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Using Real Constellations in Fully- and Over-loaded Large MU-MIMO Systems with Simple Detection

Ma, Y, De Luna Ducoing, JC, Yi, N and Tafazolli, R (2015) Using Real Constellations in Fully- and Over-loaded Large MU-MIMO Systems with Simple Detection IEEE Wireless Communications Letters, PP (99).

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Abstract

The aim of this letter is to exhibit some advantages of using real constellations in large multi-user (MU) MIMO systems. It is shown that a widely linear zero-forcing (WLZF) receiver with M-ASK modulation enjoys a spatial-domain diversity gain, which linearly increases with the MIMO size even in fully- and over-loaded systems. Using the decision of WLZF as the initial state, the likelihood ascent search (LAS) achieves nearoptimal BER performance in fully-loaded large MIMO systems. Interestingly, for coded systems, WLZF shows a much closer BER to that of WLZF-LAS with a gap of only 0:9-2 dB in SNR.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Authors :
AuthorsEmailORCID
Ma, YUNSPECIFIEDUNSPECIFIED
De Luna Ducoing, JCUNSPECIFIEDUNSPECIFIED
Yi, NUNSPECIFIEDUNSPECIFIED
Tafazolli, RUNSPECIFIEDUNSPECIFIED
Date : 15 November 2015
Identification Number : 10.1109/LWC.2015.2501807
Additional Information : © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Depositing User : Symplectic Elements
Date Deposited : 26 Jan 2016 15:10
Last Modified : 26 Jan 2016 15:10
URI: http://epubs.surrey.ac.uk/id/eprint/809615

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