基于自相关相位差的载波恢复算法的性能分析  

Performance Analysis of a Differenced Autocorrelation Phase Based Carrier Frequency Recovery Algorithm

作　　者：杨萃[1] 

机构地区：[1]华南理工大学电信学院,广州510640

出　　处：《科学技术与工程》2009年第21期6348-6352,共5页Science Technology and Engineering

基　　金：国家自然科学青年基金(60502041)资助

摘　　要：对一种基于自相关函数相位差的频率估计算法进行了误差理论分析,得到了估计误差极限,提供了算法参数选择的依据,并给出了该算法DSP实现电路。理论分析和仿真结果均表明该算法不仅频率估计范围比较宽,且性能逼近CRB(Cramer Rao Bound)界,可以应用于TDMA通信系统及OFDM系统的载波恢复中。The theoretical estimation error of a correlation based frequency estimator is deduced which offers the criterion for choosing parameters in different applications. And the DSP implement of the estimator is given. The theoretical analysis and simulation results show that the algorithm has a wide acquisition range and its performance approaches the CRB （ Cramer Rao Bound）. The algorithm can be applied in carrier frequency recovery schemes in TDMA communication systems and OFDM systems.

关 键 词：载波频偏估计 理论误差 均方误差 

分 类 号：TN914.51[电子电信—通信与信息系统]