公开(公告)号：US20080018535A1

公开(公告)日：2008-01-24

申请号：US11776631

申请日：2007-07-12

申请人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Dong-Ho Kim ,  Vahid Tarokh

发明人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Dong-Ho Kim ,  Vahid Tarokh

IPC分类号： H01Q21/00

CPC分类号： H01Q21/00 ,  H01Q1/52

摘要： An apparatus and method for removing interference in a transmitting end of a multi-antenna system is provided. The method includes decomposing a channel matrix comprising channel coefficients for a plurality of terminals, calculating a value proportional to an interference signal for each of antennas, and calculating a sum of a transmission signal and the calculated value for each terminal and multiplying the calculated sum by the decomposed channel matrix. Accordingly, channel capacity can be improved by optimizing a data transfer rate and transmission power for each terminal.

摘要翻译： 提供一种用于消除多天线系统的发送端的干扰的装置和方法。 该方法包括分解包括多个终端的信道系数的信道矩阵，计算与每个天线的干扰信号成比例的值，并且计算每个终端的发送信号和计算值的和，并将计算出的和乘以 分解的信道矩阵。 因此，通过优化每个终端的数据传输速率和传输功率可以提高信道容量。

公开(公告)号：US07986750B2

公开(公告)日：2011-07-26

申请号：US11776631

申请日：2007-07-12

申请人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Dong-Ho Kim ,  Vahid Tarokh

发明人： In-Soo Hwang ,  Cheol-Woo You ,  Yung-Soo Kim ,  Dong-Ho Kim ,  Vahid Tarokh

IPC分类号： H03K9/00

CPC分类号： H01Q21/00 ,  H01Q1/52

摘要： An apparatus and method for removing interference in a transmitting end of a multi-antenna system is provided. The method includes decomposing a channel matrix including channel coefficients for a plurality of terminals, calculating a value proportional to an interference signal for each of antennas, and calculating a sum of a transmission signal and the calculated value for each terminal and multiplying the calculated sum by the decomposed channel matrix. Accordingly, channel capacity can be improved by optimizing a data transfer rate and transmission power for each terminal.

摘要翻译： 提供一种用于消除多天线系统的发送端的干扰的装置和方法。 该方法包括分解包括多个终端的信道系数的信道矩阵，计算与每个天线的干扰信号成比例的值，并且计算每个终端的传输信号和计算值的和，并将计算出的和乘以 分解的信道矩阵。 因此，通过优化每个终端的数据传输速率和传输功率可以提高信道容量。

公开(公告)号：US07786934B2

公开(公告)日：2010-08-31

申请号：US12030639

申请日：2008-02-13

申请人： In-Soo Hwang ,  Myeon-Kyun Cho ,  Dong-Ho Kim ,  Young-Ho Jung ,  Yung-Soo Kim ,  Yu-Seok Kim ,  Vahid Tarokh

发明人： In-Soo Hwang ,  Myeon-Kyun Cho ,  Dong-Ho Kim ,  Young-Ho Jung ,  Yung-Soo Kim ,  Yu-Seok Kim ,  Vahid Tarokh

IPC分类号： H01Q3/00 ,  G01S1/00

CPC分类号： H04B7/0617 ,  H04B7/0447 ,  H04B7/0669

摘要： An apparatus and method for removing interference in a transmitting end of a multi-antenna system are provided. The method includes receiving channel information for all Receive (Rx) antennas; calculating a beam-forming matrix that maximizes a Signal-to-Interference plus Noise Ratio (SINR) for each Rx antenna by using the received channel information; calculating an integer value which is in proportion to an interference signal for each Rx antenna by using the received channel information and the calculated beam-forming matrix, and performing Dirty Paper Coding (DPC) on a Transmit (Tx) signal by using the calculated integer value; and performing beam-forming by multiplying the Tx signal that has undergone the DPC by the calculated beam-forming matrix. Accordingly, a highest data rate for each user and a highest diversity can be obtained.

摘要翻译： 提供一种用于消除多天线系统的发送端的干扰的装置和方法。 该方法包括接收所有接收（Rx）天线的信道信息; 计算通过使用所接收的信道信息使每个Rx天线的信号与干扰加噪声比（SINR）最大化的波束形成矩阵; 通过使用所接收的信道信息和所计算的波束形成矩阵来计算与每个Rx天线的干扰信号成比例的整数值，并且通过使用所计算的整数对发送（Tx）信号执行脏纸编码（DPC） 值; 并且通过将已经经历DPC的Tx信号乘以所计算的波束形成矩阵来执行波束形成。 因此，可以获得每个用户的最高数据速率和最高的分集度。

公开(公告)号：US20080198071A1

公开(公告)日：2008-08-21

申请号：US12030639

申请日：2008-02-13

申请人： In-Soo Hwang ,  Myeon-Kyun Cho ,  Dong-Ho Kim ,  Young-Ho Jung ,  Yung-Soo Kim ,  Yu-Seok Kim ,  Vahid Tarokh

发明人： In-Soo Hwang ,  Myeon-Kyun Cho ,  Dong-Ho Kim ,  Young-Ho Jung ,  Yung-Soo Kim ,  Yu-Seok Kim ,  Vahid Tarokh

IPC分类号： H01Q3/00

CPC分类号： H04B7/0617 ,  H04B7/0447 ,  H04B7/0669

摘要： An apparatus and method for removing interference in a transmitting end of a multi-antenna system are provided. The method includes receiving channel information for all Receive (Rx) antennas; calculating a beam-forming matrix that maximizes a Signal-to-Interference plus Noise Ratio (SINR) for each Rx antenna by using the received channel information; calculating an integer value which is in proportion to an interference signal for each Rx antenna by using the received channel information and the calculated beam-forming matrix, and performing Dirty Paper Coding (DPC) on a Transmit (Tx) signal by using the calculated integer value; and performing beam-forming by multiplying the Tx signal that has undergone the DPC by the calculated beam-forming matrix. Accordingly, a highest data rate for each user and a highest diversity can be obtained.

摘要翻译： 提供一种用于消除多天线系统的发送端的干扰的装置和方法。 该方法包括接收所有接收（Rx）天线的信道信息; 计算通过使用所接收的信道信息使每个Rx天线的信号与干扰加噪声比（SINR）最大化的波束形成矩阵; 通过使用所接收的信道信息和所计算的波束形成矩阵来计算与每个Rx天线的干扰信号成比例的整数值，并且通过使用所计算的整数对发送（Tx）信号执行脏纸编码（DPC） 值; 并且通过将已经经历DPC的Tx信号乘以所计算的波束形成矩阵来执行波束形成。 因此，可以获得每个用户的最高数据速率和最高的分集度。

公开(公告)号：US08718192B2

公开(公告)日：2014-05-06

申请号：US12166750

申请日：2008-07-02

申请人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  In-Soo Hwang ,  Vahid Tarokh

发明人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  In-Soo Hwang ,  Vahid Tarokh

IPC分类号： H03K9/00

CPC分类号： H04L25/0204 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/06 ,  H04L1/20

摘要： An apparatus and method for generating an effective Signal to Noise Ratio (SNR) per stream in a Multiple Input Multiple Output (MIMO) wireless communication system is disclosed. The apparatus includes a selector, a calculator, a generator, and a decider. The selector selects effective streams among whole streams. The calculator calculates a relative SNR rate between the effective streams. The generator generates an equation having as a solution an SNR of a first effective stream. The decider decides an SNR per effective stream using the solution of the equation and the relative SNR rate.

摘要翻译： 公开了一种用于在多输入多输出（MIMO）无线通信系统中产生每个流的有效信噪比（SNR）的装置和方法。 该装置包括选择器，计算器，发生器和决定器。 选择器在整个流中选择有效的流。 计算器计算有效流之间的相对SNR率。 发生器产生具有作为第一有效流的SNR的解的等式。 决策者使用公式的解和相对SNR率决定每个有效流的SNR。

公开(公告)号：US08238471B2

公开(公告)日：2012-08-07

申请号：US12165884

申请日：2008-07-01

申请人： In-Soo Hwang ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Eun-Seok Ko ,  Vahid Tarokh

发明人： In-Soo Hwang ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Eun-Seok Ko ,  Vahid Tarokh

IPC分类号： H04L25/49

CPC分类号： H04W52/42 ,  H04L25/0206

摘要： An apparatus and a method for interference cancellation in a transmitting end of a multi-antenna system are provided. A precode is generated which maximizes a diversity gain of one or more receive antennas using channel information of the receive antennas to be serviced. Transmit powers of the receive antennas are updated by taking into account a power loss and a shaping loss according to a dirty paper coding. Transmit signals are precoded by updating the precode according to the updated transmit powers. The dirty paper coding is performed on the precoded transmit signals to be transmitted to the receive antennas.

摘要翻译： 提供了一种用于多天线系统的发送端的干扰消除的装置和方法。 生成使用要维护的接收天线的信道信息使一个或多个接收天线的分集增益最大化的预编码。 通过根据脏纸编码考虑功率损耗和成形损耗来更新接收天线的发射功率。 通过根据更新的发射功率更新预编码来对发射信号进行预编码。 对要发送到接收天线的预编码的发送信号执行脏纸编码。

公开(公告)号：US20090010359A1

公开(公告)日：2009-01-08

申请号：US12165884

申请日：2008-07-01

申请人： In-Soo Hwang ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Eun-Seok Ko ,  Vahid Tarokh

发明人： In-Soo Hwang ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Eun-Seok Ko ,  Vahid Tarokh

IPC分类号： H04L27/04

CPC分类号： H04W52/42 ,  H04L25/0206

摘要： An apparatus and a method for interference cancellation in a transmitting end of a multi-antenna system are provided. A precode is generated which maximizes a diversity gain of one or more receive antennas using channel information of the receive antennas to be serviced. Transmit powers of the receive antennas are updated by taking into account a power loss and a shaping loss according to a dirty paper coding. Transmit signals are precoded by updating the precode according to the updated transmit powers. The dirty paper coding is performed on the precoded transmit signals to be transmitted to the receive antennas.

摘要翻译： 提供了一种用于多天线系统的发送端的干扰消除的装置和方法。 生成使用要维护的接收天线的信道信息使一个或多个接收天线的分集增益最大化的预编码。 通过根据脏纸编码考虑功率损耗和成形损耗来更新接收天线的发射功率。 通过根据更新的发射功率更新预编码来对发射信号进行预编码。 对要发送到接收天线的预编码的发送信号执行脏纸编码。

公开(公告)号：US20090010349A1

公开(公告)日：2009-01-08

申请号：US12166750

申请日：2008-07-02

申请人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  In-Soo Hwang ,  Vahid Tarokh

发明人： Eun-Seok Ko ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  In-Soo Hwang ,  Vahid Tarokh

IPC分类号： H04L27/28

CPC分类号： H04L25/0204 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/06 ,  H04L1/20

摘要： An apparatus and method for generating an effective Signal to Noise Ratio (SNR) per stream in a Multiple Input Multiple Output (MIMO) wireless communication system is disclosed. The apparatus includes a selector, a calculator, a generator, and a decider. The selector selects effective streams among whole streams. The calculator calculates a relative SNR rate between the effective streams. The generator generates an equation having as a solution an SNR of a first effective stream. The decider decides an SNR per effective stream using the solution of the equation and the relative SNR rate.

摘要翻译： 公开了一种用于在多输入多输出（MIMO）无线通信系统中产生每个流的有效信噪比（SNR）的装置和方法。 该装置包括选择器，计算器，发生器和决定器。 选择器在整个流中选择有效的流。 计算器计算有效流之间的相对SNR率。 发生器产生具有作为第一有效流的SNR的解的等式。 决策者使用公式的解和相对SNR率决定每个有效流的SNR。

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：US20060262714A1

公开(公告)日：2006-11-23

申请号：US10546081

申请日：2004-02-13

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

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

IPC分类号： H04J11/00 ,  H04J1/00

CPC分类号： H04L27/2623 ,  H04L1/0618 ,  H04L27/2615

摘要： Provided is a method of reducing a peak-to-average-power ratio in a multiple antenna orthogonal frequency division multiplexing communication system. The method includes: reducing a peak-to-average-power ratio of input serial data sequences; space-time coding the input serial data sequences with the reduced peak-to-average-power ratio to generate N symbols to be tranmitted via N antennas; receiving the serial data sequences of the N symbols to transform the serial data sequences into N parallel data sequences; allocating each of the N parallel data sequences to Ns sub-carriers and performing Inverse Fast Fourier Transform on the N parallel data sequences; transforming the N parallel data sequences into N serial data symbols; and replicating a portion of the serial data symbols to generate cyclic prefixes and interleaving the cyclic prefixes into starting portions of the serial data symbols to cyclically expand the N symbols.

摘要翻译： 提供了一种降低多天线正交频分复用通信系统中的峰值与平均功率比的方法。 该方法包括：降低输入串行数据序列的峰值与平均功率比; 以降低的峰均功率比对输入串行数据序列进行时空编码，以产生要通过N个天线发射的N个符号; 接收N个符号的串行数据序列以将串行数据序列变换成N个并行数据序列; 将N个并行数据序列中的每一个分配给N个子载波，并在N个并行数据序列上执行快速傅立叶逆变换; 将N个并行数据序列变换为N个串行数据符号; 并且复制一部分串行数据符号以产生循环前缀并且将循环前缀交织到串行数据符号的起始部分中以循环地扩展N个符号。