公开(公告)号：US07505527B2

公开(公告)日：2009-03-17

申请号：US10681937

申请日：2003-10-09

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

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

IPC分类号： H04B7/02

CPC分类号： H04L1/0618 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0643

摘要： A transmitter and a receiver are disclosed herein that support transmit antenna diversity using space-time block coding in a wireless communication system. The transmitter produces symbol combinations containing, as their elements, input symbols, the inversions and conjugates of the symbols, and symbols obtained by rotating the phases of the symbols once, forms a matrix having symbols in at least two columns orthogonal to each other with the symbol combinations, and transmits the matrix. The receiver detects symbols that minimize maximum likelihood (ML) decoding metrics over all possible symbols using channel gains from transmit antennas to a receive antenna. Also, the receiver selects candidate symbols among all possible symbols according to the characteristics of transmitted modulation symbols and detects symbols that minimize the ML decoding metrics.

摘要翻译： 本文公开的发射器和接收器在无线通信系统中支持使用空时块编码的发射天线分集。 发射机产生符号组合，其包含输入符号，符号的反转和共轭以及通过旋转符号的相位获得的符号一次作为其元素，形成具有彼此正交的至少两列中的符号的矩阵， 符号组合，并传输矩阵。 接收机通过使用从发射天线到接收天线的信道增益，检测所有可能符号上的最大似然（ML）解码度量的符号。 此外，接收机根据发送的调制符号的特性来选择所有可能符号中的候选符号，并且检测使ML解码度量最小化的符号。

公开(公告)号：US07889814B2

公开(公告)日：2011-02-15

申请号：US11804126

申请日：2007-05-17

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

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

IPC分类号： H04L27/06

CPC分类号： H04L1/0618 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0643

摘要： A transmitter and a receiver are disclosed herein that support transmit antenna diversity using space-time block coding in a wireless communication system. The transmitter produces symbol combinations containing, as their elements, input symbols, the inversions and conjugates of the symbols, and symbols obtained by rotating the phases of the symbols once, forms a matrix having symbols in at least two columns orthogonal to each other with the symbol combinations, and transmits the matrix. The receiver detects symbols that minimize maximum likelihood (ML) decoding metrics over all possible symbols using channel gains from transmit antennas to a receive antenna. Also, the receiver selects candidate symbols among all possible symbols according to the characteristics of transmitted modulation symbols and detects symbols that minimize the ML decoding metrics.

摘要翻译： 本文公开的发射器和接收器在无线通信系统中支持使用空时块编码的发射天线分集。 发射机产生符号组合，其包含输入符号，符号的反转和共轭以及通过旋转符号的相位获得的符号一次作为其元素，形成具有彼此正交的至少两列中的符号的矩阵， 符号组合，并传输矩阵。 接收机通过使用从发射天线到接收天线的信道增益，检测所有可能符号上的最大似然（ML）解码度量的符号。 此外，接收机根据发送的调制符号的特性来选择所有可能符号中的候选符号，并且检测使ML解码度量最小化的符号。

公开(公告)号：US07480339B2

公开(公告)日：2009-01-20

申请号：US10695579

申请日：2003-10-28

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 ,  H03D1/00

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.

摘要翻译： 一种移动通信系统包括：M个发送天线，用于接收P个信息比特流的P编码器，并用空时格码（STTC）对接收到的信息比特流进行编码; M个调制器，用于调制从P编码器输出的信息比特流 预定调制方案并输出调制符号流。 产生用于信道估计的序列，并且对于从M个调制器输出的每个调制符号流，通​​过M个发送天线，发送该序列以代替预定位置中的至少一个调制符号。

公开(公告)号：US07457372B2

公开(公告)日：2008-11-25

申请号：US10695493

申请日：2003-10-28

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： H04L27/04 ,  H04B1/69

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：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：US07397866B2

公开(公告)日：2008-07-08

申请号：US10771494

申请日：2004-02-04

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

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

IPC分类号： H03K9/00

CPC分类号： H04L1/0618

摘要： A method and apparatus for transmitting/receiving a differential space-time block code (STBC) by estimating only channel power in a wireless communication system using a plurality of transmission antennas. A receiver for receiving information symbols encoded by a differential STBC before and decoding the received information symbols collects a signal received at a reception antenna from a plurality of transmission antennas for one block duration; calculates a substitution signal by multiplying the received signal by a signal received for a previous block duration; estimates channel power for a channel from the plurality of transmission antennas to the reception antenna; normalizes the estimated channel power with a normalization value determined as a size of previously received symbols; and calculates information symbols by dividing the substitution signal by the normalized channel power.

摘要翻译： 一种通过仅使用多个发送天线估计无线通信系统中的信道功率来发送/接收差分时空块码（STBC）的方法和装置。 用于接收由差分STBC编码的信息符号并且对接收到的信息符号进行解码的接收机在多个发送天线收集在接收天线处接收到的信号一个块持续时间; 通过将接收到的信号乘以在先前块持续时间接收的信号来计算替代信号; 估计从多个发送天线到接收天线的信道的信道功率; 使用被确定为先前接收到的符号的大小的归一化值来对估计的信道功率进行归一化; 并且通过将取代信号除以归一化信道功率来计算信息符号。

公开(公告)号：US07298804B2

公开(公告)日：2007-11-20

申请号：US10692896

申请日：2003-10-24

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： H04B7/10

CPC分类号： H04L1/0054 ,  H04L1/0618

摘要： A receiver for receiving complex symbols in a radio communication system, in which a symbol arranger collects signals from at least three transmitter antennas through at least one receiver antenna over four time intervals; a channel estimator estimates at least three channel gains from the three transmitter antennas to the receiver antenna; first and second decoders each compute metrics for all possible pairs of symbols using the received signals and channel gains, and detect two symbols having a minimum metric; And a P/S (Parallel to Serial) converter arranges the detected symbols in the right order. Each decoder linearly operates the received signals and channel gains, pre-detects two symbols using threshold detection, and outputs the pre-detected symbols as final symbols if the product of the product of the pre-detected symbols and a constant determined by the channel gains is a minimum.

摘要翻译： 一种用于在无线电通信系统中接收复合符号的接收机，其中符号编排器通过至少一个接收天线在四个时间间隔内收集来自至少三个发射机天线的信号; 信道估计器估计从三个发射机天线到接收机天线的至少三个信道增益; 每个解码器使用所接收的信号和信道增益来计算所有可能的符号对的度量，并且检测具有最小度量的两个符号; 并且P / S（并行到串行）转换器以正确的顺序排列检测到的符号。 每个解码器线性地操作接收的信号和信道增益，使用阈值检测来预检测两个符号，并且如果预检测符号的乘积和由信道增益确定的常数的乘积的乘积，则将预检测符号作为最终符号输出 是最小的。

公开(公告)号：US20050135500A1

公开(公告)日：2005-06-23

申请号：US11020804

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 ,  H04L1/02 ,  H04L1/06 ,  H04L27/00

CPC分类号： H04B7/02 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0668

摘要： A space-time block coding method using an auxiliary symbol in a multiple transmit/receive antenna system is provided. In the space-time block coding method, binary data to be transmitted is received. Free symbols and an auxiliary symbol are generated by dividing the received binary data into units of a predetermined number of bits. The free symbols and the auxiliary symbol are encoded according to an encoding matrix and transmitted.

摘要翻译： 提供了一种在多发射/接收天线系统中使用辅助符号的时空块编码方法。 在时空块编码方法中，接收要发送的二进制数据。 通过将接收的二进制数据分割成预定位数的单位来产生自由符号和辅助符号。 自由符号和辅助符号根据编码矩阵进行编码并传输。

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。