公开(公告)号：US07627050B2

公开(公告)日：2009-12-01

申请号：US10848921

申请日：2004-05-19

申请人： Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

发明人： Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

IPC分类号： H04B7/02

CPC分类号： H04L1/0026 ,  H04B7/0626 ,  H04B7/066 ,  H04L1/0693 ,  H04W52/241 ,  H04W52/247

摘要： Disclosed is an adaptive transmitting and receiving device and method using frequency division duplexing. A transmitter transmits a preamble or a pilot to a receiver. The receiver estimates a received SNR from the preamble or pilot, determines parameters (received log likelihood ratio parameters) of determining the distribution of the received log likelihood ratio, and feeds them back to the transmitter. The transmitter adaptively determines an antenna method, a modulation method, and a transmit power according to the parameters, and adaptively transmits traffic data to the receiver according to the determined antenna method, the modulation method, and the transmit power.

摘要翻译： 公开了一种使用频分双工的自适应发射和接收装置和方法。 发射机向接收机发射前导码或导频。 接收机估计来自前置码或导频的接收到的SNR，确定确定接收到的对数似然比的分布的参数（接收对数似然比参数），并将其馈送给发射机。 发射机根据参数自适应地确定天线方法，调制方式和发射功率，并根据确定的天线方法，调制方式和发射功率自适应地将业务数据发送到接收机。

公开(公告)号：US07395494B2

公开(公告)日：2008-07-01

申请号：US10964122

申请日：2004-10-12

申请人： Sang-Hyun Lee ,  Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

发明人： Sang-Hyun Lee ,  Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

IPC分类号： G06F11/00

CPC分类号： H03M13/6362 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/1174 ,  H03M13/118

摘要： An LDPC code encoding apparatus includes: a code matrix generator for generating and transmitting a parity-check matrix comprising a combination of square matrices having a unique value on each row and column thereof; an encoding means encoding block LDPC codes according to the parity-check matrix received from the code matrix generator; and a codeword selector for puncturing the encoded result of the encoding means to generate an LDPC codeword. The code matrix generator divides an information word to be encoded into block matrices having a predetermined length to generate a vector information word. The encoding means encodes the block LDPC codes using the parity-check matrix divided into the block matrices and a Tanner graph divided into smaller graphs in correspondence to the parity-check matrix.

摘要翻译： LDPC码编码装置包括：码矩阵生成器，用于生成和发送奇偶校验矩阵，该奇偶校验矩阵包括在其每一行和每一列上具有唯一值的方阵的组合; 编码装置，根据从码矩阵发生器接收到的奇偶校验矩阵，对块LDPC码进行编码; 以及用于对编码装置的编码结果进行删截以生成LDPC码字的码字选择器。 代码矩阵发生器将要编码的信息字划分成具有预定长度的块矩阵以生成向量信息字。 编码装置使用划分为块矩阵的奇偶校验矩阵和对应于奇偶校验矩阵划分成较小图的Tanner图，对块LDPC码进行编码。

公开(公告)号：US20050149840A1

公开(公告)日：2005-07-07

申请号：US10964122

申请日：2004-10-12

申请人： Sang-Hyun Lee ,  Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

发明人： Sang-Hyun Lee ,  Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

IPC分类号： G06F11/00 ,  H03M13/00 ,  H03M13/11

CPC分类号： H03M13/6362 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/1174 ,  H03M13/118

摘要： An LDPC code encoding apparatus includes: a code matrix generator for generating and transmitting a parity-check matrix comprising a combination of square matrices having a unique value on each row and column thereof; an encoding means encoding block LDPC codes according to the parity-check matrix received from the code matrix generator; and a codeword selector for puncturing the encoded result of the encoding means to generate an LDPC codeword. The code matrix generator divides an information word to be encoded into block matrices having a predetermined length to generate a vector information word. The encoding means encodes the block LDPC codes using the parity-check matrix divided into the block matrices and a Tanner graph divided into smaller graphs in correspondence to the parity-check matrix.

摘要翻译： LDPC码编码装置包括：码矩阵生成器，用于生成和发送奇偶校验矩阵，该奇偶校验矩阵包括在其每一行和每一列上具有唯一值的方阵的组合; 编码装置，根据从码矩阵发生器接收到的奇偶校验矩阵，对块LDPC码进行编码; 以及用于对编码装置的编码结果进行删截以生成LDPC码字的码字选择器。 代码矩阵发生器将要编码的信息字划分成具有预定长度的块矩阵以生成向量信息字。 编码装置使用划分为块矩阵的奇偶校验矩阵和对应于奇偶校验矩阵划分成较小图的Tanner图，对块LDPC码进行编码。

公开(公告)号：US20050135324A1

公开(公告)日：2005-06-23

申请号：US10941197

申请日：2004-09-14

申请人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Jae-Young Ahn

发明人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Jae-Young Ahn

IPC分类号： H04J11/00 ,  H04J1/00 ,  H04L1/00 ,  H04L25/02 ,  H04L27/26

CPC分类号： H04L27/2647 ,  H04L1/005 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0224 ,  H04L25/0236 ,  H04L27/261 ,  H04L27/2626

摘要： In the resource mapping method for data transmission, a time-frequency resource of a slot interval including OFDM symbols is divided into traffic channels and shared among the subscribers, the traffic channel including resource blocks uniformly distributed in the whole transmit frequency band, the resource block including consecutive subcarriers of consecutive received symbols having at least one inserted pilot symbol. The pilot symbols and the channel-encoded and modulated data symbols are processed by time-frequency mapping according to the resource-block-based mapping method to generate received symbols. The receiver separates the received symbols by subscribers according to the resource-block-based mapping method in a frequency domain, and performs iterative channel estimation, demodulation, and decoding by using the pilot and a data reference value after decoding for each traffic channel.

摘要翻译： 在用于数据传输的资源映射方法中，将包含OFDM符号的时隙间隔的时间频率资源划分为业务信道并在用户之间共享，业务信道包括均匀分布在整个发射频带的资源块，资源块 包括具有至少一个插入导频符号的连续接收符号的连续子载波。 通过根据基于资源块的映射方法的时间 - 频率映射来处理导频符号和信道编码和调制的数据符号，以生成接收到的符号。 接收机根据频域中基于资源块的映射方法将接收到的符号分离，并且通过使用导频执行迭代信道估计，解调和解码，以及对每个业务信道进行解码之后的数据参考值。

公开(公告)号：US20050135497A1

公开(公告)日：2005-06-23

申请号：US10848921

申请日：2004-05-19

申请人： Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

发明人： Kwang-Soon Kim ,  Yun-Hee Kim ,  Jae-Young Ahn

IPC分类号： H04J11/00 ,  H04B7/005 ,  H04B7/06 ,  H04L1/00 ,  H04L1/02 ,  H04L1/06

CPC分类号： H04L1/0026 ,  H04B7/0626 ,  H04B7/066 ,  H04L1/0693 ,  H04W52/241 ,  H04W52/247

摘要： Disclosed is an adaptive transmitting and receiving device and method using frequency division duplexing. A transmitter transmits a preamble or a pilot to a receiver. The receiver estimates a received SNR from the preamble or pilot, determines parameters (received log likelihood ratio parameters) of determining the distribution of the received log likelihood ratio, and feeds them back to the transmitter. The transmitter adaptively determines an antenna method, a modulation method, and a transmit power according to the parameters, and adaptively transmits traffic data to the receiver according to the determined antenna method, the modulation method, and the transmit power.

摘要翻译： 公开了一种使用频分双工的自适应发射和接收装置和方法。 发射机向接收机发射前导码或导频。 接收机估计来自前置码或导频的接收到的SNR，确定确定接收到的对数似然比的分布的参数（接收对数似然比参数），并将其馈送给发射机。 发射机根据参数自适应地确定天线方法，调制方式和发射功率，并根据确定的天线方法，调制方式和发射功率自适应地将业务数据发送到接收机。

公开(公告)号：US07639660B2

公开(公告)日：2009-12-29

申请号：US10941197

申请日：2004-09-14

申请人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Jae-Young Ahn

发明人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Jae-Young Ahn

IPC分类号： H04J1/00

CPC分类号： H04L27/2647 ,  H04L1/005 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0224 ,  H04L25/0236 ,  H04L27/261 ,  H04L27/2626

摘要： In the resource mapping method for data transmission, a time-frequency resource of a slot interval including OFDM symbols is divided into traffic channels and shared among the subscribers, the traffic channel including resource blocks uniformly distributed in the whole transmit frequency band, the resource block including consecutive subcarriers of consecutive received symbols having at least one inserted pilot symbol. The pilot symbols and the channel-encoded and modulated data symbols are processed by time-frequency mapping according to the resource-block-based mapping method to generate received symbols. The receiver separates the received symbols by subscribers according to the resource-block-based mapping method in a frequency domain, and performs iterative channel estimation, demodulation, and decoding by using the pilot and a data reference value after decoding for each traffic channel.

摘要翻译： 在用于数据传输的资源映射方法中，将包含OFDM符号的时隙间隔的时间频率资源划分为业务信道并在用户之间共享，业务信道包括均匀分布在整个发射频带的资源块，资源块 包括具有至少一个插入导频符号的连续接收符号的连续子载波。 通过根据基于资源块的映射方法的时间 - 频率映射来处理导频符号和信道编码和调制的数据符号，以生成接收到的符号。 接收机根据频域中基于资源块的映射方法将接收到的符号分离，并且通过使用导频执行迭代信道估计，解调和解码，以及对每个业务信道进行解码之后的数据参考值。

公开(公告)号：US07453959B2

公开(公告)日：2008-11-18

申请号：US11000290

申请日：2004-11-29

申请人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Jae-Young Ahn

发明人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Jae-Young Ahn

IPC分类号： H03K9/00 ,  H04L27/00 ,  H03M13/00

CPC分类号： H04L1/0045 ,  H03M13/11 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/3723 ,  H03M13/455 ,  H03M13/612 ,  H04L25/067 ,  H04L27/2647

摘要： Disclosed is an apparatus and method for erasure detection and soft-decision decoding in a cellular system receiver. In the present invention, a complex channel gain and a noise variance of a received symbol from a cellular system transmitter are estimated, and an erasure symbol (a symbol with high power interference) is detected by comparing a threshold value according to the estimated complex channel gain or noise variance with power of the received symbol. Log-likelihood ratios corresponding to constituent bits of the detected erasure symbols are allowed to be 0, and the log-likelihood ratios of the constituent bits of the other received symbols are calculated. A soft-decision decoding operation of received bits is performed with the calculated log-likelihood ratios.

摘要翻译： 公开了一种用于蜂窝系统接收机中的擦除检测和软判决解码的装置和方法。 在本发明中，估计来自蜂窝系统发射机的接收符号的复信道增益和噪声方差，并且通过比较根据估计的复信道的阈值来检测擦除符号（具有高功率干扰的符号） 增益或噪声方差与接收到的符号的功率。 对应于检测到的擦除符号的构成比特的对数似然比被允许为0，并且计算其他接收符号的构成比特的对数似然比。 利用所计算的对数似然比来执行接收比特的软判决解码操作。

公开(公告)号：US20050278609A1

公开(公告)日：2005-12-15

申请号：US11000290

申请日：2004-11-29

申请人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Jae-Young Ahn

发明人： Yun-Hee Kim ,  Kwang-Soon Kim ,  Sang-Hyun Lee ,  Jae-Young Ahn

IPC分类号： H03D1/00 ,  H03M13/00 ,  H03M13/11 ,  H03M13/29 ,  H03M13/31 ,  H03M13/45 ,  H04L1/00 ,  H04L25/06 ,  H04L27/06 ,  H04L27/26

CPC分类号： H04L1/0045 ,  H03M13/11 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/3723 ,  H03M13/455 ,  H03M13/612 ,  H04L25/067 ,  H04L27/2647

摘要： Dislosed is an apparatus and method for erasure detection and soft-decision decoding in a cellular system receiver. In the present invention, a complex channel gain and a noise variance of a received symbol from a cellular system transmitter are estimated, and an erasure symbol (a symbol with high power interference) is detected by comparing a threshold value according to the estimated complex channel gain or noise variance with power of the received symbol. Log-likelihood ratios corresponding to constituent bits of the detected erasure symbols are allowed to be 0, and the log-likelihood ratios of the constituent bits of the other received symbols are calculated. A soft-decision decoding operation of received bits is performed with the calculated log-likelihood ratios.

摘要翻译： Dislosed是用于蜂窝系统接收机中的擦除检测和软判决解码的装置和方法。 在本发明中，估计来自蜂窝系统发射机的接收符号的复信道增益和噪声方差，并且通过比较根据估计的复信道的阈值来检测擦除符号（具有高功率干扰的符号） 增益或噪声方差与接收到的符号的功率。 对应于检测到的擦除符号的构成比特的对数似然比被允许为0，并且计算其他接收符号的构成比特的对数似然比。 利用所计算的对数似然比来执行接收比特的软判决解码操作。

公开(公告)号：US07848296B2

公开(公告)日：2010-12-07

申请号：US11438667

申请日：2006-05-23

申请人： Hee-Soo Lee ,  Jae-Young Ahn ,  Young-Jo Ko ,  Du-Ho Rhee ,  Kwang-Soon Kim

发明人： Hee-Soo Lee ,  Jae-Young Ahn ,  Young-Jo Ko ,  Du-Ho Rhee ,  Kwang-Soon Kim

IPC分类号： H04Q7/00

CPC分类号： H04W52/262 ,  H04B17/24 ,  H04B17/26 ,  H04B17/336 ,  H04B17/373 ,  H04L1/0026 ,  H04L25/0232 ,  H04L27/2601 ,  H04W52/226 ,  H04W52/247 ,  H04W52/346

摘要： Provided are an apparatus and method for generating channel information and apparatus and method for adaptive transmission employing the same. The channel information generation apparatus comprises an estimator for estimating current channel information of a multi-carrier received signal for each path, a short-period channel information generator for predicting channel information after a predetermined minimum transmission delay time based on the current channel information estimated by the estimator to generate short-period channel information, and a long-period channel information generator for deriving statistic information of error between the channel information predicted by the short-period channel information generator and actual channel information at the time of transmission to produce long-period channel information. The invention is applied to mobile communication systems using multi-carrier.

摘要翻译： 提供一种用于产生信道信息的装置和方法，以及采用该信道信息的自适应传输的装置和方法。 信道信息生成装置包括：估计器，用于估计每个路径的多载波接收信号的当前信道信息;短周期信道信息发生器，用于基于由当前信道信息估计的预定最小传输延迟时间来预测信道信息; 用于产生短周期信道信息的估计器和用于导出由短周期信道信息发生器预测的信道信息与传输时的实际信道信息之间的误差的统计信息的长周期信道信息发生器， 期间频道信息。 本发明应用于使用多载波的移动通信系统。

公开(公告)号：US20070127359A1

公开(公告)日：2007-06-07

申请号：US10579892

申请日：2004-09-08

申请人： Jae-Young Ahn ,  Kwang-Soon Kim

发明人： Jae-Young Ahn ,  Kwang-Soon Kim

IPC分类号： H04J1/00 ,  H04J11/00

CPC分类号： H04L5/023 ,  H04L27/2608 ,  H04W72/06

摘要： Disclosed is a method for partitioning resource spaces, and allocating physical channels and power in an OFDMA-based cellular system. A resource within a slot is partitioned into resource spaces in common in a plurality of adjacent cells, and the partitioned resource spaces are partitioned into resource sets according to sizes of physical channels in the adjacent cells. The physical channels classified by predetermined characteristics are respectively assigned to the partitioned resource sets within the resource space. Further, the resource space for transmitting traffic channels between two different cells is partitioned into resource spaces so that the traffic channels in the same subspace may be collided with each other, and a power control is applied between the collided channels to control the interference from the adjacent cells.

摘要翻译： 公开了一种在基于OFDMA的蜂窝系统中分配资源空间以及分配物理信道和功率的方法。 时隙内的资源在多个相邻小区中共同划分为资源空间，并且根据相邻小区中的物理信道的大小将划分的资源空间划分为资源集。 通过预定特性分类的物理信道分别分配给资源空间内的分区资源集。 此外，用于在两个不同小区之间传输业务信道的资源空间被划分为资源空间，使得相同子空间中的业务信道可能相互冲突，并且在冲突信道之间应用功率控制以控制来自 相邻细胞。