Ghogho, M. and Swami, A. (2002) Blind frequency-offset estimator for OFDM systems transmitting constant-modulus symbols. IEEE Communications Letters, 6 (8). pp. 343-345. ISSN 1089-7798Full text available as:
Available under License : See the attached licence file.
We address the problem of carrier frequency offset (CFO) synchronization in OFDM communications systems in the context of frequency-selective fading channels. We consider the case where the transmitted symbols have constant modulus, i.e., PSK constellations. A novel blind CFO estimation algorithm is developed. The new algorithm is shown to greatly outperform a recently published blind technique that exploits the fact that practical OFDM systems are not fully loaded. Further, the proposed algorithm is consistent even when the system is fully loaded. Finally, the proposed CFO estimator is obtained via a one-dimensional search, the same as with the existing virtual subcarrier-based estimator, but achieves a substantial gain in performance (10-dB SNR or one order of magnitude in CFO MSE).
|Copyright, Publisher and Additional Information:||Copyright © 2002 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
|Academic Units:||The University of Leeds > Faculty of Engineering (Leeds) > School of Electronic & Electrical Engineering (Leeds)|
|Depositing User:||Sherpa Assistant|
|Date Deposited:||30 Sep 2005|
|Last Modified:||08 Feb 2013 17:02|
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