Low-complexity partitioned-spreading CDMA system with multistage MMSE reception

Zhenning Shi*, Mark C. Reed

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Citation (Scopus)

    Abstract

    In this paper, we propose a low-complexity multistage filter for the partitioned-spreading CDMA (PS-CDMA). The proposed method embodies a MMSE filter that operates on the soft output of interference cancellation. Extrinsic information on the partitioned symbol is exchanged between the MMSE filter and the partitioned-spreading APP detector to improve the system performance. It is shown via variance evolution the signal-to-noise ratio of this novel technique achieves that of the single-user channel even for heavily loaded systems. It also outperforms IDMA by a fraction of dB to a few dBs, for a variety of system loads.The complexity of the proposed system is much lower that of its counterparts for conventional CDMA, which makes it a viable alternative for future 3G or beyond 3G systems.

    Original languageEnglish
    Title of host publication2006 IEEE Wireless Communications and Networking Conference, WCNC 2006
    Pages2012-2017
    Number of pages6
    Publication statusPublished - 2006
    Event2006 IEEE Wireless Communications and Networking Conference, WCNC 2006 - Las Vegas, NV, United States
    Duration: 3 Apr 20066 Apr 2006

    Publication series

    NameIEEE Wireless Communications and Networking Conference, WCNC
    Volume4
    ISSN (Print)1525-3511

    Conference

    Conference2006 IEEE Wireless Communications and Networking Conference, WCNC 2006
    Country/TerritoryUnited States
    CityLas Vegas, NV
    Period3/04/066/04/06

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