Compensation for HPA nonlinearity and I/Q imbalance in MIMO beamforming systems

Jian Qi, Sonia Aissa

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

9 Scopus citations


In this paper, we investigate the effects of high-power amplifier (HPA) nonlinearity and in-phase and quadrature-phase (I/Q) imbalance on the performance of multiple-input multiple-output (MIMO) transmit beamforming (TB) systems. Specifically, we propose a compensation method for HPA nonlinearity and I/Q imbalance together in MIMO TB systems. The performance of the MIMO TB system under study is evaluated in terms of the average symbol error probability (SEP) and system capacity, considering transmission over uncorrelated frequency-flat Rayleigh fading channels. Numerical results are provided and show the effects of several system parameters, such as the HPA parameters, image-leakage ratio, numbers of transmit and receive antennas, length of pilot symbols, and modulation order of phase-shift keying (PSK), on performance. © 2010 IEEE.
Original languageEnglish (US)
Title of host publication2010 IEEE 6th International Conference on Wireless and Mobile Computing, Networking and Communications
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Print)9781424477425
StatePublished - Oct 2010

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01


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