A new reduced-complexity adaptive PSP-MLSE receiver for GSM/EDGE systems

Zhenhong Li, Olli Piirainen, Aarne Mämmelä

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

    7 Citations (Scopus)

    Abstract

    A new adaptive reduced-complexity MLSE receiver based on per-survivor processing (PSP-MLSE) and a decision feedback equalizer (DFE) for GSM/EDGE system with 8PSK modulation is proposed. The initial channel impulse response (CIR) is estimated by the LS algorithm with a mid-amble and updated by the LMS algorithm during data transmission. The proposed scheme handles the first part of the sampled CIR by the PSP-MLSE and the rest by the DFE for complexity reduction. Instead of the conventional global DFE (decision per sample), the local DFE (decision per state/survivor) is suggested to reduce error propagation. A good tradeoff between performance and complexity, by retaining the PSP-MLSE for good performance and using the local DFE for intersymbol interference cancellation, is obtained. Computer simulations indicate that the PSP-MLSE with the local DFE is clearly superior to that with the global DFE, especially in severe ISI channels.
    Original languageEnglish
    Title of host publication12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Print)0-7803-7244-1
    DOIs
    Publication statusPublished - 2001
    MoE publication typeA4 Article in a conference publication
    Event12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2001 - San Diego, United States
    Duration: 30 Sep 20013 Oct 2001

    Conference

    Conference12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2001
    Abbreviated titlePIMRC 2001
    CountryUnited States
    CitySan Diego
    Period30/09/013/10/01

    Keywords

    • GSM
    • data communication
    • maximum likelihood estimation
    • delay
    • interference cancellation
    • binary phase shift keying
    • computer errors
    • decision feedback equalizers

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  • Cite this

    Li, Z., Piirainen, O., & Mämmelä, A. (2001). A new reduced-complexity adaptive PSP-MLSE receiver for GSM/EDGE systems. In 12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001 IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/PIMRC.2001.965505