摘要
在分析现有算法的基础上,提出了一种新的算法,并对其进行了仿真.仿真结果表明,无论是在多径信道还是在AWGN信道,该算法的定时估计和频率偏移估计的均方差都要优于最大似然算法和"集相关"算法.
OFDM is sensitive to timing recovery and frequency offset estimation, and current non-data-aided estimation methods don't work well on multipath channel. Based on the analysis of the current methods, a new method is proposed and simulated. The simulation results show that the mean square error of the timing and frequency offset estimation for proposed method is superior to that of the maximum likelihood and ensemble correlation methods.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2004年第1期36-39,共4页
Journal of Beijing University of Posts and Telecommunications
关键词
OFDM
定时估计
频率偏移估计
正交频分复用
第三代移动通信系统
Computer simulation
Numerical methods
Orthogonal frequency division multiplexing
Signal processing
Signal to noise ratio
