A vector perturbation based user selection for multi-antenna downlink channels

Byungju Lee, Byonghyo Shim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Recent works on multi-user transmission techniques have shown that the linear growth of capacity in single user MIMO system can be translated to the multi-user MIMO scenario as well. In this paper, we propose a method pursuing performance gain of vector perturbation in multi-user downlink channels. Instead of exploiting the maximum available mobile users for communication, we employ small part of them as sacrifice lambs for improving quality of service (QoS) of active users. By controlling information and perturbation vector of sacrificing users, we get considerable improvement in the effective SNR, resulting in large gain in bit error performance. Simulation results show that the proposed method brings substantial performance gain over the standard vector perturbation.

Original languageEnglish
Title of host publication2011 Information Theory and Applications Workshop, ITA 2011 - Conference Proceedings
Pages357-360
Number of pages4
DOIs
Publication statusPublished - 2011 May 13
Event2011 Information Theory and Applications Workshop, ITA 2011 - San Diego, CA, United States
Duration: 2011 Feb 62011 Feb 11

Other

Other2011 Information Theory and Applications Workshop, ITA 2011
CountryUnited States
CitySan Diego, CA
Period11/2/611/2/11

Keywords

  • Multi-user downlink
  • noninteger least square
  • sacrifice lambs
  • transmit precoding
  • vector perturbation

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Science Applications
  • Information Systems

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  • Cite this

    Lee, B., & Shim, B. (2011). A vector perturbation based user selection for multi-antenna downlink channels. In 2011 Information Theory and Applications Workshop, ITA 2011 - Conference Proceedings (pp. 357-360). [5743603] https://doi.org/10.1109/ITA.2011.5743603