UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

A constellation scaling approach to vector perturbation for adaptive modulation in MU-MIMO

Li, A; Masouros, C; (2015) A constellation scaling approach to vector perturbation for adaptive modulation in MU-MIMO. IEEE Wireless Communications Letters , 4 (3) pp. 289-292. 10.1109/LWC.2015.2410271. Green open access

[thumbnail of Li_WCL2015-0054.pdf]
Preview
Text
Li_WCL2015-0054.pdf
Available under License : See the attached licence file.

Download (108kB)

Abstract

It is known that vector perturbation (VP) precoding does not apply to the case where users employ different modulations, while existing solutions for this scenario are suboptimal. In this letter, a joint vector perturbation precoding algorithm is proposed for multiuser MIMO (MU-MIMO) downlink system in the adaptive modulation scenario where different users apply different modulation types. Compared with conventional block diagonalized vector perturbation (BD-VP) and user grouping VP where the search dimension of the perturbation vector is reduced, the proposed algorithm keeps the search dimension unchanged by applying a simple transformation to the VP operation. Our analysis and results show that the proposed algorithm provides an applicable VP solution to the adaptive modulation scenario, with optimal VP performance.

Type: Article
Title: A constellation scaling approach to vector perturbation for adaptive modulation in MU-MIMO
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/LWC.2015.2410271
Publisher version: http://dx.doi.org/10.1109/LWC.2015.2410271
Language: English
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.
Keywords: adaptive modulation, joint perturbation, MIMO, precoding, vector perturbation
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1464066
Downloads since deposit
187Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item