Integrated maximum a posteriori (MAP) and turbo product coding for optical communications systems
    4.
    发明申请
    Integrated maximum a posteriori (MAP) and turbo product coding for optical communications systems 审中-公开
    综合最大后验(MAP)和涡轮产品编码光通信系统

    公开(公告)号:US20060285852A1

    公开(公告)日:2006-12-21

    申请号:US11471717

    申请日:2006-06-21

    申请人: Wenze Xi Tulay Adali

    发明人: Wenze Xi Tulay Adali

    IPC分类号: H04B10/12

    CPC分类号: H04L25/03171

    摘要: An integrated maximum a posteriori equalization and turbo product coding (IMAP-TPC) system for optical fiber communications systems (OFCS) is provided that uses probabilistic characterization of the electrical current in the presence of inter-symbol interference (ISI) and noise to compensate their effects and improve the bit error rate. In the IMAP-TPC system, turbo product code (TPC) decoding is integrated with a symbol-by-symbol maximum a posteriori (MAP) detector. The MAP detector calculates the log-likelihood ratio of a received symbol using the conditional electrical probability density information, and hence obtains a much more accurate reliability measure than the traditional measure used in the TPC decoder.

    摘要翻译: 提供了一种用于光纤通信系统(OFCS)的综合最大后验均衡和涡轮产品编码(IMAP-TPC)系统,该系统在存在符号间干扰(ISI)和噪声的情况下使用电流的概率特性来补偿它们 影响并提高误码率。 在IMAP-TPC系统中,涡轮乘积代码(TPC)解码与逐符号最大后验(MAP)检测器集成。 MAP检测器使用条件电气概率密度信息计算接收符号的对数似然比,因此获得比TPC解码器中使用的传统测量更准确的可靠性度量。