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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 會議論文  >  Joint channel and doppler spread estimation over time-varying flat-fading channels


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83657


    Title: Joint channel and doppler spread estimation over time-varying flat-fading channels
    Authors: Kai-Jie Yang;Chin-Liang Wang;Yuh-Ren Tsai
    教師: 王晉良
    Date: 2012
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: Proceedings of the 2012 IEEE Vehicular Technology Conference - Spring (VTC 2012-Spring), Yokohama, Japan, MAY 06-09, 2012, Pages 1 - 5
    Keywords: time-varying flat-fading channels
    Abstract: In time-varying flat-fading environments, time domain channel correlations are required for accurate channel estimation and interpolation. However, the correlation property, which depends on the Doppler spread, is hard to be extracted from corrupted channel responses within a short channel estimation interval. In this work, based on an approximate channel model via the Taylor expansion, we propose a joint channel and Doppler spread estimation scheme over time-varying flat-fading channels. It employs the expectation-maximization (EM) algorithm to iteratively attain the maximum-likelihood (ML) channel and Doppler spread estimates. Simulation results show that the proposed scheme achieves accurate performance of both channel estimation and Doppler spread estimation within a short estimation interval.
    Relation Link: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83657
    Appears in Collections:[電機工程學系] 會議論文
    [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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