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dc.contributor.authorPoitau, Gwenael
dc.contributor.authorKouki, Ammar B.
dc.date.accessioned2016-10-31T09:07:16Z
dc.date.available2016-10-31T09:07:16Z
dc.date.issued2012-01
dc.identifier.citationWireless Engineering and Technology, 2012, 3, 36-45en_US
dc.identifier.urihttp://dx.doi.org/10.4236/wet.2012.31006
dc.identifier.urihttp://hdl.handle.net/123456789/1114
dc.description.abstractIn this paper, a new amplification scheme for adaptive MIMO systems is proposed and tested. In this ‘hybrid amplification’ configuration, different amplifiers with different peak powers are used. In this way, each transmitter RF chain has a different DC-power consumption behavior. The adaptation algorithm, which chooses power and rate for each transmitter, uses these different amplifier behaviors to minimize the overall consumed energy. Several MIMO configurations designed for constant capacity applications have been simulated with different amplification schemes. Realistic amplifier models based on measured data are used. The difference between the amplifiers’ RF powers is set in order to keep optimal system performances. Then, it is shown that energy savings higher than 10% can be obtained with the hybrid amplification. The different tests are done for MQAM constellations in uncorrelated Rayleigh fading channels detected with a VBLAST ZF-SIC algorithm but can easily be extended to other correlated channels, detection algorithms or constellations.en_US
dc.language.isoenen_US
dc.publisherScientific Research Publishingen_US
dc.subjectMIMOen_US
dc.subjectVBLASTen_US
dc.subjectPower Amplifiersen_US
dc.subjectPower Efficiencyen_US
dc.subjectHybrid Amplificationen_US
dc.titleHybrid Amplification: An Efficient Scheme for Energy Saving in MIMO Systemsen_US
dc.typeArticleen_US


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