摘要
基于最大似然准则的非数据辅助(NDA)频偏估计算法,可适用于前馈型结构中,能方便的应用在全数字接收机的载波同步中。利用QPSK信号对其中比较典型的L&R、Fitz和M&M算法进行了计算机仿真验证,仿真结果表明:M&M算法的估计范围大,而Fitz和L&R算法的估计性能好。并为全数字接收机的载波同步实现提供了设计依据。
A none-data-aided （NDA） frequency offset algorithm based on Maximum Likelihood is proposed. It can be applied to forward feed structure that can be easily implemented in carrier synchronization on all-digital receiver. Simulation verified L＆R,Fitz and M＆M algorithms in NDA algorithm for QPSK, and the results show that the M＊M algorithm has wider estimation range. The L＆R and Fitz algorithms have better performance of estimation. These results provide a basis of implementation for carrier synchronization on all-digital receiver.
出处
《桂林电子科技大学学报》
2009年第3期226-228,共3页
Journal of Guilin University of Electronic Technology
关键词
最大似然
非数据辅助
频偏估计
maximum likelihood
none-data-aided
frequency offset estimation
