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ThinkMind // ICWMC 2014, The Tenth International Conference on Wireless and Mobile Communications // View article icwmc_2014_1_40_20069


Uplink Performance Evaluation of Broadband Systems which Adopt a Massive MU-MIMO Approach

Authors:
Paulo Torres
Luis Charrua
Antonio Gusmao

Keywords: Broadband Wireless Communications; MU-MIMO Systems; Massive MIMO; Performance Evaluation; OFDM

Abstract:
This paper deals with an OFDM-based uplink within a MU-MIMO system where a "massive MIMO" approach" is adopted. In this context, either an optimum MMSE linear detection or a reduced-complexity MF linear detection are considered. Regarding performance evaluation by simulation, several semi-analytical methods are proposed: one performance evaluation method in the optimum (MMSE) case; two performance evaluation methods in the MF case. This paper includes performance results for uncoded 4-QAM/OFDM transmission and a MU-MIMO channel with uncorrelated Rayleigh fading, under the assumptions of perfect power control and perfect channel estimation. The accuracy of performance results obtained through the semi-analytical simulation methods is assessed by means of parallel conventional Monte Carlo simulations. The performance results are discussed in detail and we also emphasize the achievable "massive MIMO" effects, even for the reduced-complexity detection techniques, provided that the number of BS antennas is much higher than the number of antennas which are jointly employed in the terminals of the multiple autonomous users.

Pages: 14 to 19

Copyright: Copyright (c) IARIA, 2014

Publication date: June 22, 2014

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-347-6

Location: Seville, Spain

Dates: from June 22, 2014 to June 26, 2014

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