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1. 发明授权

US07734988B2 Method for puncturing a low density parity check code 有权
标题翻译：打孔低密度奇偶校验码的方法
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。

2. 发明申请

US20070101243A1 Method for puncturing a low density parity check code 有权
标题翻译：打孔低密度奇偶校验码的方法
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。

3. 发明申请

US20070202889A1 Method for puncturing a low density parity check code 审中-公开
标题翻译：打孔低密度奇偶校验码的方法
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。

4. 发明授权

US08117516B2 Apparatus and method for signal transmission/reception in a communication system 有权
标题翻译：通信系统中信号发送/接收的装置和方法
公开(公告)号：US08117516B2
公开(公告)日：2012-02-14
申请号：US11935259
申请日：2007-11-05
申请人： Dong-Ho Kim , Yung-Soo Kim , Tak-Ki Yu , Keum-Chan Whang , Kwang-Soon Kim , Hyo-Yol Park
发明人： Dong-Ho Kim , Yung-Soo Kim , Tak-Ki Yu , Keum-Chan Whang , Kwang-Soon Kim , Hyo-Yol Park
IPC分类号： H03M13/00
CPC分类号： H03M13/1102 , H03M13/033 , H03M13/6393
摘要： A method and an apparatus for transmitting a signal in a communication system are provided. An information vector is encoded according to a Low Density Parity Check (LDPC) encoding scheme, thereby generating an LDPC codeword. Minimum surviving check nodes are reserved for recovery of punctured nodes in the LDPC codeword. A check node is selected having a smallest cost function from among unreserved check nodes. A variable node is selected being unpunctured and having a smallest cost function from among variable nodes connected to the selected check node. The selected variable node is punctured when the selected variable node is not connected to the reserved check node. A stopping set check is performed when the selected variable node is connected to the reserved check node. The variable node is punctured when the stopping set check has been successfully performed. The check node is selected until there remains no variable node to be punctured and puncturing the variable node.
摘要翻译：提供了一种用于在通信系统中发送信号的方法和装置。根据低密度奇偶校验（LDPC）编码方案对信息向量进行编码，从而生成LDPC码字。保留最小存活检查节点用于恢复LDPC码字中的穿孔节点。从未预留的校验节点中选择具有最小成本函数的校验节点。从连接到所选择的校验节点的变量节点中选择变量节点是未穿刺的并且具有最小的成本函数。当所选择的变量节点未连接到保留的校验节点时，所选择的变量节点被打孔。当所选变量节点连接到保留校验节点时，执行停止集检查。当成功执行停止设置检查时，变量节点被打孔。选中校验节点，直到不存在要删除的变量节点并对该变量节点进行删截。

5. 发明申请

US20080109708A1 APPARATUS AND METHOD FOR SIGNAL TRANSMISSION/RECEPTION IN A COMMUNICATION SYSTEM 有权
标题翻译：通信系统中信号传输/接收的装置和方法
公开(公告)号：US20080109708A1
公开(公告)日：2008-05-08
申请号：US11935259
申请日：2007-11-05
申请人： Dong-Ho KIM , Yung-Soo Kim , Tak-Ki Yu , Keum-Chan Whang , Kwang-Soon Kim , Hyo-Yol Park
发明人： Dong-Ho KIM , Yung-Soo Kim , Tak-Ki Yu , Keum-Chan Whang , Kwang-Soon Kim , Hyo-Yol Park
IPC分类号： H03M13/03
CPC分类号： H03M13/1102 , H03M13/033 , H03M13/6393
摘要： A method and an apparatus for transmitting a signal in a communication system are provided. An information vector is encoded according to a Low Density Parity Check (LDPC) encoding scheme, thereby generating an LDPC codeword. Minimum surviving check nodes are reserved for recovery of punctured nodes in the LDPC codeword. A check node is selected having a smallest cost function from among unreserved check nodes. A variable node is selected being unpunctured and having a smallest cost function from among variable nodes connected to the selected check node. The selected variable node is punctured when the selected variable node is not connected to the reserved check node. A stopping set check is performed when the selected variable node is connected to the reserved check node. The variable node is punctured when the stopping set check has been successfully performed. The check node is selected until there remains no variable node to be punctured and puncturing the variable node.
摘要翻译：提供了一种用于在通信系统中发送信号的方法和装置。根据低密度奇偶校验（LDPC）编码方案对信息向量进行编码，从而生成LDPC码字。保留最小存活检查节点用于恢复LDPC码字中的穿孔节点。从未预留的校验节点中选择具有最小成本函数的校验节点。从连接到所选择的校验节点的变量节点中选择变量节点是未穿刺的并且具有最小的成本函数。当所选择的变量节点未连接到保留的校验节点时，所选择的变量节点被打孔。当所选变量节点连接到保留校验节点时，执行停止集检查。当成功执行停止设置检查时，变量节点被打孔。选中校验节点，直到不存在要删除的变量节点并对该变量节点进行删截。

6. 发明申请

US20080305818A1 Adaptive Transmission Device Using Limited Feedback Information in a Mobile Communication System, and a Method Thereof 有权
标题翻译：在移动通信系统中使用有限反馈信息的自适应传输设备及其方法
公开(公告)号：US20080305818A1
公开(公告)日：2008-12-11
申请号：US12096324
申请日：2005-12-19
申请人： Young-Jo Ko , Jae-Young Ahn , Kwang-Soon Kim , Jung-Hyoung Kwon , Keum-Chan Whang
发明人： Young-Jo Ko , Jae-Young Ahn , Kwang-Soon Kim , Jung-Hyoung Kwon , Keum-Chan Whang
IPC分类号： H04Q7/00
CPC分类号： H04W72/0453 , H04L5/006 , H04L5/023 , H04L25/0204 , H04L27/2608 , H04W72/085
摘要： The present invention relates to an adaptive transmitting device using limited feedback information in a mobile communication system, and a method thereof. According to an exemplary embodiment of the present invention, when the base station transmits a pilot signal to the terminal, the terminal generates channel information by using the pilot signal, generates additional channel information from the channel information, and transmits the channel information and the additional channel information to the base station. The base station determines band allocation, power allocation, and modulation methods for each use by using received feedback information, and transmits modulated traffic data to the terminal according to the determined methods.
摘要翻译：本发明涉及一种在移动通信系统中使用有限反馈信息的自适应发送装置及其方法。根据本发明的示例性实施例，当基站向终端发送导频信号时，终端通过使用导频信号生成信道信息，从信道信息生成附加信道信息，并发送信道信息和附加信道信道信息到基站。基站通过使用接收到的反馈信息来确定每个使用的频带分配，功率分配和调制方法，并且根据确定的方法向终端发送调制的业务数据。

7. 发明授权

US08666426B2 Adaptive transmission device using limited feedback information in a mobile communication system, and a method thereof 有权
标题翻译：在移动通信系统中使用有限反馈信息的自适应传输设备及其方法
公开(公告)号：US08666426B2
公开(公告)日：2014-03-04
申请号：US12096324
申请日：2005-12-19
申请人： Young-Jo Ko , Jae-Young Ahn , Kwang-Soon Kim , Jung-Hyoung Kwon , Keum-Chan Whang
发明人： Young-Jo Ko , Jae-Young Ahn , Kwang-Soon Kim , Jung-Hyoung Kwon , Keum-Chan Whang
IPC分类号： H04W72/00
CPC分类号： H04W72/0453 , H04L5/006 , H04L5/023 , H04L25/0204 , H04L27/2608 , H04W72/085
摘要： The present invention relates to an adaptive transmitting device using limited feedback information in a mobile communication system, and a method thereof. According to an exemplary embodiment of the present invention, when the base station transmits a pilot signal to the terminal, the terminal generates channel information by using the pilot signal, generates additional channel information from the channel information, and transmits the channel information and the additional channel information to the base station. The base station determines band allocation, power allocation, and modulation methods for each use by using received feedback information, and transmits modulated traffic data to the terminal according to the determined methods.
摘要翻译：本发明涉及一种在移动通信系统中使用有限反馈信息的自适应发送装置及其方法。根据本发明的示例性实施例，当基站向终端发送导频信号时，终端通过使用导频信号生成信道信息，从信道信息生成附加信道信息，并发送信道信息和附加信道信道信息到基站。基站通过使用接收到的反馈信息来确定每个使用的频带分配，功率分配和调制方法，并且根据确定的方法向终端发送调制的业务数据。

8. 发明授权

US07643566B2 Apparatus and method for estimating frequency offset in orthogonal frequency division multiplexing system 失效
标题翻译：在正交频分复用系统中估计频偏的装置和方法
公开(公告)号：US07643566B2
公开(公告)日：2010-01-05
申请号：US11401484
申请日：2006-04-11
申请人： Jong-Yoon Hwang , Kwang-Soon Kim , Keum-Chan Whang
发明人： Jong-Yoon Hwang , Kwang-Soon Kim , Keum-Chan Whang
IPC分类号： H04K1/10
CPC分类号： H04L27/2657 , H04L27/2676
摘要： An apparatus and method for estimating a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided. Two time domain signals are generated from one received OFDM symbol through two observation windows with different delay times. The two time domain signals are compensated for a candidate frequency offset. A discrete Fourier transform process and a phase compensation process in a frequency domain are performed. A difference between two frequency domain signals compensated for a phase difference is computed with respect to each candidate frequency offset. For all candidate frequency offsets, difference values are compared with each other. A candidate frequency offset mapped to a minimum difference value is detected as an optimal frequency offset. The frequency offset can be more exactly estimated without consuming a bandwidth and increasing hardware complexity of a receiver.
摘要翻译：提供了一种用于估计正交频分复用（OFDM）系统中的频率偏移的装置和方法。通过具有不同延迟时间的两个观察窗从一个接收的OFDM符号生成两个时域信号。对候选频率偏移补偿两个时域信号。执行频域中的离散付里叶变换处理和相位补偿处理。针对每个候选频率偏移计算补偿相位差的两个频域信号之间的差异。对于所有候选频率偏移量，将差值进行比较。映射到最小差值的候选频率偏移被检测为最佳频率偏移。可以更精确地估计频率偏移，而不消耗带宽并增加接收机的硬件复杂度。

9. 发明申请

US20060239368A1 Apparatus and method for estimating frequency offset in Orthogonal Frequency Division Multiplexing system 失效
标题翻译：正交频分复用系统估计频偏的装置及方法
公开(公告)号：US20060239368A1
公开(公告)日：2006-10-26
申请号：US11401484
申请日：2006-04-11
申请人： Jong-Yoon Hwang , Kwang-Soon Kim , Keum-Chan Whang
发明人： Jong-Yoon Hwang , Kwang-Soon Kim , Keum-Chan Whang
IPC分类号： H04K1/10
CPC分类号： H04L27/2657 , H04L27/2676
摘要： An apparatus and method for estimating a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided. Two time domain signals are generated from one received OFDM symbol through two observation windows with different delay times. The two time domain signals are compensated for a candidate frequency offset. A discrete Fourier transform process and a phase compensation process in a frequency domain are performed. A difference between two frequency domain signals compensated for a phase difference is computed with respect to each candidate frequency offset. For all candidate frequency offsets, difference values are compared with each other. A candidate frequency offset mapped to a minimum difference value is detected as an optimal frequency offset. The frequency offset can be more exactly estimated without consuming a bandwidth and increasing hardware complexity of a receiver.
摘要翻译：提供了一种用于估计正交频分复用（OFDM）系统中的频率偏移的装置和方法。通过具有不同延迟时间的两个观察窗从一个接收的OFDM符号生成两个时域信号。对候选频率偏移补偿两个时域信号。执行频域中的离散付里叶变换处理和相位补偿处理。针对每个候选频率偏移计算补偿相位差的两个频域信号之间的差异。对于所有候选频率偏移量，将差值进行比较。映射到最小差值的候选频率偏移被检测为最佳频率偏移。可以更精确地估计频率偏移，而不消耗带宽并增加接收机的硬件复杂度。

10. 再颁专利

USRE45466E1 System and method for transmitting random access data using orthogonal frequency division multiple access 有权
标题翻译：使用正交频分多址传输随机接入数据的系统和方法
公开(公告)号：USRE45466E1
公开(公告)日：2015-04-14
申请号：US13422300
申请日：2012-03-16
申请人： Soo-Jung Jung , Kwang-Soon Kim , Byung-Han Ryu
发明人： Soo-Jung Jung , Kwang-Soon Kim , Byung-Han Ryu
IPC分类号： H04J3/12 , H04J11/00
CPC分类号： H04W72/1294 , H04J11/0026 , H04L1/1671 , H04L5/023 , H04L27/261 , H04W72/048 , H04W72/14 , H04W74/002 , H04W74/006 , H04W74/0833 , H04W74/0866
摘要： Disclosed is a random access data transmission system and method using OFDMA. The system includes a scheduling ID into an access grant on a preamble for a random access, and transmits it together with an acknowledgment or a non-acknowledgment of the preamble, a base station uses the scheduling ID to notify the mobile station of a random access data transmittable time and a data transmission channel through a control channel, and the mobile station transmits a preamble in advance. After receiving a transmission assignment instruction corresponding to a scheduling ID through the control channel, the mobile station transmits random access data through an assigned channel.
摘要翻译：公开了使用OFDMA的随机接入数据传输系统和方法。该系统将调度ID包括在用于随机接入的前同步码上的接入许可中，并与前导码的确认或不确认一起发送，基站使用调度ID向移动台通知随机接入数据发送时间和通过控制信道的数据传输信道，并且移动台预先发送前同步码。在通过控制信道接收到与调度ID相对应的发送分配指令之后，移动站通过分配的信道发送随机接入数据。

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