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    Apparatus and method for cooperative relay in a wireless communication system based on relay stations
    2.
    发明授权
    Apparatus and method for cooperative relay in a wireless communication system based on relay stations 有权
    基于中继站的无线通信系统中协同中继的装置和方法

    公开(公告)号：US08019288B2

    公开(公告)日：2011-09-13

    申请号：US12228486

    申请日：2008-08-13

    申请人： Tak-Ki Yu ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Sae-Young Chung ,  Muryong Kim

    发明人： Tak-Ki Yu ,  Yung-Soo Kim ,  Myeon-Kyun Cho ,  Sae-Young Chung ,  Muryong Kim

    IPC分类号： H04B1/00 ,  H04B7/00

    CPC分类号： H04W52/241 ,  H04B7/022 ,  H04B7/026 ,  H04B7/0617 ,  H04B7/15592 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/004 ,  H04L1/0656 ,  H04L2001/0097

    摘要： An apparatus and method for cooperative relay in a multiple-antenna wireless communication system based on relay stations (RSs) are provided. The apparatus includes a serial/parallel converter for dividing data into N number of streams, a channel estimator for calculating a first transmission rate at which a RS performing the cooperative relay can perform decoding and a second transmission rate at which all relay stations performing the cooperative relay can commonly perform decoding, and determining transmission rates for each of the N-number streams, and an adaptive modulation and coding (AMC) unit for encoding and modulating the N-number streams according to their respective transmission rates.

    摘要翻译： 提供了一种基于中继站（RS）的多天线无线通信系统中协同中继的装置和方法。 该装置包括用于将数据分割成N个流的串行/并行转换器，用于计算执行协作中继的RS可执行解码的第一传输速率的信道估计器，以及执行协作的所有中继站的第二传输速率 继电器可以共同执行解码，并且确定N个数据流中的每一个的传输速率，以及用于根据它们各自的传输速率对N个数据流进行编码和调制的自适应调制和编码（AMC）单元。

    Multilevel coding with unequal error protection and time diversity for bandwidth efficient transmission
    3.
    发明授权
    Multilevel coding with unequal error protection and time diversity for bandwidth efficient transmission 有权
    具有不等差错保护和带宽有效传输的时间分集的多级编码

    公开(公告)号：US07190732B2

    公开(公告)日：2007-03-13

    申请号：US09765754

    申请日：2001-01-19

    申请人： Sae-Young Chung ,  Hui-Ling Lou

    发明人： Sae-Young Chung ,  Hui-Ling Lou

    IPC分类号： H04L23/02 ,  H03M13/00

    CPC分类号： H04L1/0058 ,  H04L1/0041 ,  H04L1/0065 ,  H04L1/007

    摘要： Techniques for multilevel coding of a stream of information bits in a communication system. The stream of information bits is separated into portions, and each of the portions is associated with a different level of the multilevel coding. At least one code is applied to the portion of the information bits of each level in a designated subset of the full set of levels, such that the portions of the information bits for levels in the designated subset are coded while the portions of the information bits for levels not in the designated subset are uncoded. Both the coded portions of the information bits and the uncoded portions of the information bits are used to select modulation symbols for transmission in the system. Advantageously, the invention provides improved coding gain relative to conventional techniques, and can be configured to provide unequal error protection as well as time diversity for transmissions in the system.

    摘要翻译： 通信系统中信息比特流多级编码技术。 信息比特流被分成多个部分，并且每个部分与多级编码的不同级别相关联。 至少一个代码被应用于整个级别的指定子集中的每个级别的信息位的部分，使得指定子集中的级别的信息位的部分被编码，同时信息位的部分 对于未在指定子集中的级别未编码。 信息比特的编码部分和信息比特的未编码部分都用于选择用于在系统中传输的调制符号。 有利地，本发明相对于常规技术提供改进的编码增益，并且可以被配置为为系统中的传输提供不相等的错误保护以及时间分集。

    Method and apparatus for generating channel error flags for error mitigation and/or concealment in source decoders
    7.
    发明授权
    Method and apparatus for generating channel error flags for error mitigation and/or concealment in source decoders 有权
    用于在源解码器中产生用于错误缓解和/或隐藏的通道错误标志的方法和装置

    公开(公告)号：US06799294B1

    公开(公告)日：2004-09-28

    申请号：US09716558

    申请日：2000-11-20

    申请人： Sae-Young Chung ,  Hui-Ling Lou

    发明人： Sae-Young Chung ,  Hui-Ling Lou

    IPC分类号： H03M1303

    CPC分类号： H04L1/0082 ,  H04L1/0054

    摘要： Error flags are generated for use in source decoding of a source-coded bit stream transmitted through a channel of a communication system. The source-coded bit stream is channel coded using at least one channel code, and the channel code is decoded in a soft-decision channel decoder to generate a received version of the source-coded bit stream and one or more reliability measures associated with a designated portion of the received version of the source-coded bit stream. The reliability measures are processed to generate one or more error flags indicative of the presence of an error in the corresponding portion of the received version of the source-coded bit stream. The invention allows different detection capabilities to be used for different portions of the received version of the source-coded bit stream, and further allows these detection capabilities to be changed dynamically at the receiver. The error flags may be used to trigger an error mitigation/concealment algorithm in the source decoder. Advantageously, the error flags can be matched to frames or subframes of the source-coded bit stream, such that the performance of the error mitigation/concealment algorithm is substantially improved relative to its performance when using error flags generated from a conventional outer block code.

    摘要翻译： 生成错误标志用于通过通信系统的通道发送的源编码比特流的源解码。 源编码比特流使用至少一个信道码进行信道编码，并且在软判决信道解码器中解码信道码，以产生源编码比特流的接收版本和与 源编码比特流的接收版本的指定部分。 处理可靠性度量以产生指示在源编码比特流的接收版本的对应部分中存在错误的一个或多个错误标志。 本发明允许将不同的检测能力用于源编码比特流的接收版本的不同部分，并且还允许在接收机处动态地改变这些检测能力。 错误标志可用于触发源解码器中的错误减轻/隐藏算法。 有利地，错误标志可以与源编码比特流的帧或子帧匹配，使得当使用从常规外部块码产生的错误标志时，相对于其性能，误差减轻/隐藏算法的性能被显着改善。