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
    Event2011 Information Theory and Applications Workshop, ITA 2011 - San Diego, CA, United States
    Duration: 2011 Feb 62011 Feb 11

    Publication series

    Name2011 Information Theory and Applications Workshop, ITA 2011 - Conference Proceedings

    Other

    Other2011 Information Theory and Applications Workshop, ITA 2011
    Country/TerritoryUnited 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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