Robust carrier frequency offset estimation for OFDM systems in doppler shift channels

被引：1
|
作者：
Choi, Jinyong [1 ]
Baek, Jongseob [2 ]
Seo, Jongsoo [1 ]
机构：
[1] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea
[2] Georgia Technol, Dept Elect & Comp Engn, Atlanta, GA 30309 USA
来源：
IEICE ELECTRONICS EXPRESS | 2010年 / 7卷 / 23期
关键词：
Carrier frequency offset; frequency offset estimation; inter-carrier interference; orthogonal frequency division multiplexing;
D O I：
10.1587/elex.7.1747
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 robust carrier frequency offset (CFO) estimation scheme is proposed for OFDM systems in Doppler shift channels. We first present a training symbol (TS) pattern that has the same value so as to provide a wide CFO estimation range and to ensure the accuracy of the CFO estimation. Using the TS, we then present maximum-Likelihood (ML) and averaging least square (LS) algorithms for performing acquisition and tracking steps of the CFO estimation. The performance of the proposed technique is evaluated with respect to a mean-square-error (MSE) and a bit-error-rate (BER) in a typical urban (TU) channel.
引用
收藏
页码：1747 / 1751
页数：5
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