Joint multiple-access channel effective order and CIR estimation algorithm for multi-user OFDM/SDMA system
Authors: Li, S.Z., Zhang, Z., Mu, X.M. and Zhang, J.K.
Journal: Applied Mechanics and Materials
Volume: 548-549
Pages: 1227-1230
eISSN: 1662-7482
ISBN: 9783038350842
ISSN: 1660-9336
DOI: 10.4028/www.scientific.net/AMM.548-549.1227
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/spacedivision 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. © (2014) Trans Tech Publications, Switzerland.
Source: Scopus