基于倾斜相位的CPM信号调制解调设计  

CPM Signals Modulation and Demodulation based on Tilted Phase

作　　者：陈飞[1] 窦高奇[1] 高俊[1] 万志毅 

机构地区：[1]海军工程大学电子工程学院 [2]73698部队

出　　处：《通信技术》2015年第5期541-545,共5页Communications Technology

摘　　要：连续相位调制(CPM)信号是一种具有高频谱效率和功率效率的恒包络调制技术,但基于传统相位网格的CPM信号调制解调算法复杂度高、计算量大。提出了一种基于倾斜相位网格的CPM调制解调算法,通过分析CPM相位网络图和分解模型,给出了CPM信号倾斜相位网格设计、状态存储、初始化及译码的实现方法,相比传统相位,该算法更加简洁、计算量更小,并通过仿真验证了设计方案的正确性。CPM（ Continuous Phase Modulation） signal is a kind of constant-envelope digital modulation with both high spectral and power efficiency,and however,for the high algorithm complexity and large calculation of traditional CPM modulation and demodulation based on phase trellis,a CPM modulation and demodulation algorithm based on tilted-phase trellis is proposed. Based on analysis of CPM phase network plannning and decomposition model,the implementation methods of tilted-phase gridding design,state storage,initialzation and decoding of CPM signals are also given. Compared with traditional phase,the tilted-phase algorithm enjoys less complexity and calculation,and finally the simulation indicates the correctness of this design scheme.

关 键 词：CPM 倾斜相位 调制解调 Vterbi译码 

分 类 号：TN76[电子电信—电路与系统]