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    Correction of in phase-quadrature imbalance in the presence of multipath fading

    Access Status
    Fulltext not available
    Authors
    Haq, K.
    Chung, Kah-Seng
    Date
    2014
    Type
    Conference Paper
    
    Metadata
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    Citation
    Haq, K. and Chung, K. 2014. Correction of in phase-quadrature imbalance in the presence of multipath fading, in Proceedings of the Australian Communications Theory Workshop, Feb 3-5 2014, pp. 79-83. Sydney, NSW: IEEE.
    Source Title
    2014 Australian Communications Theory Workshop, AusCTW 2014
    DOI
    10.1109/AusCTW.2014.6766432
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/10327
    Collection
    • Curtin Research Publications
    Abstract

    The presence of in-phase/quadrature (I/Q) imbalance in a dual branch receiver gives rise to signal distortion. If the incoming signal is also corrupted by multipath fading, then the task of correcting or compensating for these two forms of distortion becomes technically very challenging. This paper proposes an adaptive approach which involves first correcting for the I/Q imbalance before the signal is compensated for the effect of multipath fading. Estimations of the I/Q imbalance and channel parameters are carried out with the aid of a common reference signal. Computer simulations have verified the effectiveness of the proposed scheme. In this case, the receiver suffers from frequency-flat I/Q imbalance of 20% gain and 5° phase deviations. Also, the incoming 64-QAM signal is assumed to have undergone a 6-path propagation.

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      This paper presents an adaptive combined correction and compensation (ACCC) scheme to mitigate the distortion caused by I/Q imbalance and multipath channel, for OFDM receivers. For the proposed scheme, the estimation of ...
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