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http://dx.doi.org/10.7840/KICS.2012.37A.5.298

OFDM Frequency Offset Estimation Schemes Robust to the Non-Gaussian Noise  

Park, Jong-Hun (삼성탈레스)
Yu, Chang-Ha (성균관대학교 정보통신대학 전자전기공학부)
Yoon, Seok-Ho (성균관대학교 정보통신대학 전자전기공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.5A, 2012 , pp. 298-304 More about this Journal
Abstract
In this paper, we propose robust estimators for the frequency offset of orthogonal frequency division multiplexing in non-Gaussian noise environments. We first propose a maximum-likelihood (ML) estimator in non-Gaussian noise modeled as a complex isotropic Cauchy process, and then, we present a simpler suboptimal estimator based on the ML estimator. From numerical results, it is demonstrated that the proposed estimators not only outperform the conventional estimators, but also have a robustness in non-Gaussian noise environments.
Keywords
OFDM; Non-Gaussian Noise;
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