A low complexity iterative soft-decision feedback MMSE-PIC detection algorithm for massive MIMO

L. Fang, Lu Xu, Qinghua Guo, David Huang, S. Nordholm

    Research output: Chapter in Book/Conference paperConference paperpeer-review

    11 Citations (Scopus)

    Abstract

    © 2015 IEEE. In MIMO applications, the minimum mean square error parallel interference cancellation (MMSE-PIC) based Soft-Input Soft-Output (SISO) detector has been widely adopted because of its low complexity and good bit error rate (BER) performance. In this paper, we firstly propose to use a Gaussian model based MMSE detection algorithm to implement MMSE-PIC with low complexity. This algorithm, which can detect a length-Nr received data block by a single Hermitian matrix (sized Nt × Nt) inversion, is especially preferable in Massive MIMO up-link applications where the number of transmit antennas Nt from each end terminal is much less than the number of receive antennas Nr in the Base Station. Then we derive a new method to calculate the matrix inversion by a linear combination of two matrices, which reduces the complexity from O(Nt 3) to O(Nt 2). At last, in order to improve the system performance for the first pass when there is no a priori information available, a self-iteration method is proposed and thus a system performance gain of 1dB to 2dB is achieved at the cost of modest complexity increase.
    Original languageEnglish
    Title of host publicationIEEE International Conference on Acoustics, Speech and Signal Processing
    Place of PublicationUSA
    PublisherWiley-IEEE Press
    Pages2939-2943
    Volume2015-August
    ISBN (Print)9781467369978
    DOIs
    Publication statusPublished - 2015
    Event2015 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2015 - Brisbane, Australia
    Duration: 19 Apr 201524 Apr 2015

    Conference

    Conference2015 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2015
    Abbreviated titleICASSP 2015
    Country/TerritoryAustralia
    CityBrisbane
    Period19/04/1524/04/15

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