An application of time division multiplexing on multi-user MIMO THP systems in the presence of high mobility terminals

Yunhan Wang, Manato Shimizu, Fumiaki Maehara, Fumio Takahata

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

    Abstract

    Multi-user MIMO (MU-MIMO) employing Tomlinson Harashima Precoding (THP) is a powerful technique to enhance the system capacity in multi-user mobile communications systems. However, MU-MIMO has an inherent drawback in the degradation of the transmission performance due to the time variant fading channels which are caused by the mobility of the mobile station (MS). Considering that MU-MIMO is mainly applied to mobile communications systems, the performance degradation due to this terminal mobility has to be solved. This paper proposes a novel MU-MIMO THP transmission scheme for the sake of alleviating the performance degradation due to the terminal mobility. The feature of the proposed approach is to incorporate the concept of time division multiplexing (TDM) into MU-MIMO THP system, which enables the transmission of high mobility user to take precedence over that of the lower mobility user. Thanks to the use of TDM, the proposed scheme exploits the space diversity benefit because TDM decreases the number of MSs within a time slot. The effectiveness of the proposed scheme is demonstrated in comparison with the traditional MU-MIMO THP scheme by means of computer simulations.

    Original languageEnglish
    Title of host publicationIEEE Vehicular Technology Conference
    DOIs
    Publication statusPublished - 2011
    EventIEEE 74th Vehicular Technology Conference, VTC Fall 2011 - San Francisco, CA
    Duration: 2011 Sep 52011 Sep 8

    Other

    OtherIEEE 74th Vehicular Technology Conference, VTC Fall 2011
    CitySan Francisco, CA
    Period11/9/511/9/8

    Fingerprint

    Multiuser MIMO
    Time division multiplexing
    Precoding
    Multiplexing
    MIMO systems
    Division
    Degradation
    Mobile telecommunication systems
    Mobile Communication
    Mobile Systems
    Communication Systems
    Fading Channels
    Fading channels
    Computer Simulation
    Decrease
    Computer simulation

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Computer Science Applications
    • Applied Mathematics

    Cite this

    An application of time division multiplexing on multi-user MIMO THP systems in the presence of high mobility terminals. / Wang, Yunhan; Shimizu, Manato; Maehara, Fumiaki; Takahata, Fumio.

    IEEE Vehicular Technology Conference. 2011. 6093046.

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

    Wang, Y, Shimizu, M, Maehara, F & Takahata, F 2011, An application of time division multiplexing on multi-user MIMO THP systems in the presence of high mobility terminals. in IEEE Vehicular Technology Conference., 6093046, IEEE 74th Vehicular Technology Conference, VTC Fall 2011, San Francisco, CA, 11/9/5. https://doi.org/10.1109/VETECF.2011.6093046
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