This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)
In this Letter, an improved method for estimating the time delay in preamble-aided orthogonal frequency division multiplexing systems is presented. It uses a conventional preamble structure and combines cross-correlation techniques to achieve estimations of time delay and the number of multipaths without any additional overhead. Computer simulations results show that the proposed method is of near-ideal property in frequency-selected channels.
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B. Yang ,
K.B. Letaief ,
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Channel estimation for OFDM transmission in multipath fading channels based on parametric channel modeling.
IEEE Trans. Commun.
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3 ,
467 -
479
http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2014.0171
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