使用边际信息降低复杂度的分阶统计软判决译码法

Reduce Complexity of Ordered Statistics Soft-decision Decoding by Side Information

该文给出了在译码端使用边际信息缩小译码列表的算法,深入分析了边际信息缩减译码列表的原因,给出了基于移位寄存器序列的边际信息。相比于使用稳定信道传送边际信息的方法,其不使用额外的信道,不影响译码的性能与复杂度,更易于工程实现。最后改进传统分阶统计译码法,利用少量最可靠位作为边际信息,显著缩减译码列表。

An algorithm of complexity reduction of list decoding is given by using side information.Then in-depth analysis the reasons of complexity reduction and side information based on shift register sequence is provided.Compared with the method of using stable channel transmission side information,it does not use additional channel,and also not affect the decoding performance and complexity,more easy to engineering realization.Finally,the traditional ordered statistic decoding algorithm is improved by using a small amount of the most reliable bits as side information,thus the decoding list is significantly reduced.