一种新颖的全响应CPM信号载波频偏同步法  

A Novel Carrier Frequency Synchronization Algorithm for Full-Response CPM Signals

作　　者：白传芳[1,2] 陈其先[1] 邓亮[1] 彭博 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007 [2]解放军61345部队,陕西西安710100

出　　处：《通信对抗》2008年第1期35-37,共3页Communication Countermeasures

摘　　要：连续相位调制（CPM）具有许多线性调制法难以比拟的优势，但是其接收机实现复杂度高，信号同步困难。通过对CPM信号相位的分析研究找到相位变化特殊点，在这些点上相位的影响仅由频偏决定。据此提出了一种基于2P幂-滑动观测窗的快速收敛频偏估计算法。仿真表明，在系统开销较小的情况下该算法能很快实现精度足够的载波同步。Continuous phase modulation （CPM） scheme enjoys lots of advantages comparing to linear modulation methods. But it＇s a pity that CPM signals are hard to receive because of its complexity and its synchronous algorithm. With the study of CPM, some special phase points can be found, where the phase character only depends on the frequency jitter. A fast convergent frequency estimate algorithm is proposed upon the special points. Computer simulations show that the algorithm provides a perfect performance with low complexity.

关 键 词：连续相位调制 相位 滑动窗 频偏估计 

分 类 号：TN934.3[电子电信—信号与信息处理] TP273[电子电信—信息与通信工程]