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一种新颖的Multi-h CPM信号符号速率盲估计算法
张韬
0
(西南电子电信技术研究所,成都 610041)
摘要:
针对非合作条件下Multi-h连续相位调制(CPM)信号符号速率的盲估计问题,提出 了一种新颖的预滤波二次谱算法,通过对接收信号滤波然后搜索其二次谱的峰值实现Multi -h CPM信号符号速率的估计,并利用CPM信号的PAM展开表达式解释了算法的原理。仿真实 验结果表明,该算法是无偏的,与基于循环谱分析的算法相比具有运算量小的优点,并且适 用于各种类型的Multi-h CPM信号,同时不需要载波频率和调制指数的先验信息,具有很强 的鲁棒性。
关键词:  Multi-h CPM信号  符号速率  参数估计  盲估计
DOI:
基金项目:
A novel symbol rate blind estimation algorithm for Multi-h CPM signal
ZHANG Tao
()
Abstract:
A low complex algorithm for symbol rate estimation of Multi-h CPM(Continuous-P hase Modulated) signal is pr esented.The main contribution in this paper is that a prefilter and sq uare estimator is derived and its principle is explained using PAM decomposition of Multi-h CPM signal.Computer simulation results show the unbiased estimator is robust and it does not need prior informations of carry frequence and modulat e index.
Key words:  multi-h CPM  symbol rate  parameter estimation  blind estimation