无线电通信技术Issue(6)：46-49,4.DOI:10.3969/j.issn.1003-3114.2015.06.12
基于可靠度的连续相位软解调算法及仿真
Reliability-Based Soft Demodulating Algorithm for CPM and its Simulation Results
杨勇 1张凯1
作者信息
- 1. 西安烽火电子科技有限责任公司，陕西 西安710075
- 折叠
摘要
Abstract
Continuous⁃Phase Modulation has been widely used in different communication systems due to the advantages like high spectrum utilization,low side⁃lobe power and constant envelope. However the probabilistic demodulating algorithm for CPM has high computational complexity and is not adaptive to practice.For this problem,the CPM technology is discussed,and further a reliability⁃based soft demodulating algorithm for CPM is proposed. The proposed reliability⁃based demodulating algorithm takes the mutual correlation between received signal and modulated signal as information metric. The algorithm is independent of variance of channel noise,which avoiding the effect of inaccurate estimate of channel. Simulation results show that, the reliability⁃based demodulating algorithm performs as well as the probabilistic demodulating algorithm,and can be combined with LDPC codes to improve the reliability of communication system.关键词
连续相位调制/前向纠错码/格图/可靠度信息Key words
Continuous-Phase Modulation/Forward-Error-Correction/trellis/reliability information分类
信息技术与安全科学引用本文复制引用
杨勇,张凯..基于可靠度的连续相位软解调算法及仿真[J].无线电通信技术,2015,(6):46-49,4.
