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

IEICE Electronics Express

Jinyong Choi¹  Jongsoo Seo¹  Jongseob Baek² 

[1] Department of Electrical and Electronic Engineering, Yonsei University;Department of Electrical and Computer Engineering, Georgia Technology

关键词: Carrier frequency offset;    frequency offset estimation;    inter-carrier interference;    orthogonal frequency division multiplexing;   

DOI  :  10.1587/elex.7.1747

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)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.

【 授权许可】

Unknown