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Impact of HPA nonlinearity on MIMO systems with quantized equal gain transmission

Qi, 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

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To link to this item DOI: 10.1109/PIMRC.2009.5450073

Abstract/Summary

In 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.

Item Type:Book or Report Section
Refereed:Yes
Divisions:Faculty of Science
ID Code:33450
Uncontrolled Keywords:HPA nonlinearity; MIMO transmit beamforming system; MRC; MRT; QAM; beamforming weight vector codebook; fading channel; maximal ratio combining; maximal ratio transmission; multiple-input multiple-output system; nonlinear high-power amplifier; quadrature amplitude modulation; quantized equal gain transmission; quasistatic frequency-flat Rayleigh channel; symbol error probability; amplitude modulation; array signal processing; capacity planning; diversity reception; error probability; fading; frequency; high power amplifiers; MIMO; quadrature amplitude modulation
Publisher:IEEE

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