公开(公告)号：US20070133707A1

公开(公告)日：2007-06-14

申请号：US11603651

申请日：2006-11-22

申请人： In-Soo Hwang ,  Cheol-Woo You ,  Seung-Hoon Nam ,  Yung-Soo Kim ,  Tarokh Vahid

发明人： In-Soo Hwang ,  Cheol-Woo You ,  Seung-Hoon Nam ,  Yung-Soo Kim ,  Tarokh Vahid

IPC分类号： H04L1/02

CPC分类号： H04B7/0417 ,  H04B7/0602 ,  H04B7/061 ,  H04B7/0639 ,  H04B7/0802

摘要： Disclosed are an apparatus and a method for determining a transmit/receive antenna in a Multiple Input Multiple Output (MIMO) communication system. At least one sub-channel matrix including transmit antenna information and receive antenna information is generated. From the at least one sub-channel matrix, a sub-channel matrix having a maximum value Frobenius norm is determined. The transmit and receive antenna information are then extracted from the determined sub-channel matrix.

摘要翻译： 公开了一种用于在多输入多输出（MIMO）通信系统中确定发射/接收天线的装置和方法。 生成包括发送天线信息和接收天线信息的至少一个子信道矩阵。 从至少一个子信道矩阵确定具有最大值Frobenius范数的子信道矩阵。 然后从确定的子信道矩阵中提取发送和接收天线信息。

公开(公告)号：US20070133480A1

公开(公告)日：2007-06-14

申请号：US11603652

申请日：2006-11-22

申请人： Seung-Hoon Nam ,  Cheol-Woo You ,  In-Soo Hwang ,  Yung-Soo Kim ,  Tarokh Vahid

发明人： Seung-Hoon Nam ,  Cheol-Woo You ,  In-Soo Hwang ,  Yung-Soo Kim ,  Tarokh Vahid

IPC分类号： H04B7/216

CPC分类号： H04L1/0021 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025

摘要： A system and method are provided for controlling a data rate in a communication system. A transmitter sets threshold values for classifying Modulation and Coding Scheme (MCS) levels. When receiving information about an MCS level desired to be used in the receiver, the transmitter sets an MCS level to be actually used in the receiver and transmits information about the set MCS level to the receiver. When detecting that the information is to be transmitted to the transmitter, the receiver computes instantaneous link capacity using a channel estimation result, sets an MCS level mapped to the instantaneous link capacity, and transmits information about the set MCS level to the transmitter. The receiver receives the information about the MCS level to be actually used from the transmitter.

摘要翻译： 提供了一种用于控制通信系统中的数据速率的系统和方法。 发射机设置用于分类调制和编码方案（MCS）级别的阈值。 当接收到有关希望在接收机中使用的MCS级别的信息时，发射机设置在接收机中实际使用的MCS级别，并将关于所设置的MCS级别的信息发送给接收机。 当检测到要将信息发送到发射机时，接收机使用信道估计结果计算瞬时链路容量，设置映射到瞬时链路容量的MCS级别，并将关于所设置的MCS级别的信息发送到发射机。 接收机从发射机接收关于实际使用的MCS级别的信息。

公开(公告)号：US07808954B2

公开(公告)日：2010-10-05

申请号：US11603652

申请日：2006-11-22

申请人： Seung-Hoon Nam ,  Cheol-Woo You ,  In-Soo Hwang ,  Yung-Soo Kim ,  Tarokh Vahid

发明人： Seung-Hoon Nam ,  Cheol-Woo You ,  In-Soo Hwang ,  Yung-Soo Kim ,  Tarokh Vahid

IPC分类号： H04B7/216

CPC分类号： H04L1/0021 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025

摘要： A system and method are provided for controlling a data rate in a communication system. A transmitter sets threshold values for classifying Modulation and Coding Scheme (MCS) levels. When receiving information about an MCS level desired to be used in the receiver, the transmitter sets an MCS level to be actually used in the receiver and transmits information about the set MCS level to the receiver. When detecting that the information is to be transmitted to the transmitter, the receiver computes instantaneous link capacity using a channel estimation result, sets an MCS level mapped to the instantaneous link capacity, and transmits information about the set MCS level to the transmitter. The receiver receives the information about the MCS level to be actually used from the transmitter.

摘要翻译： 提供了一种用于控制通信系统中的数据速率的系统和方法。 发射机设置用于分类调制和编码方案（MCS）级别的阈值。 当接收到有关希望在接收机中使用的MCS级别的信息时，发射机设置在接收机中实际使用的MCS级别，并将关于所设置的MCS级别的信息发送给接收机。 当检测到要将信息发送到发射机时，接收机使用信道估计结果计算瞬时链路容量，设置映射到瞬时链路容量的MCS级别，并将关于所设置的MCS级别的信息发送到发射机。 接收机从发射机接收关于实际使用的MCS级别的信息。

公开(公告)号：US20070230628A1

公开(公告)日：2007-10-04

申请号：US11716343

申请日：2007-03-09

申请人： Cheol-Woo You ,  Dong-Ho Kim ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Hyun-Cheol Park ,  Nam-Shik Kim

发明人： Cheol-Woo You ,  Dong-Ho Kim ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Hyun-Cheol Park ,  Nam-Shik Kim

IPC分类号： H04L27/06 ,  H04L1/02

CPC分类号： H04L1/06 ,  H04L25/03006 ,  H04L2025/03426

摘要： An apparatus is provided for detecting a signal in a communication system using a Multiple Input Multiple Output (MIMO) scheme. The signal detection apparatus includes a detector for generating second matrixes by extending a first matrix composed of channel response vectors, generating specific matrixes by decomposing the second matrixes, generating a lattice point of vectors constituting the second matrixes, estimating a signal using the generated specific matrixes and lattice point, and detecting the estimated signal as a received signal if the estimated signal has a value within a predetermined allowable range.

摘要翻译： 提供一种用于在使用多输入多输出（MIMO）方案的通信系统中检测信号的装置。 信号检测装置包括：检测器，用于通过扩展由信道响应向量组成的第一矩阵来产生第二矩阵，通过分解第二矩阵产生特定矩阵，产生构成第二矩阵的向量的格点，使用所生成的特定矩阵估计信号 并且如果所估计的信号具有在预定允许范围内的值，则将所估计的信号作为接收信号进行检测。

公开(公告)号：US07356090B2

公开(公告)日：2008-04-08

申请号：US10691903

申请日：2003-10-23

申请人： Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung

发明人： Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung

IPC分类号： H04L27/00 ,  H04L1/02 ,  H04B7/02 ,  H04B1/38

CPC分类号： H04L1/0054 ,  H04L1/0618

摘要： An apparatus uses transmission antenna diversity to compensate for fading. An encoder according to a first embodiment forms 4 combinations each including 3 symbols so that 4 input symbols should be transmitted only once at each antenna and each time interval, and delivers the combinations to the 3 transmission antennas for 4 time intervals, and two or more symbols selected from the 4 input symbols are phase-rotated by predetermined phase values before being transmitted via the transmission antennas. An encoder according to a second embodiment forms 3 combinations each including 3 symbols so that 3 input symbols should be transmitted only once at each antenna and each time interval, and delivers the combinations to the 3 transmission antennas for 3 time intervals, and two or more symbols selected from the 3 input symbols are phase-rotated by predetermined phase values before being transmitted via the transmission antennas. In this way, the apparatus secures a maximum diversity order and copes with fast fading by reducing transmission latency.

摘要翻译： 一种装置使用发射天线分集来补偿衰落。 根据第一实施例的编码器形成4个组合，每个组合包括3个符号，使得4个输入符号在每个天线和每个时间间隔只应发送一次，并将组合传送到3个发射天线4个时间间隔，并且两个或更多个 从4个输入符号中选择的符号在经由发送天线发送之前被相位旋转预定相位值。 根据第二实施例的编码器形成3个组合，每个组合包括3个符号，使得3个输入符号在每个天线和每个时间间隔只应发送一次，并且将这3个组合传送到3个发射天线3个时间间隔，并且两个或更多个 从3个输入符号中选择的符号在经由发送天线发送之前被相位旋转预定相位值。 以这种方式，设备确保最大分集顺序，并通过减少传输延迟来应对快速衰落。

公开(公告)号：US20080075207A1

公开(公告)日：2008-03-27

申请号：US11773257

申请日：2007-07-03

申请人： Chan-Soo HWANG ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Chan-Soo HWANG ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： H03D1/04

CPC分类号： H04L1/065 ,  H04L1/0069 ,  H04L1/0625 ,  H04L1/0631

摘要： A mobile communication system includes at least three transmission antennas of first to third transmission antennas, and uses an overlapped antenna scheme for grouping the first and second transmission antennas into a first transmission antenna group and grouping the second and third transmission antennas into a second transmission antenna group. First and second modulators modulate L information bit streams to be transmitted through the first transmission antenna group and output first and second modulation symbol streams. Third and fourth modulators modulate L other information bit streams to be transmitted through the second transmission antenna group and output third and fourth symbol streams. First to fourth puncturers puncture at least one modulation symbol in a predetermined position among the first to fourth modulation symbol streams. A multiplexer transmits a modulation symbol stream output from the first puncturer through the first transmission antenna, transmits modulation symbol streams output from the second and third puncturers through the second transmission antenna after summation, and transmits a modulation symbol stream output from the third puncturer through the third transmission antenna.

摘要翻译： 移动通信系统包括第一至第三发射天线的至少三个发射天线，并且使用重叠的天线方案将第一和第二发射天线分组成第一发射天线组，并将第二和第三发射天线分组成第二发射天线 组。 第一和第二调制器调制通过第一发送天线组发送的L个信息比特流并输出第一和第二调制符号流。 第三和第四调制器调制通过第二发送天线组发送的另外的信息比特流并输出第三和第四符号流。 第一至第四穿孔器在第一至第四调制符号流中的预定位置中至少刺穿一个调制符号。 复用器通过第一发送天线发送从第一穿孔器输出的调制符号流，在求和之后通过第二发送天线发送从第二和第三穿孔器输出的调制符号流，并且从第三穿孔器输出的调制符号流通过 第三发射天线。

公开(公告)号：US20050135499A1

公开(公告)日：2005-06-23

申请号：US11020285

申请日：2004-12-23

申请人： Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung ,  Vahid Tarokh ,  Chan-Soo Hwang

发明人： Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung ,  Vahid Tarokh ,  Chan-Soo Hwang

IPC分类号： H04B7/06 ,  H03M13/00 ,  H04L1/02 ,  H04L1/06 ,  H04L27/00

CPC分类号： H04L1/0643

摘要： A differential STBC transmitting/receiving apparatus in a multiple antenna system using eight or less transmit antennas is provided. In the differential STBC transmitting apparatus, a symbol mapper receives binary data and generates a number of symbols from the binary data, each symbol having a number of bits. A space-time block encoder generates an STBC by encoding the symbols. A differential processor differentially encodes the STBC through feedback and delay. A distribution matrix processor substitutes the differentially coded STBC into a distribution matrix preset according to the number of transmit antennas, and outputs the differential STBC code of the distribution matrix to the transmit antennas.

摘要翻译： 提供了一种使用八个或更少的发射天线的多天线系统中的差分STBC发射/接收装置。 在差分STBC发送装置中，符号映射器接收二进制数据并从二进制数据生成多个符号，每个符号具有多个位。 时空块编码器通过对符号进行编码来生成STBC。 差分处理器通过反馈和延迟对STBC进行差分编码。 分配矩阵处理器根据发射天线的数量将差分编码的STBC替换为预设的分布矩阵，并将分布矩阵的差分STBC码输出到发射天线。

公开(公告)号：US07864876B2

公开(公告)日：2011-01-04

申请号：US11020285

申请日：2004-12-23

申请人： Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung ,  Vahid Tarokh ,  Chan-Soo Hwang

发明人： Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung ,  Vahid Tarokh ,  Chan-Soo Hwang

IPC分类号： H04B7/02

CPC分类号： H04L1/0643

摘要： A differential STBC transmitting/receiving apparatus in a multiple antenna system using eight or less transmit antennas is provided. In the differential STBC transmitting apparatus, a symbol mapper receives binary data and generates a number of symbols from the binary data, each symbol having a number of bits. A space-time block encoder generates an STBC by encoding the symbols. A differential processor differentially encodes the STBC through feedback and delay. A distribution matrix processor substitutes the differentially coded STBC into a distribution matrix preset according to the number of transmit antennas, and outputs the differential STBC code of the distribution matrix to the transmit antennas.

摘要翻译： 提供了一种使用八个或更少的发射天线的多天线系统中的差分STBC发射/接收装置。 在差分STBC发送装置中，符号映射器接收二进制数据并从二进制数据生成多个符号，每个符号具有多个位。 时空块编码器通过对符号进行编码来生成STBC。 差分处理器通过反馈和延迟对STBC进行差分编码。 分配矩阵处理器根据发射天线的数量将差分编码的STBC替换为预设的分布矩阵，并将分布矩阵的差分STBC码输出到发射天线。

公开(公告)号：US07539264B2

公开(公告)日：2009-05-26

申请号：US11809317

申请日：2007-05-31

申请人： Chan-Soo Hwang ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Chan-Soo Hwang ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： H04B7/02 ,  H04B7/216

CPC分类号： H04L1/0069 ,  H04L1/0618 ,  H04L25/0202

摘要： A mobile communication system includes M transmission antennas, P encoders for receiving P information bit streams and encoding the received information bit streams with a space-time trellis code (STTC), and M modulators for modulating information bit streams output from the P encoders in a predetermined modulation scheme and outputting modulation symbol streams. A sequence used for channel estimation is generated, and the sequence is transmitted in substitute for at least one modulation symbol in a predetermined position through the M transmission antennas, for each of the modulation symbol streams output from the M modulators.

公开(公告)号：US07496148B2

公开(公告)日：2009-02-24

申请号：US11773257

申请日：2007-07-03

申请人： Chang-Soo Hwang ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Chang-Soo Hwang ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： H04B7/02 ,  H04B7/10

CPC分类号： H04L1/065 ,  H04L1/0069 ,  H04L1/0625 ,  H04L1/0631

摘要： A mobile communication system includes at least three transmission antennas of first to third transmission antennas, and uses an overlapped antenna scheme for grouping the first and second transmission antennas into a first transmission antenna group and grouping the second and third transmission antennas into a second transmission antenna group. First and second modulators modulate L information bit streams to be transmitted through the first transmission antenna group and output first and second modulation symbol streams. Third and fourth modulators modulate L other information bit streams to be transmitted through the second transmission antenna group and output third and fourth symbol streams. First to fourth puncturers puncture at least one modulation symbol in a predetermined position among the first to fourth modulation symbol streams. A multiplexer transmits a modulation symbol stream output from the first puncturer through the first transmission antenna, transmits modulation symbol streams output from the second and third puncturers through the second transmission antenna after summation, and transmits a modulation symbol stream output from the third puncturer through the third transmission antenna.

摘要翻译： 移动通信系统包括第一至第三发射天线的至少三个发射天线，并且使用重叠的天线方案将第一和第二发射天线分组成第一发射天线组，并将第二和第三发射天线分组成第二发射天线 组。 第一和第二调制器调制通过第一发送天线组发送的L个信息比特流并输出第一和第二调制符号流。 第三和第四调制器调制通过第二发送天线组发送的另外的信息比特流并输出第三和第四符号流。 第一至第四穿孔器在第一至第四调制符号流中的预定位置中至少刺穿一个调制符号。 复用器通过第一发送天线发送从第一穿孔器输出的调制符号流，在求和之后通过第二发送天线发送从第二和第三穿孔器输出的调制符号流，并且从第三穿孔器输出的调制符号流通过 第三发射天线。