Sum rates and user scheduling for multi-user MIMO vector perturbation precoding

Adeel Razi*, Daniel J. Ryan, Iain B. Collings, Jinhong Yuan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

5 Citations (Scopus)

Abstract

This paper considers the multiuser multiple-input multiple-output (MIMO) Rayleigh fading broadcast channel. We consider the case where the multiple transmit antennas are used to deliver independent data streams to multiple users via a multi-user technique known as vector perturbation. We derive expressions for the capacity in terms of the average energy of the precoded vector, and use this to derive a closed-form high-SNR upper bound, which we show to be tight via simulation. We then turn to the practical issue of user selection. We propose a low-complexity user selection algorithm that attempts to maximize the high-SNR sum rate upper bound. Simulations show that the algorithm outperforms other user selection algorithms of similar complexity.

Original languageEnglish
Title of host publicationProceedings - 2009 IEEE International Conference on Communications, ICC 2009
Place of PublicationPistacaway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-5
Number of pages5
ISBN (Print)9781424434350
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 IEEE International Conference on Communications, ICC - 2009 - Dresden, Germany
Duration: 14 Jun 200918 Jun 2009

Other

Other2009 IEEE International Conference on Communications, ICC - 2009
CountryGermany
CityDresden
Period14/06/0918/06/09

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