a highest reliability bit position of the modulation symbol.

摘要翻译： 提供了一种用于通信系统的改进的位映射方法和装置。 本发明的比特映射方法包括按照恢复能力的顺序排列码字中的编码比特; 设置包括多个编码比特的移位区域; 通过将移位区域移位等于由移位因子指示的位数的位数来重新排列移位区域中的编码位; 并且将重新排列的编码比特从调制符号的最低可靠性比特位置到最高可靠性比特位置的可靠性顺序映射到调制符号中。

公开(公告)号：US20100135422A1

公开(公告)日：2010-06-03

申请号：US12582266

申请日：2009-10-20

申请人： Hak Ju Lee ,  Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun

发明人： Hak Ju Lee ,  Se Ho Myung ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Sung Ryul Yun

IPC分类号： H04L27/28

CPC分类号： H04L27/2643 ,  H04L1/0004 ,  H04L1/0036 ,  H04L1/0047 ,  H04L1/0072 ,  H04L1/0079 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2602 ,  H04L27/2617 ,  H04L27/2647 ,  H04L27/2692 ,  H04L69/22

摘要： A method and apparatus for transmitting and receiving a preamble having sequence information for an OFDM system is provided. The preamble transmission method includes generating a preamble block including at least one frame having a header with a known sequence and a code block containing control information and transmitting the preamble block mapped to Orthogonal Frequency Division Multiplexing (OFDM) cells by repeating in frequency axis direction.

摘要翻译： 提供一种用于发送和接收具有用于OFDM系统的序列信息的前同步码的方法和装置。 前导码发送方法包括：生成包括具有已知序列的头部的至少一个帧的前导码块和包含控制信息的代码块，并且通过在频率轴方向重复来发送映射到正交频分复用（OFDM）小区的前导码块。

公开(公告)号：US09172572B2

公开(公告)日：2015-10-27

申请号：US12694801

申请日：2010-01-27

申请人： Sung Ryul Yun ,  Hak Ju Lee ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Se Ho Myung

发明人： Sung Ryul Yun ,  Hak Ju Lee ,  Jae Yoel Kim ,  Yeon Ju Lim ,  Se Ho Myung

IPC分类号： H04K1/10 ,  H04L27/26 ,  H04L5/00 ,  H04H20/78

CPC分类号： H04L27/2618 ,  H04H20/78 ,  H04L5/0044

摘要： A Digital Video Broadcasting-Cable (DVB-C) system and a processing method for reserved tones are provided. A transmitter determines a position of broadcast data and a position of reserved tones in a frame and sends a broadcast signal into which the broadcast data and the reserved tones are inserted. A receiver determines the position of reserved tones in a received broadcast signal and extracts broadcast data from the broadcast signal in consideration of the determined position of the reserved tones. The system and method may compensate for the peak power of broadcast data to be transmitted through a multi-channel bundle, by inserting reserved tones into the whole multi-channel bundle with combined channel bands. This may reduce the Peak to Average Power Ratio (PAPR) of broadcast signals in the DVB-C system and thereby improve the performance of the DVB-C system while still adopting Orthogonal Frequency Division Multiplexing (OFDM).

摘要翻译： 提供数字视频广播电缆（DVB-C）系统和用于保留音调的处理方法。 发射机确定广播数据的位置和帧中的保留音调的位置，并发送广播信号，广播数据和保留音被插入到该广播信号中。 接收机在接收到的广播信号中确定保留音调的位置，并考虑到所保留的音调的确定位置，从广播信号中提取广播数据。 该系统和方法可以通过将保留的音调插入到具有组合信道频带的整个多信道束中来补偿要通过多信道束发送的广播数据的峰值功率。 这可能降低DVB-C系统中广播信号的峰均功率比（PAPR），从而提高DVB-C系统的性能，同时采用正交频分复用（OFDM）。

公开(公告)号：US20100202545A1

公开(公告)日：2010-08-12

申请号：US12658293

申请日：2010-02-05

申请人： Yeon Ju Lim ,  Jae Yoel Kim ,  Sung Ryul Yun ,  Hak Ju Lee ,  Se Ho Myung

发明人： Yeon Ju Lim ,  Jae Yoel Kim ,  Sung Ryul Yun ,  Hak Ju Lee ,  Se Ho Myung

IPC分类号： H04L27/28

CPC分类号： H04L5/0044 ,  H04L1/0026 ,  H04L1/0029 ,  H04L5/006

摘要： An apparatus is capable of distributing power over a number of subcarriers in an OFDM system. The transmission power control method for an Orthogonal Frequency Division Multiplexing (OFDM) communication system according to the present invention includes measuring, at a receiver, channel coefficients of subcarriers, classifying the subcarriers into a predetermined number of groups according to sizes of channel coefficients, generating group indices, and transmitting the group indices of the subcarriers to a transmitter. A transmitter is capable of receiving the group indices of the subcarriers, determining per-group transmission powers, allocating the per-group transmission powers to the corresponding groups, distributing the per-group transmission power over subcarriers in the same level within respective groups, and transmitting signals over the subcarriers with the distributed power level.

摘要翻译： 一种装置能够在OFDM系统中的多个子载波上分配功率。 根据本发明的用于正交频分复用（OFDM）通信系统的发送功率控制方法包括：在接收机处测量子载波的信道系数，根据信道系数的大小将子载波分类为预定数量的组，生成 组索引，并将子载波的组索引发送到发射机。 发射机能够接收子载波的组索引，确定每组发射功率，向相应组分配每组发射功率，在各组内的相同电平上的子载波上分配每组发射功率，以及 在具有分布式功率电平的子载波上传输信号。