Coordinated multi-cell MU-MIMO downlink transmission with adaptive beam deactivation

Jin Hee Lee, Young Chai Ko, Seyeong Choi, Hong Chuan Yang, Sungjin Kim

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

    1 Citation (Scopus)

    Abstract

    In this paper, we propose an adaptive beam deactivation scheme for the coordinated multi-cell multiuser multiple-input multiple-output (MU-MIMO) downlink system with limited feedback. In the proposed scheme, each user feeds back the indices of a desired beam and multiple undesired beams from its codebook and some channel quality indicators to its base station (BS). Based on the feedback information and the proposed transmitting user set selection algorithm, the coordinating BSs select one user for each BS to serve. Through the numerical example, we show that the proposed scheme achieves comparable sum rate gain compared to the conventional zeroforcing based coordinated multi-cell system with reduced feedback load.

    Original languageEnglish
    Title of host publication2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob'2011
    Pages199-203
    Number of pages5
    DOIs
    Publication statusPublished - 2011
    Event2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob'2011 - Shanghai, China
    Duration: 2011 Oct 102011 Oct 12

    Publication series

    NameInternational Conference on Wireless and Mobile Computing, Networking and Communications
    ISSN (Print)2161-9646
    ISSN (Electronic)2161-9654

    Other

    Other2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob'2011
    Country/TerritoryChina
    CityShanghai
    Period11/10/1011/10/12

    Keywords

    • Multi-cell wireless system
    • adaptive beam deactivation
    • cell cooperation
    • inter-cell interference
    • zeroforcing beamforming

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Hardware and Architecture
    • Software

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