Complexity-reduced per-antenna multiple access interference cancellation for DAN using DS-CDMA

S. Inoshita, Hiroyuki Miyazaki, Fumiyuki Adachi

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

    2 Citations (Scopus)

    Abstract

    DS-CDMA allows all accessing users to share the same carrier frequency and hence, can alleviate the sophisticated channel management problem. Recently, we investigated a distributed antenna network (DAN) using direct-sequence code division multiple access (DS-CDMA) with joint antenna diversity and equalization and showed that DAN achieves higher uplink capacity than centralized antenna network (CAN). The uplink capacity is limited due to multiple access interference (MAI). In this paper, to further improve the uplink capacity, we propose a complexity-reduced per-antenna MAI cancellation before diversity combining, which is suitable for DAN using DS-CDMA. In the per-antenna MAI cancellation, first, interfering users on each antenna are sorted in descending order of the instantaneous received power. Then, a predetermined number of interfering users having the highest received powers are selected on each antenna to be cancelled in the frequency-domain before diversity combining. It is shown by computer simulation that per-antenna MAI cancellation before diversity combining achieves almost the same uplink capacity as full MAI cancellation after diversity combining.

    Original languageEnglish
    Title of host publication2014 IEEE 80th Vehicular Technology Conference, VTC2014-Fall, Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781479944491, 9781479944491
    DOIs
    Publication statusPublished - 2014 Nov 24
    Event80th IEEE Vehicular Technology Conference, VTC 2014-Fall - Vancouver, Canada
    Duration: 2014 Sep 142014 Sep 17

    Publication series

    NameIEEE Vehicular Technology Conference
    ISSN (Print)1550-2252

    Other

    Other80th IEEE Vehicular Technology Conference, VTC 2014-Fall
    Country/TerritoryCanada
    CityVancouver
    Period14/9/1414/9/17

    Keywords

    • CCI; TPC
    • DAN
    • DS-CDMA
    • MAI cancellation
    • Uplink capacity

    ASJC Scopus subject areas

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

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