公开(公告)号：US06298461B1

公开(公告)日：2001-10-02

申请号：US09236070

申请日：1999-01-25

申请人： Wen Tong ,  Rui Wang ,  Vitali B. Kreindeline ,  Mikhail G. Bakouline ,  Alexandre M. Chloma ,  Yuri S. Shinakov

发明人： Wen Tong ,  Rui Wang ,  Vitali B. Kreindeline ,  Mikhail G. Bakouline ,  Alexandre M. Chloma ,  Yuri S. Shinakov

IPC分类号： H03M1300

CPC分类号： H03M13/6362 ,  H03M13/1515 ,  H03M13/2966

摘要： An encoder for a wideband CDMA communications system comprises an outer Reed-Solomon code encoder and an inner parallel concatenated convolutional code (PCCC) or turbo code encoder. An iterative PCCC decoder, for decoding the inner code, includes summing functions in forward and feedback paths for producing extrinsic information to enhance soft decoding decisions by first and second decoders in successive decoding iterations. An outer code decoder connected following the PCCC decoder also can provide serial feedback information for enhancing iterative decisions by the PCCC decoder.

摘要翻译： 用于宽带CDMA通信系统的编码器包括外部Reed-Solomon码编码器和内部并行级联卷积码（PCCC）或turbo码编码器。 用于解码内码的迭代PCCC解码器包括用于产生外在信息的前向和反馈路径中的求和功能，以在连续解码迭代中增强第一和第二解码器的软解码决定。 连接在PCCC解码器之后的外部码解码器也可以提供用于增强PCCC解码器的迭代决定的串行反馈信息。

公开(公告)号：US07280466B2

公开(公告)日：2007-10-09

申请号：US10116054

申请日：2002-04-05

申请人： Wen Tong ,  Yuri S. Shinakov ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

发明人： Wen Tong ,  Yuri S. Shinakov ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

IPC分类号： H04J11/00

CPC分类号： H04B7/0678 ,  H04B2201/70701 ,  H04J13/0048

摘要： In a transmitter of a wireless communications system having M transmit antennas (10), each transmit antenna is supplied with a respective combined signal comprising a respective one of M groups each of N data sub-streams, orthogonally spread by N Walsh code sequences (W1 to WN). The N orthogonal code sequences used for each of the M groups comprise a respective one of M different combinations of N from Nw orthogonal code sequences, where Nw>N. M and N are integers greater than one. The combined signals can also include orthogonally spread pilot signals (WP) for channel estimation at a receiver. Orthogonality of the signals transmitted from the transmit antennas is increased, so that transmit signal power can be decreased and/or the receiver can have fewer than M receive antennas.

摘要翻译： 在具有M个发射天线（10）的无线通信系统的发射机中，向每个发射天线提供相应的组合信号，该组合信号包括由N个沃尔什码序列（W）正交扩展的N个数据子流中的每一个的M个组中的相应组合信号 1到WN）。 用于每个M组的N个正交码序列包括来自N个正交码序列的N个不同组合中的N个的相应一个，其中N个W N。 M和N是大于1的整数。 组合信号还可以包括在接收机处进行信道估计的正交扩展导频信号（WP）。 从发送天线发送的信号的正交性增加，从而可以减少发射信号功率和/或接收机可以具有少于M个接收天线。

公开(公告)号：US07843888B1

公开(公告)日：2010-11-30

申请号：US10432216

申请日：2000-11-22

申请人： Rui R. Wang ,  Chao Wang, legal representative ,  Ming Jia ,  Yuri S. Shinakov ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

发明人： Rui R. Wang ,  Ming Jia ,  Yuri S. Shinakov ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

IPC分类号： H04W4/00 ,  H03M13/00

CPC分类号： H04L1/065 ,  H04L1/005 ,  H04L1/006 ,  H04L1/0066

摘要： Space-time diversity using a plurality of transmit antennas is provided with a turbo coding arrangement comprising two recursive systematic convolutional coders, to one of which input bits are supplied directly and to the other of which the information bits are supplied after interleaving of bit groups for respective symbol intervals. Symbols produced by the coders and comprising systematic and parity information are supplied to paths to the antennas alternately in successive symbol intervals to provide the space-time diversity. Arrangements are described for 2 and 4 antennas and for various convolutional codes, and an iterative decoder is also described.

摘要翻译： 使用多个发射天线的时空分集被提供有包括两个递归系统卷积编码器的turbo编码装置，其中一个输入比特被直接提供，并且另一个是在对比特组进行交织之后提供信息比特， 各自的符号间隔。 由编码器产生并且包括系统和奇偶信息的符号在连续符号间隔中被交替地提供给天线的路径以提供时空分集。 对于2和4天线以及各种卷积码描述了安排，并且还描述了迭代解码器。

公开(公告)号：US08705659B2

公开(公告)日：2014-04-22

申请号：US10792127

申请日：2004-03-04

申请人： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

发明人： Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

IPC分类号： H03C7/00 ,  H04L27/00

CPC分类号： H04B7/0482 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0626 ,  H04L1/0656 ,  H04L25/0248 ,  H04L25/03343 ,  H04L2025/03426

摘要： Systems and methods of optimizing communication channels in multi-user communication systems are provided. Coding weights are determined based on communication channel state information for communication channels between a transmitter and multiple receivers. The coding weights are applied to communication signals to be transmitted from the transmitter to the receivers. Each receiver decodes received signals using inverses of the coding weights. Embodiments of the invention support multi-user MIMO (Multiple Input Multiple Output) where each receiver has fewer antennas than the transmitter, and enhance system performance if the total number of antennas at all of the receivers exceeds the number of antennas at the transmitter.

摘要翻译： 提供了在多用户通信系统中优化通信信道的系统和方法。 基于用于发射机和多个接收机之间的通信信道的通信信道状态信息来确定编码权重。 编码权重被应用于从发射机发射到接收机的通信信号。 每个接收机使用反编码权重来解码接收到的信号。 本发明的实施例支持多用户MIMO（多输入多输出），其中每个接收机具有比发射机更少的天线，并且如果所有接收机的天线总数超过发射机的天线数量，则增强系统性能。