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    DIGITAL COMMUNICATION SYSTEM
    2.
    发明公开
    DIGITAL COMMUNICATION SYSTEM 审中-公开
    数字KOMMUNIKATIONSSYSTEM

    公开(公告)号：EP2936689A4

    公开(公告)日：2016-10-19

    申请号：EP13865233

    申请日：2013-12-20

    申请人： UNIV SOUTH AUSTRALIA

    发明人： LAND INGMAR RUDIGER ,  LECHNER GOTTFRIED ,  GRANT ALEXANDER JAMES ,  HALEY DAVID VICTOR LAWRIE

    IPC分类号： H03M13/29 ,  H03D9/04 ,  H03M13/00 ,  H03M13/11 ,  H03M13/37 ,  H03M13/39 ,  H04B1/30 ,  H04B10/516 ,  H04J13/00 ,  H04L1/00 ,  H04L27/10 ,  H04L27/12 ,  H04L27/14 ,  H04L27/18 ,  H04L27/20

    CPC分类号： H04L27/18 ,  H03M13/1157 ,  H03M13/1197 ,  H03M13/2909 ,  H03M13/2957 ,  H03M13/3784 ,  H03M13/616 ,  H03M13/6325 ,  H03M13/6331 ,  H04B10/516 ,  H04L1/0042 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0065 ,  H04L27/2003

    摘要： Methods and apparatus for use in communication systems using recursive modulation schemes with a Low Density Generator Matrix code (including an irregular repeat accumulate (IRA) code) are described that have reduced complexity and thus reduced cost compared to prior art systems. A communication system is described in which the transmitter concatenates a low density generator matrix code with an accumulator followed by a recursive modulator in order to eliminate the use of an interleaver, and in which the receiver combines the decoder for the accumulator and the soft demodulator into a single joint decoder in order reduce the number of components and complexity. Another variation is also described in which the transmitter is further simplified by eliminated the accumulator altogether, and in which the receiver is further simplified by replacing the joint decoder with a soft demodulator prior to the LDGM soft decoder.

    摘要翻译： 使用具有低密度发生器矩阵码（包括不规则重复累积（IRA）码）的递归调制方案的通信系统中使用的方法和装置被描述为与现有技术系统相比降低了复杂度并因此降低了成本。 描述了一种通信系统，其中发射机将低密度发生器矩阵码与累加器后跟递归调制器连接，以消除交织器的使用，并且其中接收机将用于累加器的解码器和软解调器组合成 单个联合解码器，以减少组件的数量和复杂性。 还描述了另一变型，其中通过一起消除累加器来进一步简化发射机，并且其中通过在LDGM软解码器之前用软解调器替换联合解码器来进一步简化接收机。