IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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Robust carrier frequency offset estimation for OFDM systems in doppler shift channels
Jinyong ChoiJongseob BaekJongsoo Seo
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2010 Volume 7 Issue 23 Pages 1747-1751

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Abstract

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.

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© 2010 by The Institute of Electronics, Information and Communication Engineers
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