公开(公告)号：US07746936B2

公开(公告)日：2010-06-29

申请号：US11743147

申请日：2007-05-02

申请人： Dong-Seung Kwon ,  Young-Seog Song ,  In-Kyeong Choi ,  Chung-Yong Lee ,  Myeong-Cheol Shin ,  Myoung-Seog Kim ,  Seung-Joon Lee

发明人： Dong-Seung Kwon ,  Young-Seog Song ,  In-Kyeong Choi ,  Chung-Yong Lee ,  Myeong-Cheol Shin ,  Myoung-Seog Kim ,  Seung-Joon Lee

IPC分类号： H04B14/04 ,  H04L7/02

CPC分类号： H04B7/0658 ,  H04B7/0634 ,  H04B7/0639

摘要： In a method for optimizing a codebook including a quantized channel between a base station transmitter and a portable terminal: a) select the codebook to be optimized; b) a steepest descent algorithm is applied to respective codewords of the codebook selected in a), wherein the codewords are transformed so that a correlation between the codewords is minimized, and a function indicating the correlation between the codewords is differentiated and is multiplied by a predetermined step size and is used for a parameter for generating a new codeword in the steepest descent algorithm; c) it is determined whether the codebook including the codewords transformed in b) is optimized; and d) the codebook is stored when it is determined in c) that the codebook is optimized.

摘要翻译： 一种用于优化包括基站发射机和便携式终端之间的量化信道的码本的方法：a）选择要优化的码本; b）将最陡下降算法应用于在a）中选择的码本的相应码字，其中对码字进行变换，使得码字之间的相关性最小化，并且指示码字之间的相关性的函数被区分，并乘以 用于在最速下降算法中生成新码字的参数; c）确定包括在b）中变换的码字的码本是否被优化; 以及d）当在c）中确定码本被优化时，存储码本。

公开(公告)号：US20080240276A1

公开(公告)日：2008-10-02

申请号：US11667711

申请日：2005-08-10

申请人： Young-Seog Song ,  Seong-Rag Kim ,  In-Kyeong Choi ,  Choong-ll Yeh ,  Seung-Joon Lee ,  Hyoung-Soo Lim ,  Kwang-Jae Lim ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Chung-Yong Lee ,  Myeong-Cheol Shin

发明人： Young-Seog Song ,  Seong-Rag Kim ,  In-Kyeong Choi ,  Choong-ll Yeh ,  Seung-Joon Lee ,  Hyoung-Soo Lim ,  Kwang-Jae Lim ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Chung-Yong Lee ,  Myeong-Cheol Shin

IPC分类号： H04L5/12 ,  H04L27/28

CPC分类号： H04B7/061 ,  H04B7/0669 ,  H04B7/0691 ,  H04B7/08 ,  H04L1/0003 ,  H04L1/0637 ,  H04L1/0675

摘要： The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter (100) and a receiver (200). The transmitter (100) includes N transmit antennas (130-1, 130-4) that are more than M tansrni antennas (130-1, 130-3) used for transmitting a signal to space channel, selects the M transmit antennas (130-1, 130-3) among the N transmit antennas (130-3 130-4), and transmits symbol by space-time encoding the symbol. The receiver (200) includes M receive antenna (120-1, 210-2) for receiving a signal from the space channel, detects an information symbol by using the signal received through the receive antenna (210-1, 210-2), generates transmit antenna selection information for selecting M transmit antennas (130-1, 130-3) among transmit antennas (i30-1, . . . 7130-4) with reference to a channel estimate, and returns the information to the transmitter.

摘要翻译： 本发明涉及用于增强传输性能的多输入多输出（MIMO）系统。 MIMO系统使用时空编码和发射天线选择方法，并且包括发射机（100）和接收机（200）。 发射机（100）包括比用于将信号发射到空间信道的M多个天线（130-1,30-3）多的N个发射天线（130-1,140-4），选择M个发射天线（130 -1,130-3），并且通过对该符号进行时空编码来发送符号。 接收器（200）包括用于从空间信道接收信号的M个接收天线（120-1,210-2），通过使用通过接收天线（210-1,210-2）接收的信号来检测信息符号， 生成用于参考信道估计在发射天线（i 30-1，...，7130-4）中选择M个发射天线（130-1,130-3）的发射天线选择信息，并将该信息返回给发射机。

公开(公告)号：US08121208B2

公开(公告)日：2012-02-21

申请号：US11667711

申请日：2005-08-10

申请人： Young-Seog Song ,  Seong-Rag Kim ,  In-Kyeong Choi ,  Choong-Il Yeh ,  Seung-Joon Lee ,  Hyoung-Soo Lim ,  Kwang-Jae Lim ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Chung-Yong Lee ,  Myeong-Cheol Shin

发明人： Young-Seog Song ,  Seong-Rag Kim ,  In-Kyeong Choi ,  Choong-Il Yeh ,  Seung-Joon Lee ,  Hyoung-Soo Lim ,  Kwang-Jae Lim ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Chung-Yong Lee ,  Myeong-Cheol Shin

IPC分类号： H04L5/12

CPC分类号： H04B7/061 ,  H04B7/0669 ,  H04B7/0691 ,  H04B7/08 ,  H04L1/0003 ,  H04L1/0637 ,  H04L1/0675

摘要： The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter (100) and a receiver (200). The transmitter (100) includes N transmit antennas (130-1, 130-4) that are more than M transmit antennas (130-1, 130-3) used for transmitting a signal to space channel, selects the M transmit antennas (130-1, 130-3) among the N transmit antennas (130-3 130-4), and transmits symbol by space-time encoding the symbol. The receiver (200) includes M receive antenna (120-1, 210-2) for receiving a signal from the space channel, detects an information symbol by using the signal received through the receive antenna (210-1, 210-2), generates transmit antenna selection information for selecting M transmit antennas (130-1, 130-3) among transmit antennas (i30-1, . . . 7130-4) with reference to a channel estimate, and returns the information to the transmitter.

摘要翻译： 本发明涉及用于增强传输性能的多输入多输出（MIMO）系统。 MIMO系统使用时空编码和发射天线选择方法，并且包括发射机（100）和接收机（200）。 发射机（100）包括比用于将信号发射到空间信道的M个发射天线（130-1,130-3）多的N个发射天线（130-1,140-4），选择M个发射天线 -1,130-3），并且通过对该符号进行空时编码来发送符号。 接收器（200）包括用于从空间信道接收信号的M个接收天线（120-1,210-2），通过使用通过接收天线（210-1,210-2）接收的信号来检测信息符号， 生成发送天线选择信息，用于参照信道估计来选择发射天线（i30-1，...，...，7130-4）中的M个发射天线（130-1,130-3），并将该信息返回给发射机。

公开(公告)号：US08509336B2

公开(公告)日：2013-08-13

申请号：US12740896

申请日：2008-06-24

申请人： Choong il Yeh ,  In-Kyeong Choi ,  Young Seog Song ,  Seung Joon Lee ,  Byung-Jae Kwak ,  Ji Hyung Kim ,  Dong Seung Kwon ,  Joon Doo Kim ,  Ji Won Kang ,  Chung Yong Lee

发明人： Choong il Yeh ,  In-Kyeong Choi ,  Young Seog Song ,  Seung Joon Lee ,  Byung-Jae Kwak ,  Ji Hyung Kim ,  Dong Seung Kwon ,  Joon Doo Kim ,  Ji Won Kang ,  Chung Yong Lee

IPC分类号： H04L1/02

CPC分类号： H04B7/0413 ,  H04B7/0465 ,  H04L25/03343 ,  H04L2025/0342 ,  H04L2025/03426

摘要： Disclosed is a transmitting/receiving method in a multi-user multiple-input multiple-output (MU-MIMO) channel. The transmitting method includes: performing QR decomposition on a Hermitian transpose matrix of a channel matrix to obtain a first matrix and a second matrix as a triangular matrix; obtaining a preprocessing matrix by using the first matrix; and forming an effective channel based on the preprocessing matrix by a block triangulation technique.

摘要翻译： 公开了一种多用户多输入多输出（MU-MIMO）信道中的发送/接收方法。 发送方法包括：对信道矩阵的厄米转置矩阵执行QR分解以获得第一矩阵和第二矩阵作为三角矩阵; 通过使用第一矩阵获得预处理矩阵; 并通过块三角测量技术形成基于预处理矩阵的有效信道。

公开(公告)号：US20100310001A1

公开(公告)日：2010-12-09

申请号：US12740896

申请日：2008-06-24

申请人： Choong il Yeh ,  In-Kyeong Choi ,  Young Seog Song ,  Seung Joon Lee ,  Byung-Jae Kwak ,  Ji Hyung Kim ,  Dong Seung Kwon ,  Joon Doo Kim ,  Ji Won Kang ,  Chung Yong Lee

发明人： Choong il Yeh ,  In-Kyeong Choi ,  Young Seog Song ,  Seung Joon Lee ,  Byung-Jae Kwak ,  Ji Hyung Kim ,  Dong Seung Kwon ,  Joon Doo Kim ,  Ji Won Kang ,  Chung Yong Lee

IPC分类号： H04L1/02

CPC分类号： H04B7/0413 ,  H04B7/0465 ,  H04L25/03343 ,  H04L2025/0342 ,  H04L2025/03426

摘要： Disclosed is a transmitting/receiving method in a multi-user multiple-input multiple-output (MU-MIMO) channel. The transmitting method includes: performing QR decomposition on a Hermitian transpose matrix of a channel matrix to obtain a first matrix and a second matrix as a triangular matrix; obtaining a preprocessing matrix by using the first matrix; and forming an effective channel based on the preprocessing matrix by a block triangulation technique.

摘要翻译： 公开了一种多用户多输入多输出（MU-MIMO）信道中的发送/接收方法。 发送方法包括：对信道矩阵的厄米转置矩阵执行QR分解以获得第一矩阵和第二矩阵作为三角矩阵; 通过使用第一矩阵获得预处理矩阵; 并通过块三角测量技术形成基于预处理矩阵的有效信道。

公开(公告)号：US20080225975A1

公开(公告)日：2008-09-18

申请号：US11574725

申请日：2005-02-28

申请人： Seung-Joon Lee ,  Choong-Il Yeh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Hyoung-Soo Lim ,  In-Kyeong Choi ,  Jong-Ee Oh ,  Kwang-Jae Lim ,  Seong-Rag Kim ,  Young-Seog Song ,  Yu-Ro Lee ,  Seong-Keun Oh ,  Moon-Ii Lee

发明人： Seung-Joon Lee ,  Choong-Il Yeh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Hyoung-Soo Lim ,  In-Kyeong Choi ,  Jong-Ee Oh ,  Kwang-Jae Lim ,  Seong-Rag Kim ,  Young-Seog Song ,  Yu-Ro Lee ,  Seong-Keun Oh ,  Moon-Ii Lee

IPC分类号： H04B7/02

CPC分类号： H04B7/02 ,  H04B7/0697 ,  H04L1/0612

摘要： A space-time code used for a transmitter to transmit a plurality of data symbols to a receiver in a MIMO system, the space-time code including a code word matrix for transmitting an amount of data symbols corresponding to a product of the number of transmit antennas and a spatial multiplexing rate during one block period, wherein a row index indicates combined signals transmitted through different transmit antennas and a column index indicates time slots that correspond to the number of transmit antennas, and wherein the number of data symbols allocated to each transmit antenna in a code block corresponds to the spatial multiplexing rate, and the data symbols are combined by different combining coefficients for each transmit antenna at every time slot, and simultaneously transmitted through different transmit antennas, and each transmit antenna transmits a different set of data symbols at every time slot.

摘要翻译： 用于发射机的空时码将多个数据符号发送到MIMO系统中的接收机，所述时空码包括用于发送对应于发射次数的乘积的数据符号量的码字矩阵 天线和一个块周期内的空间多路复用率，其中行索引表示通过不同发射天线发射的组合信号，列索引指示对应于发射天线数的时隙，并且其中分配给每个发射的数据符号数 代码块中的天线对应于空间复用速率，并且通过在每个时隙对每个发射天线的不同组合系数组合数据符号，并且同时通过不同的发射天线发射，并且每个发射天线发射不同的数据符号集合 在每个时间段

公开(公告)号：US20080081669A1

公开(公告)日：2008-04-03

申请号：US11743147

申请日：2007-05-02

申请人： Dong-Seung Kwon ,  Young-Seog Song ,  In-Kyeong Choi ,  Chungyong Lee ,  Myeongcheol Shin ,  Myoung-Seok Kim ,  Seung-Joon Lee

发明人： Dong-Seung Kwon ,  Young-Seog Song ,  In-Kyeong Choi ,  Chungyong Lee ,  Myeongcheol Shin ,  Myoung-Seok Kim ,  Seung-Joon Lee

IPC分类号： H04B1/38

CPC分类号： H04B7/0658 ,  H04B7/0634 ,  H04B7/0639

摘要： In a method for optimizing a codebook including a quantized channel between a base station transmitter and a portable terminal: a) select the codebook to be optimized; b) a steepest descent algorithm is applied to respective codewords of the codebook selected in a), wherein the codewords are transformed so that a correlation between the codewords is minimized, and a function indicating the correlation between the codewords is differentiated and is multiplied by a predetermined step size and is used for a parameter for generating a new codeword in the steepest descent algorithm; c) it is determined whether the codebook including the codewords transformed in b) is optimized; and d) the codebook is stored when it is determined in c) that the codebook is optimized.

摘要翻译： 一种用于优化包括基站发射机和便携式终端之间的量化信道的码本的方法：a）选择要优化的码本; b）将最陡下降算法应用于在a）中选择的码本的相应码字，其中对码字进行变换，使得码字之间的相关性最小化，并且指示码字之间的相关性的函数被区分，并乘以 用于在最速下降算法中生成新码字的参数; c）确定包括在b）中变换的码字的码本是否被优化; 以及d）当在c）中确定码本被优化时，存储码本。

公开(公告)号：US07903753B2

公开(公告)日：2011-03-08

申请号：US11574725

申请日：2005-02-28

申请人： Seung-Joon Lee ,  Choong-Il Yeh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Hyoung-Soo Lim ,  In-Kyeong Choi ,  Jong-Ee Oh ,  Kwang-Jae Lim ,  Seong-Rag Kim ,  Young-Seog Song ,  Yu-Ro Lee ,  Seong-Keun Oh ,  Moon-Il Lee

发明人： Seung-Joon Lee ,  Choong-Il Yeh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Hyoung-Soo Lim ,  In-Kyeong Choi ,  Jong-Ee Oh ,  Kwang-Jae Lim ,  Seong-Rag Kim ,  Young-Seog Song ,  Yu-Ro Lee ,  Seong-Keun Oh ,  Moon-Il Lee

IPC分类号： H04B7/02

CPC分类号： H04B7/02 ,  H04B7/0697 ,  H04L1/0612

摘要： A space-time code used for a transmitter to transmit a plurality of data symbols to a receiver in a MIMO system, the space-time code including a code word matrix for transmitting an amount of data symbols corresponding to a product of the number of transmit antennas and a spatial multiplexing rate during one block period, wherein a row index indicates combined signals transmitted through different transmit antennas and a column index indicates time slots that correspond to the number of transmit antennas, and wherein the number of data symbols allocated to each transmit antenna in a code block corresponds to the spatial multiplexing rate, and the data symbols are combined by different combining coefficients for each transmit antenna at every time slot, and simultaneously transmitted through different transmit antennas, and each transmit antenna transmits a different set of data symbols at every time slot.

摘要翻译： 用于发射机的空时码将多个数据符号发送到MIMO系统中的接收机，所述时空码包括用于发送对应于发射次数的乘积的数据符号量的码字矩阵 天线和一个块周期内的空间多路复用率，其中行索引表示通过不同发射天线发射的组合信号，列索引指示对应于发射天线数的时隙，并且其中分配给每个发射的数据符号数 代码块中的天线对应于空间复用速率，并且通过在每个时隙对每个发射天线的不同组合系数组合数据符号，并且同时通过不同的发射天线发射，并且每个发射天线发射不同的数据符号集合 在每个时间段

公开(公告)号：US07920646B2

公开(公告)日：2011-04-05

申请号：US11722049

申请日：2005-12-21

申请人： Choong-Il Yeh ,  Young-Seog Song ,  In-Kyeong Choi ,  Dong-Seung Kwon

发明人： Choong-Il Yeh ,  Young-Seog Song ,  In-Kyeong Choi ,  Dong-Seung Kwon

IPC分类号： H04L27/00

CPC分类号： H04B7/0695 ,  H04B7/0634

摘要： The present invention relates to a system for selecting a switched beam for supplying a maximum received power to a subscriber station, and a method thereof. The number of switched beams used by a base station is limited, and a weight value vector for forming the switched beam is predefined. The subscriber station uses a pilot signal for discerning transmitting antennas to estimate channel values for the respective transmitting antennas, and uses the channel values and the predefined weight value vectors to determine a switched beam for supplying a maximum signal-to-noise ratio (SNR). The subscriber station notifies the base station of an identifier of a selected beam by using a feedback channel, and the base station uses the switched beam to transmit traffic data.

摘要翻译： 本发明涉及一种用于选择向用户站提供最大接收功率的切换波束的系统及其方法。 基站使用的切换波束的数量是有限的，并且预定了用于形成切换波束的权重值向量。 用户站使用导频信号来识别发射天线以估计各个发射天线的信道值，并且使用信道值和预定权重值向量来确定用于提供最大信噪比（SNR）的切换波束， 。 用户台通过使用反馈信道向基站通知所选波束的标识符，并且基站使用切换波束来传输业务数据。

公开(公告)号：US20080095251A1

公开(公告)日：2008-04-24

申请号：US11722049

申请日：2005-12-21

申请人： Choong-Il Yeh ,  Young-Seog Song ,  In-Kyeong Choi ,  Dong-Seung Kwon

发明人： Choong-Il Yeh ,  Young-Seog Song ,  In-Kyeong Choi ,  Dong-Seung Kwon

IPC分类号： H04L27/28

CPC分类号： H04B7/0695 ,  H04B7/0634

摘要： The present invention relates to a system for selecting a switched beam for supplying a maximum received power to a subscriber station, and a method thereof. The number of switched beams used by a base station is limited, and a weight value vector for forming the switched beam is predefined. The subscriber station uses a pilot signal for discerning transmitting antennas to estimate channel values for the respective transmitting antennas, and uses the channel values and the predefined weight value vectors to determine a switched beam for supplying a maximum signal-to-noise ratio (SNR). The subscriber station notifies the base station of an identifier of a selected beam by using a feedback channel, and the base station uses the switched beam to transmit traffic data.

摘要翻译： 本发明涉及一种用于选择向用户站提供最大接收功率的切换波束的系统及其方法。 基站使用的切换波束的数量是有限的，并且预定了用于形成切换波束的权重值向量。 用户站使用导频信号来识别发射天线以估计各个发射天线的信道值，并且使用信道值和预定权重值向量来确定用于提供最大信噪比（SNR）的切换波束， 。 用户台通过使用反馈信道向基站通知所选波束的标识符，并且基站使用切换波束来传输业务数据。