On the effect of I/Q imbalance on MIMO transmit-receive diversity systemsQi, J. and Aissa, S. (2009) On the effect of I/Q imbalance on MIMO transmit-receive diversity systems. In: 2009 IEEE Wireless Communications and Networking Conference. IEEE, pp. 1-5. ISBN 9781424429479 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1109/WCNC.2009.4917854 Abstract/SummaryIn practice, all I/Q signal processing receivers face the problem of I/Q imbalance. In this paper, we investigate the effect of I/Q imbalance on the performance of MIMO maximal ratio combining (MRC) systems that perform the combining at the radio frequency (RF) level, thereby requiring only one RF chain. Based on a system modeling that takes the I/Q imbalance into account, we evaluate the performance in terms of average symbol error probability (SEP), outage probability and system capacity, which are derived considering transmission over uncorrelated Rayleigh fading channels. Numerical results are provided to illustrate the effects of system parameters, such as the image- leakage ratio, numbers of transmit and receive antennas, and modulation order of quadrature amplitude modulation (QAM), on the system performance.
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