Peak-to-average power ratio reduction of SFBC MIMO-OFDM signals using unused tones

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dc.contributor.authorBraz, Isabela-
dc.contributor.authorGuan, Lei-
dc.contributor.authorZhu, Anding-
dc.contributor.authorBrazil, Thomas J.- IEEEen_US
dc.descriptionThe 2010 IEEE International Microwave Workshop Series on RF Front-ends for Software Defined and Cognitive Radio Solutions (IMWS), Aveiro, Portugal, 22-23 February 2010en_US
dc.description.abstractMultiple input multiple output techniques combined with orthogonal frequency division multiplexing (MIMO-OFDM) provide a promising approach for wireless systems. However, a serious drawback of the OFDM system is the high peak-toaverage power ratio (PAPR), which may severely affect the power efficiency of RF power amplifiers. In this paper, we propose a simple method to reduce the PAPR of MIMO-OFDM signals based on the use of unused subcarriers. Instead of processing the signals at each transmitter separately, a peak cancelling signal is generated at one antenna and is then applied to all the others with only simple modifications. Simulation has shown that a minimum 2 dB reduction in PAPR can be achieved for all transmit signals using this approach. As the signal processing is nearly all done at a single transmitter, repetition of the operations at each transmitter is avoided, and therefore the overall cost of the system can be significantly reduced.en_US
dc.relation.ispartof2010 IEEE International Microwave Workshop Series on "RF Front-ends for Software Defined and Cognitive Radio Solutions", IMWS 2010 - Proceedingsen_US
dc.rights© 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en_US
dc.subjectMultiple Input Multiple Output (MIMO)en_US
dc.subjectOrthogonal Frequency Division Multiplexing (OFDM)en_US
dc.subjectPeak to Average Power Ratio (PAPR)en_US
dc.subjectSpace Frequency Block Coding (SFBC)en_US
dc.titlePeak-to-average power ratio reduction of SFBC MIMO-OFDM signals using unused tonesen_US
dc.typeConference Publicationen_US
dc.statusPeer revieweden_US
dc.neeo.contributorBrazil|Thomas J.|aut|-
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