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access icon openaccess Preamble-aided time delay estimation in frequency selective channels for wireless OFDM systems

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.

http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2014.0171
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content/journals/10.1049/joe.2014.0171
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