2-Step QRM-MLBD using detection ordering for single-carrier transmission

Katsuhiro Temma, Tetsuya Yamamoto, Fumiyuki Adachi

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

    Abstract

    2-step maximum likelihood block signal detection employing QR decomposition and M-algorithm (QRM-MLBD) can significantly improve the bit error rate (BER) performance of single-carrier (SC) transmission while reducing the computational complexity compared to maximum likelihood detection (MLD). In 2-step QRM-MLBD, unreliable symbol candidates are removed by performing minimum mean square error based frequency-domain equalization (MMSE-FDE) prior to QRM-MLBD. However, a large number M of surviving paths is still required in the M-algorithm to achieve a BER performance close to the matched filter (MF) bound. In this paper, to remedy this problem, we introduce a detection ordering to 2-step QRM-MLBD. We will show by computer simulation that the use of detection ordering can achieve the same BER performance as 2-step QRM-MLBD while reducing the computational complexity.

    Original languageEnglish
    Title of host publicationIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
    DOIs
    Publication statusPublished - 2012
    EventIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Yokohama, Japan
    Duration: 2012 May 62012 Jun 9

    Publication series

    NameIEEE Vehicular Technology Conference
    ISSN (Print)1550-2252

    Other

    OtherIEEE 75th Vehicular Technology Conference, VTC Spring 2012
    Country/TerritoryJapan
    CityYokohama
    Period12/5/612/6/9

    Keywords

    • M-algorithm
    • MMSE-FDE
    • QR decomposition
    • component; Single-carrier
    • near maximum likelihood detection

    ASJC Scopus subject areas

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

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