Impact of HPA nonlinearity on MIMO systems with quantized equal gain transmissionQi, J. and Aissa, S. (2009) Impact of HPA nonlinearity on MIMO systems with quantized equal gain transmission. In: 2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications. IEEE, pp. 2891-2895. ISBN 9781424451227 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/PIMRC.2009.5450073 Abstract/SummaryIn this paper, we investigate the performance of multiple-input multiple-output (MIMO) transmit beamforming (TB) systems in the presence of nonlinear high-power amplifiers (HPAs). Due to the suboptimality of maximal ratio transmission/maximal ratio combining (MRT/MRC) under HPA nonlinearity, quantized equal gain transmission (QEGT) is suggested as a feasible TB scheme. The effect of HPA nonlinearity on the performance of MIMO QEGT/MRC is evaluated in terms of the average symbol error probability (SEP) and system capacity, considering transmission over uncorrelated quasi-static frequency-flat Rayleigh fading channels. Numerical results are provided and show the effects of several system parameters, such as the parameters of nonlinear HPA, cardinality of the beamforming weight vector codebook, and modulation order of quadrature amplitude modulation (QAM), on performance.
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