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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  >  An improved peak-to-average power ratio estimation scheme for OFDM systems

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/67936

    Title: An improved peak-to-average power ratio estimation scheme for OFDM systems
    Authors: Chin-Liang Wang;Sheng-Ju Ku;Chun-Ju Yang
    教師: 王晉良
    Date: 2007
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th, Dublin Ireland, 22-25 April 2007, Pages 2827 - 2831
    Keywords: OFDM
    power ratio
    estimation scheme
    Abstract: To approximate the exact peaks of continuous-time orthogonal frequency division multiplexing (OFDM) signals, four times oversampling is usually employed for discrete-time OFDM signals in various peak-to-average power ratio (PAPR) reduction schemes. Such an oversampling process would significantly increase the computational complexity, especially for a selected mapping scheme where a number of IFFT blocks may be used. In this paper, we present a low-complexity PAPR estimation scheme with two times oversampling based on "peak-search-and-partial-interpolation" (PSPI). As compared to the PAPR estimation method with four times oversampling, the proposed one achieves similar performance with only about half computational complexity. It is also shown that, with no significant increase in the computational complexity, the proposed PSPI scheme with two times oversampling has better PAPR estimation performance than the previous PSPI work without oversampling.
    Relation Link: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/67936
    Appears in Collections:[電機工程學系] 會議論文

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