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A Robust Periodogram-Based IFO Estimation Scheme for OFDM-Based Wireless Systems

Authors:
Seung Goo Kang
Dahae Chong
Youngyoon Lee
Seokho Yoon

Keywords: estimation; frequency offset; OFDM; training symbol

Abstract:
In this paper, we propose a new periodogram-based integer frequency offset (IFO) estimation scheme robust to the fractional frequency offset (FFO) variation. We first observe the reason why the conventional IFO estimation scheme in [10] is sensitive to the variation of the FFO, and then, propose a new IFO estimation scheme using the modified maximum-likelihood (ML) metric. The numerical results demonstrate that the proposed scheme is more robust to the variation of the FFO and has better IFO estimation performance than the conventional scheme in [10].

Pages: 43 to 46

Copyright: Copyright (c) IARIA, 2011

Publication date: April 17, 2011

Published in: conference

ISSN: 2308-4022

ISBN: 978-1-61208-126-7

Location: Budapest, Hungary

Dates: from April 17, 2011 to April 22, 2011