舰船电子工程2019，Vol.39Issue(4)：64-67,137,5.DOI:10.3969/j.issn.1672-9730.2019.04.014
一种简化的16QAM软解映射算法
A Simplified Soft Demapping Algorithm for 16QAM Modulation
兰霞1
作者信息
- 1. 中国西南电子技术研究所 成都 610036
- 折叠
摘要
Abstract
A simplified soft demapping algorithm for 16QAM modulation is proposed,which is used for soft-decision LDPC7/8 decoding. In this way it can increase spectral efficiency. According to the signal amplitude in the coordinate system,the proposed algorithm can give the 4bit soft decision of 16QAM using addition and subtraction easily. The experimental result shows that the pro?posed algorithm can reduce computational complexity and decrease the hardware resources of giving soft decision. Thus,it is easy to design in project. Also,the decoding performance is satisfied.关键词
16QAM/LLR/高阶调制/软信息/LDPC7/8Key words
16QAM/LLR/higher-order modulation/soft metric/LDPC7/8分类
信息技术与安全科学引用本文复制引用
兰霞..一种简化的16QAM软解映射算法[J].舰船电子工程,2019,39(4):64-67,137,5.
