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

Mamiko Inamori, Anas M. Bostamam, Yukitoshi Sanada, Hideki Minami

    研究成果: Conference contribution

    9 被引用数 (Scopus)

    抄録

    In WLAN systems, direct conversion architecture has been implemented. Though this architecture reduces the cost and power consumption, it may suffer from DC offset, frequency offset, and IQ imbalance. This paper presents a frequency offset estimation scheme for OFDM direct conversion receivers. In this paper, a frequency offset estimation scheme in the presence of time-varying DC offset and IQ imbalance is proposed. The novelty of this scheme is in its usage of a differential filter to reduce DC offset. Evaluation of the presented estimation scheme was carried out on an OFDM communication system designed to the specifications of the IEEE 802.11a/g standard for WLANs. Numerical results through computer simulation show that the proposed frequency offset estimation scheme works well even with large DC offset and IQ imbalance.

    本文言語English
    ホスト出版物のタイトル18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
    DOI
    出版ステータスPublished - 2007 12 1
    イベント18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07 - Athens, Greece
    継続期間: 2007 9 32007 9 7

    出版物シリーズ

    名前IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

    Other

    Other18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
    CountryGreece
    CityAthens
    Period07/9/307/9/7

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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