Performance of vector perturbation multiuser MIMO systems with limited feedback

Daniel J. Ryan*, Iain B. Collings, I. Vaughan L Clarkson, Robert W. Heath

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 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 multiuser technique known as vector perturbation.We propose latticetheoretic and rate-distortion based approaches to analyze the performance of these systems, taking into account the practical restrictions imposed by limited feedback and training. We show that performance is primarily determined by the ratio between the number of users and the number of transmit antennas. We then propose a new practical low-complexity low-rate feedback scheme, and show that the performance approaches the ideal rate-distortion based scheme.

Original languageEnglish
Pages (from-to)2633-2644
Number of pages12
JournalIEEE Transactions on Communications
Volume57
Issue number9
DOIs
Publication statusPublished - 2009
Externally publishedYes

Keywords

  • Broadcast channel
  • Limited feedback
  • MIMO systems
  • Multiuser
  • Vector perturbation
  • Vector precoding
  • Wireless communications

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