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    National Tsing Hua University Institutional Repository > 研究中心 > 電腦與通訊科技研發中心 > 技術報告 >  Semiblind ML OSTBC-OFDM detection in block fading channels


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/13419


    Title: Semiblind ML OSTBC-OFDM detection in block fading channels
    Authors: Chang,Tsung-Hui
    Ma,Wing-Kin
    Chi,Chong-Yung
    Date: 2007
    Publisher: Institute of Electrical and Electronics Engineers Inc.
    Keywords: Fading channels
    Block codes
    Computer simulation
    Data recording
    Maximum likelihood
    Abstract: This paper presents a semiblind maximum-likelihood (ML) detector for the orthogonal space-time block coded orthogonal frequency division multiplexing (OSTBC-OFDM) system. Many existing blind/ semiblind OSTBC-OFDM receivers typically require that the channel is static over a multitude of OSTBC-OFDM blocks. The proposed method is specifically for detection over one OSTBC-OFDM block only, and hence is well suited to block fading channels. The presented identifiability analysis shows that the data can be uniquely identified in a probability one sense by using one pilot code only, in contrast to the pilot-based least-squares channel estimator which requires at least L pilot codes where L is the channel length. Simulation examples are then presented to show the efficacy of the proposed detector.
    Relation Link: http://www.ieee.org/portal/site
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/13419
    Appears in Collections:[電腦與通訊科技研發中心] 技術報告
    [通訊工程研究所] 會議論文
    [電腦與通訊科技研發中心] 會議論文

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