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

Hiroyuki Miyashita, Mamiko Inamori, Yukitoshi Sanada, Teruji Ide

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    7 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
    DOIs
    Publication statusPublished - 2012 Aug 20
    EventIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Yokohama, Japan
    Duration: 2012 May 62012 Jun 9

    Publication series

    NameIEEE Vehicular Technology Conference
    ISSN (Print)1550-2252

    Other

    OtherIEEE 75th Vehicular Technology Conference, VTC Spring 2012
    CountryJapan
    CityYokohama
    Period12/5/612/6/9

    ASJC Scopus subject areas

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

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  • Cite this

    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. In IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings [6239943] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2012.6239943