Delayed correlation based signal detection scheme with filter bank for OFDM signal

Hiroyuki Odani, Yukitoshi Sanada

    研究成果: Conference contribution

    抄録

    Delayed correlation has been used as a signal detection scheme for an orthogonal frequency devision multiplexing symbol with a cyclic prefix in spectrum sensing. Because of a frequency offset, the outputs of the delayed correlation do not lay only on a real axis of a complex plane. Therefore, the absolute value of the outputs of the delayed correlation is employed. Furthermore, with the use of a filter bank, the number of the outputs of the delayed correlators increases and the averaging over the outputs decreases noise variance. This paper proposes a new delayed correlation scheme using the filter bank and taking the absolute value of the outputs of delayed correlation. The proposed scheme improves the probability of detection as the number of the branches of the delayed correlators increases. In the case of 6 branches the proposed scheme reduces the required sample energy by 1dB for the probability of detection of 0.9.

    本文言語English
    ホスト出版物のタイトル2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ1-6
    ページ数6
    ISBN(印刷版)9781479961207
    DOI
    出版ステータスPublished - 2014 1 27
    イベント2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014 - Kuching, Sarawak, Malaysia
    継続期間: 2014 12 12014 12 4

    Other

    Other2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
    国/地域Malaysia
    CityKuching, Sarawak
    Period14/12/114/12/4

    ASJC Scopus subject areas

    • 人工知能
    • コンピュータ ネットワークおよび通信
    • 信号処理

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