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Title: Performance evaluation of IB-DFE-based strategies for SC-FDMA systems
Authors: Dinis, Rui
Silva, Adão
Assunção, José
Gameiro, Atílio
Keywords: SC-FDMA
Multi-user separation
Cellular systems
Issue Date: 2013
Publisher: Springer
Citation: Silva, A., Assunção, J., Dinis, R. et al. J Wireless Com Network (2013) 2013: 292.
Abstract: The aim of this paper is to propose and evaluate multi-user iterative block decision feedback equalization (IB-DFE) schemes for the uplink of single-carrier frequency-division multiple access (SC-FDMA)-based systems. It is assumed that a set of single antenna users share the same physical channel to transmit its own information to the base station, which is equipped with an antenna array. Two space-frequency multi-user IB-DFE-based processing are considered: iterative successive interference cancellation and parallel interference cancellation. In the first approach, the equalizer vectors are computed by minimizing the mean square error (MSE) of each individual user, at each subcarrier. In the second one, the equalizer matrices are obtained by minimizing the overall MSE of all users at each subcarrier. For both cases, we propose a simple yet accurate analytical approach for obtaining the performance of the discussed receivers. The proposed schemes allow an efficient user separation, with a performance close to the one given by the matched filter bound for severely time-dispersive channels, with only a few iterations.
Peer Reviewed: yes
metadata.dc.identifier.doi: 10.1186/1687-1499-2013-292
ISSN: 1687-1499
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Appears in Collections:DCT - Artigos/Papers

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