Joint Multiple-Access Channel Effective Order and CIR Estimation Algorithm for Multi-User OFDM/SDMA System

Shuang Zhi Li; Zhe Zhang; Xiao Min Mu; Jian Kang Zhang

doi:10.4028/www.scientific.net/AMM.548-549.1227

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 548-549Joint Multiple-Access Channel Effective Order and...

Joint Multiple-Access Channel Effective Order and CIR Estimation Algorithm for Multi-User OFDM/SDMA System

Abstract:

In this paper, a novel joint estimation of channel effective order and channel impulse response (CIR) is presented for multiuser orthogonal frequency division multiplexing/space-division multiple-access (OFDM/SDMA) systems. By exploiting Akaike’s Information Criterion (AIC) as the fitness function to search the optimal order, the proposed scheme performs the channel effective order and CIR estimation in a parallel way based on differential evolution (DE) algorithm. Simulation results demonstrate that the proposed scheme is capable of attaining a better mean square error performance than the fixed channel order scheme, and improving the performance of time-domain maximum likelihood (ML) channel estimator.

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Periodical:

Applied Mechanics and Materials (Volumes 548-549)

Pages:

1227-1230

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.548-549.1227

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Online since:

April 2014

Authors:

Shuang Zhi Li, Zhe Zhang, Xiao Min Mu, Jian Kang Zhang

Keywords:

Akaike’s Information Criterion, Channel Effective Order, Channel Estimation, Differential Evolution, OFDM/SDMA

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