Method and system for modifying branch metric of Viterbi decoder for uncorrelated signals
    1.
    发明申请
    Method and system for modifying branch metric of Viterbi decoder for uncorrelated signals 审中-公开
    用于修改维特比解码器用于不相关信号的分支度量的方法和系统

    公开(公告)号:US20050141651A1

    公开(公告)日:2005-06-30

    申请号:US10867273

    申请日:2004-06-14

    摘要: The present disclosure provides simple methods and systems for generating modified branch metrics for the Viterbi decoder so that the decoder can decode the uncorrelated incoming signals without the influence of either the signal power level or the noise variance. The proposed branch metrics noticeably improve the performance of the Viterbi algorithm in such cases. The present disclosure also provides methods and systems for reducing the length of the demodulated symbols for efficient computation. In an exemplary method, it is shown that the only requirement of the proposed modified branch metric, in addition to the traditional branch metric requirements, is the computation of the noise energy. In another exemplary system, an arrangement of circuit modules offers an implementation of one of the embodiments of the proposed method.

    摘要翻译: 本公开提供了用于生成用于维特比解码器的修改的分支度量的简单方法和系统,使得解码器可以在不受信号功率电平或噪声方差的影响的情况下解码不相关的输入信号。 在这种情况下,所提出的分支度量显着提高了维特比算法的性能。 本公开还提供了用于减少用于有效计算的解调符号的长度的方法和系统。 在示例性方法中,示出了除了传统的分支度量要求之外,所提出的修改的分支度量的唯一要求是噪声能量的计算。 在另一示例性系统中,电路模块的布置提供了所提出的方法的实施例之一的实现。