Frequency offset estimation scheme in the presence of time-varying DC offset for OFDM direct conversion receivers

Mamiko Inamori, Anas Muhamad Bostamam, Yukitoshi Sanada, Hideki Minami

    研究成果: Article査読

    15 被引用数 (Scopus)

    抄録

    This paper presents a frequency offset estimation scheme for Orthogonal Frequency Division Multiplex (OFDM) direct conversion receivers. The key idea is to use a differential filter for reduction of DC offset. Frequency offset is estimated in the presence of time-varying DC offset. In order to overcome the varying DC levels under automatic gain control (AGC) circuits, a threshold level is set for the output of the differential filter. The proposed compensation scheme offers superior frequency offset estimation when compared with a conventional scheme with a high pass filter.

    本文言語English
    ページ(範囲)2884-2890
    ページ数7
    ジャーナルIEICE Transactions on Communications
    E90-B
    10
    DOI
    出版ステータスPublished - 2007 1月 1

    ASJC Scopus subject areas

    • ソフトウェア
    • コンピュータ ネットワークおよび通信
    • 電子工学および電気工学

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