On the power amplifier nonlinearity in MIMO transmit beamforming systems

Handle URI:
http://hdl.handle.net/10754/562114
Title:
On the power amplifier nonlinearity in MIMO transmit beamforming systems
Authors:
Qi, Jian; Aissa, Sonia
Abstract:
In this paper, single-carrier multiple-input multiple-output (MIMO) transmit beamforming (TB) systems in the presence of high-power amplifier (HPA) nonlinearity are investigated. Specifically, due to the suboptimality of the conventional maximal ratio transmission/maximal ratio combining (MRT/MRC) under HPA nonlinearity, we propose the optimal TB scheme with the optimal beamforming weight vector and combining vector, for MIMO systems with nonlinear HPAs. Moreover, an alternative suboptimal but much simpler TB scheme, namely, quantized equal gain transmission (QEGT), is proposed. The latter profits from the property that the elements of the beamforming weight vector have the same constant modulus. The performance of the proposed optimal TB scheme and QEGT/MRC technique in the presence of the HPA nonlinearity is evaluated in terms of the average symbol error probability and mutual information with the Gaussian input, considering the transmission over uncorrelated quasi-static frequency-flat Rayleigh fading channels. Numerical results are provided and show the effects on the performance of several system parameters, namely, the HPA parameters, numbers of antennas, quadrature amplitude modulation modulation order, number of pilot symbols, and cardinality of the beamforming weight vector codebook for QEGT. © 2012 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Physical Sciences and Engineering (PSE) Division
Publisher:
Institute of Electrical and Electronics Engineers
Journal:
IEEE Transactions on Communications
Issue Date:
Mar-2012
DOI:
10.1109/TCOMM.2012.021712.110006
Type:
Article
ISSN:
00906778
Sponsors:
This work was supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada and the Quebec Government Fonds Quebecois de la Recherche sur la Nature et les Technologies (FQRNT). Part of this work was presented at IEEE PIMRC'09 and IEEE PIMRC'10.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorQi, Jianen
dc.contributor.authorAissa, Soniaen
dc.date.accessioned2015-08-03T09:45:08Zen
dc.date.available2015-08-03T09:45:08Zen
dc.date.issued2012-03en
dc.identifier.issn00906778en
dc.identifier.doi10.1109/TCOMM.2012.021712.110006en
dc.identifier.urihttp://hdl.handle.net/10754/562114en
dc.description.abstractIn this paper, single-carrier multiple-input multiple-output (MIMO) transmit beamforming (TB) systems in the presence of high-power amplifier (HPA) nonlinearity are investigated. Specifically, due to the suboptimality of the conventional maximal ratio transmission/maximal ratio combining (MRT/MRC) under HPA nonlinearity, we propose the optimal TB scheme with the optimal beamforming weight vector and combining vector, for MIMO systems with nonlinear HPAs. Moreover, an alternative suboptimal but much simpler TB scheme, namely, quantized equal gain transmission (QEGT), is proposed. The latter profits from the property that the elements of the beamforming weight vector have the same constant modulus. The performance of the proposed optimal TB scheme and QEGT/MRC technique in the presence of the HPA nonlinearity is evaluated in terms of the average symbol error probability and mutual information with the Gaussian input, considering the transmission over uncorrelated quasi-static frequency-flat Rayleigh fading channels. Numerical results are provided and show the effects on the performance of several system parameters, namely, the HPA parameters, numbers of antennas, quadrature amplitude modulation modulation order, number of pilot symbols, and cardinality of the beamforming weight vector codebook for QEGT. © 2012 IEEE.en
dc.description.sponsorshipThis work was supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada and the Quebec Government Fonds Quebecois de la Recherche sur la Nature et les Technologies (FQRNT). Part of this work was presented at IEEE PIMRC'09 and IEEE PIMRC'10.en
dc.publisherInstitute of Electrical and Electronics Engineersen
dc.subjecthigh-power amplifier (HPA)en
dc.subjectMultiple-input multiple-output (MIMO)en
dc.subjectmutual informationen
dc.subjectnonlinearityen
dc.subjectoptimal transmit-beamforming (TB)en
dc.subjectquantized equal gain transmission (QEGT)en
dc.titleOn the power amplifier nonlinearity in MIMO transmit beamforming systemsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalIEEE Transactions on Communicationsen
dc.contributor.institutionINRS, University of Quebec, Montreal, QC, Canadaen
kaust.authorQi, Jianen
kaust.authorAissa, Soniaen
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