National Tsing Hua University Institutional Repository:Adaptive channel estimation using the GOBA algorithm for turbo codes in Rayleigh flat-fading channels
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    题名: Adaptive channel estimation using the GOBA algorithm for turbo codes in Rayleigh flat-fading channels
    作者: Chin-Liang Wang
    Jah-Ming Hsu
    Ting-Yang Chang
    教師: 王晉良
    日期: 2000
    出版者: Institute of Electrical and Electronics Engineers Inc.
    關聯: Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on Volume 4, 28-31 May 2000 Page(s):45 - 48 vol.4
    关键词: adaptive estimation
    iterative methods
    Rayleigh channels
    tracking
    turbo codes
    摘要: Performance of turbo codes in fading channels can be improved when the channel fading amplitudes are available at the turbo decoders, conventionally, channel estimation and turbo-decoding are treated as two independent tasks. In this paper, we propose an iterative structure for fading amplitude estimation where turbo-decoder decisions are directed to an adaptive channel estimator using the general optimum block adaptive (GOBA) algorithm. The performance of a turbo-coding system with the proposed channel estimation structure is also investigated through computer simulations for correlated Rayleigh flat-fading channels. This decision-directed approach for channel re-estimation combined with the excellent tracking capability of the GOBA algorithm significantly improves the turbo-coding system performance. Computer simulation results show that its bit error rate performance is close to that of a system with perfect knowledge of fading amplitudes especially for fast-fading channels
    相関连結: http://ieeexplore.ieee.org/Xplore/dynhome.jsp
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/13202
    显示于类别:[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

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