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Erschienen in: Wireless Personal Communications 4/2016

01.06.2016

An Accurate and Very Low Complexity LMMSE Channel Estimation Technique for OFDM Systems

verfasst von: Abdelhakim Khlifi, Ridha Bouallegue

Erschienen in: Wireless Personal Communications | Ausgabe 4/2016

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Abstract

In this paper, we propose a very low linear minimum mean square error (LMMSE) channel estimation technique for orthogonal frequency division multiplexing (OFDM) systems. The conventional LMMSE, based on the autocorrelation channel matrix, requires \(O(N_P^3)\) operations (\(N_P\) represents the total number pilot in one OFDM symbol). By exploiting the structure of the channel autocorrelation matrix, we propose a very low complexity LMMSE channel estimator which requires only \(O(N_PlogN_P)\) operations. Simulation results show that the proposed technique yields the same performances as well as the classical LMMSE in terms of bit error rate and mean square error.

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Metadaten
Titel
An Accurate and Very Low Complexity LMMSE Channel Estimation Technique for OFDM Systems
verfasst von
Abdelhakim Khlifi
Ridha Bouallegue
Publikationsdatum
01.06.2016
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 4/2016
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-016-3219-7

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