Blind Estimation for OFDM Fractional Frequency Offset Over Multipath Channels

被引：7
|
作者：
Liu, Mingqian [1 ]
Li, Bingbing [1 ]
Ge, Jianhua [1 ]
机构：
[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 71007, Peoples R China
来源：
WIRELESS PERSONAL COMMUNICATIONS | 2014年 / 79卷 / 01期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Orthogonal frequency division multiplexing (OFDM); Fractional frequency offset; Inter-symbol interference; Multipath channels; SYSTEMS;
D O I：
10.1007/s11277-014-1845-5
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
To solve the problem of low estimation accuracy for orthogonal frequency division multiplexing (OFDM) fractional frequency offset (FFO) over multipath channels in non-cooperation communication system, a novel blind estimation of OFDM FFO is conceived. The starting position of data sampling points without inter-symbol interference is estimated in the cyclic prefix, and then the frequency offset is estimated by adopting the maximum likelihood criterion. The simulation results demonstrate that the proposed method has better performance than traditional methods, so it is applicable to the noncooperation communication systems.
引用
收藏
页码：119 / 130
页数：12
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