IQ imbalance estimation scheme with intercarrier interference self-cancellation pilot symbols in OFDM direct conversion receivers

Hiroyuki Miyashita, Mamiko Inamori, Yukitoshi Sanada, Teruji Ide

    研究成果: Conference contribution

    7 引用 (Scopus)

    抜粋

    Direct conversion receivers in orthogonal frequency division multiplexing (OFDM) systems suffer from direct current (DC) offset, frequency offset, and IQ imbalance. We have proposed an IQ imbalance estimation scheme in the presence of DC offset and frequency offset, which uses pilot subcarriers in the frequency domain. In this scheme, the DC offset is eliminated by a differential filter. However, the accuracy of IQ imbalance estimation is deteriorated due to the intercarrier interference (ICI) components caused by frequency offset. To overcome this problem, a new IQ imbalance estimation scheme with intercarrier interference self-cancellation pilot symbols in the frequency domain has been proposed in this paper. Numerical results obtained through computer simulation show that estimation accuracy and bit error rate (BER) performance are improved.

    元の言語English
    ホスト出版物のタイトルIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
    DOI
    出版物ステータスPublished - 2012 8 20
    イベントIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Yokohama, Japan
    継続期間: 2012 5 62012 6 9

    出版物シリーズ

    名前IEEE Vehicular Technology Conference
    ISSN(印刷物)1550-2252

    Other

    OtherIEEE 75th Vehicular Technology Conference, VTC Spring 2012
    Japan
    Yokohama
    期間12/5/612/6/9

    ASJC Scopus subject areas

    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Applied Mathematics

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  • これを引用

    Miyashita, H., Inamori, M., Sanada, Y., & Ide, T. (2012). IQ imbalance estimation scheme with intercarrier interference self-cancellation pilot symbols in OFDM direct conversion receivers. : IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings [6239943] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2012.6239943