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

On the SC/FDE Uplink Alternative to OFDM in a Massive MU-MIMO Context

Authors:
Paulo Torres
Luis Charrua
Antonio Gusmao

Keywords: Broadband Wireless Communications; MU-MIMO Systems; Massive MIMO; Performance Evaluation; SC/FDE

Abstract:
This paper deals with SC/FDE as an uplink alternative to OFDM for a MU-MIMO system where a "massive MIMO" approach is adopted. In this context, either an optimum MMSE linear detector or appropriate reduced-complexity linear detection techniques are considered. Regarding performance evaluation by simulation, two semi-analytical methods are proposed - one method in the optimum (MMSE) case and the other one in the reduced-complexity cases. This paper includes performance results for uncoded 4-QAM SC/FDE 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. Appropriate "SC/FDE vs OFDM" comparisons are also included in this discussion of performance results.

Pages: 26 to 31

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