A New Cyclic-Prefix Based Algorithm for Blind CFO Estimation in OFDM Systems

被引：18
|
作者：
Lin, Tzu-Chiao [1 ]
Phoong, See-May [1 ]
机构：
[1] Natl Taiwan Univ, Grad Inst Commun Engn, Dept EE, Taipei 10617, Taiwan
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2016年 / 15卷 / 06期
关键词：
Orthogonal frequency division multiplexing (OFDM); carrier frequency offset (CFO); cyclic prefix (CP); blind estimation; CARRIER FREQUENCY OFFSET; SYNCHRONIZATION; TIME; MIMO;
D O I：
10.1109/TWC.2016.2532325
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a new algorithm based on cyclic prefix (CP) is proposed for blind carrier frequency offset (CFO) estimation in orthogonal frequency division multiplexing (OFDM) transmission over multipath channels. Like other CP-based methods, the proposed method enjoys low complexity. The proposed method is very robust to the symbol timing synchronization error. Closed form formulas for CFO estimates are derived. In addition, we also carry out the theoretical mean-square-error analysis and derive the Cramer-Rao bound. Simulation results show that the proposed method performs very well.
引用
收藏
页码：3995 / 4008
页数：14
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