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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  Blind identification of SIMO systems and simultaneous estimation of multiple time delays from HOS-based inverse filter criteria

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/12507

    Title: Blind identification of SIMO systems and simultaneous estimation of multiple time delays from HOS-based inverse filter criteria
    Authors: Chi CY
    Chen CY
    Chen CH
    Feng CC
    Peng CH
    教師: 祁忠勇
    Date: 2004
    Publisher: Institute of Electrical and Electronics Engineers Inc.
    Keywords: Blind system identification
    cumulant-based inverse
    filter criteria
    higher order statistics
    time delay estimation
    Abstract: © 2004 Institute of Electrical and Electronics Engineers-Higher order statistics-based inverse filter criteria (IFC) have been effectively used for blind equalization of single-input multiple-output (SIMO) systems. Recently, Chi and Chen reported a relationship between the unknown SIMO system and the optimum equalizer designed by the IFC for finite signal-to-noise ratio (SNR). In this paper, based on this relationship, an iterative fast Fourier transform (FFT)-based nonparametric blind system identification (BSI) algorithm and an FFT-based multiple-time-delay estimation (MTDE) algorithm are proposed with a given set of non-Gaussian measurements. The proposed BSI algorithm allows the unknown SIMO system to have common subchannel zeros, and its performance (estimation accuracy) is superior to that of the conventional IFC-based methods. The proposed MTDE algorithm can simultaneously estimate all the (P - 1) time delays (with respect to a reference sensor) with space diversity of sensors exploited; therefore, its performance (estimation accuracy) is robust to the nonuniform distribution of SNRs of P greater than or equal to 2 sensors (due to channel fading). Some simulation results are presented to support the efficacy of the proposed BSI algorithm and MTDE algorithm.
    Relation Link: http://www.ieee.org/portal/site
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/12507
    Appears in Collections:[電機工程學系] 期刊論文
    [通訊工程研究所] 期刊論文
    [電腦與通訊科技研發中心] 期刊論文

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