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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  >  A low-complexity constellation extension scheme for PAPR reduction of OFDM signals


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/67969


    Title: A low-complexity constellation extension scheme for PAPR reduction of OFDM signals
    Authors: Chin-Liang Wang;Yun-Chih Tsai;Sheng-Ju Ku
    教師: 王晉良
    Date: 2009
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: Proceedings of the 2009 IEEE Vehicular Technology Conference - Fall (VTC 2009-Fall), Anchorage, Alaska, Sept. 20-23, 2009, Pages 1-5
    Keywords: PAPR
    OFDM
    Abstract: Modulation constellation extension (CE) schemes provide good peak-to-average power ratio (PAPR) reduction performance for orthogonal frequency division multiplexing (OFDM) signals. However, they usually require a complicated algorithm to find the optimal signal for transmission. In this paper, we propose a low-complexity CE scheme to reduce the PAPR of OFDM signals, in which some low-complexity conversion matrices are used to generate multiple candidate signals for selection. Also, we develop a mechanism to limit the increase in the average transmitted power that results from the constellation extension to an acceptable level. As compared to the related work using the CE technique, the proposed CE scheme can achieve close PAPR reduction performance with much lower computational complexity and lower transmitted power.
    Relation Link: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/67969
    Appears in Collections:[電機工程學系] 會議論文

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