通信学报2018，Vol.39Issue(12)：160-166,7.DOI:10.11959/j.issn.1000-436x.2018278
基于差分复合网格的MSK非相干解调算法
Non-coherent demodulation algorithm of MSK based on differential composite
摘要
Abstract
An algorithm of MSK demodulation based on differential composite grid was proposed. The MSK differential composite grid was constructed by phase deflection, and the optimal path in the composite grid was selected by comparing the likelihood function value to compensate the phase error of the Doppler frequency offset. Theoretical analysis and simulation show that the performance of the algorithm was still close to the theoretical lower bound of the MSK non-coherent demodulation error rate when the phase error caused by the Doppler frequency offset was of the order of 10-1rad magnitude. The algorithm extends the range of MSK demodulation anti-Doppler frequency offset, and is superior to similar algorithm in complexity and decision delay time, slightly higher than 1 symbol differential algorithm corresponding value, which provides a new means for demodulation of MSK under Doppler frequency offset.关键词
多普勒频偏/差分复合网格/最优路径/解调方案Key words
Doppler frequency offset/ differential composite grid/ optimal path/ demodulation scheme分类
信息技术与安全科学引用本文复制引用
田文飚,王鹏,芮国胜,张洋..基于差分复合网格的MSK非相干解调算法[J].通信学报,2018,39(12):160-166,7.基金项目
国家自然科学基金资助项目(No.41476089,No.41606117,No.61671016) （No.41476089,No.41606117,No.61671016）
