摘要
在加性白高斯信道下,比较了补码键控最优译码和大数逻辑软判决译码的性能,分析了补码键控在衰落信道的性能,并提出了补码键控外层级联低密度极性校验码的结构,提供了补码键控的软判决输出算法,仿真结果证明补码键控外层级联低密度极性校验码在衰落信道下有明显的性能增益。
In this thesis, the performance of complementary code keying is compared between optimal decoding and majority logic decoding algorithm, and analyzed in fading channels. A structure concatenating low-density parity-check code and complementary code keying and the algorithm of soft-decision output for complementary code keying are presented, the simulation result show more better performance than complementary code keying in rayleigh fading channels.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2003年第5期578-582,共5页
Journal of University of Electronic Science and Technology of China
基金
国家"863"计划资助项目
编号:2001AA1230131
关键词
补码键控
低密度极性校验码
外码级联
大数逻辑译码
最大似然译码
complementary code keying
low-density parity-check
outer code concatenated
majority logic decoding
maximum likelihood decoding
