IQ imbalance compensation scheme in the presence of frequency offset and dynamic dc offset for a direct conversion receiver

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

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

    3 Citations (Scopus)

    Abstract

    A direct conversion architecture reduces the cost and power consumption of a receiver. However, a direct conversion receiver may suffer from direct current (DC) offset, frequency offset, and IQ imbalance. This paper presents an IQ imbalance estimation scheme for orthogonal frequency division multiplexing (OFDM) direct conversion receivers. The proposed IQ imbalance estimation scheme operates in the presence of dynamic DC offset and frequency offset. The proposed scheme calculates IQ imbalance from a simple equation. It employs the knowledge of the preamble symbols of the IEEE 802.11 a/g standards, while it does not require the impulse response of the channel. Numerical results through computer simulation show that the bit error rate (BER) performance for the proposed IQ imbalance estimation scheme has a degradation of about 4dB with a large DC offset, frequency offset, and IQ imbalance.

    Original languageEnglish
    Title of host publicationVTC Spring 2009 - IEEE 69th Vehicular Technology Conference
    DOIs
    Publication statusPublished - 2009 Oct 12
    EventVTC Spring 2009 - IEEE 69th Vehicular Technology Conference - Barcelona, Spain
    Duration: 2009 Apr 262009 Apr 29

    Publication series

    NameIEEE Vehicular Technology Conference
    ISSN (Print)1550-2252

    Other

    OtherVTC Spring 2009 - IEEE 69th Vehicular Technology Conference
    CountrySpain
    CityBarcelona
    Period09/4/2609/4/29

    ASJC Scopus subject areas

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

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  • Cite this

    Inamori, M., Bostamam, A. M., Sanada, Y., & Minami, H. (2009). IQ imbalance compensation scheme in the presence of frequency offset and dynamic dc offset for a direct conversion receiver. In VTC Spring 2009 - IEEE 69th Vehicular Technology Conference [5073621] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2009.5073621