Compressed sensing based joint-compensation of power amplifier's distortions in OFDMA cognitive radio systems

Handle URI:
http://hdl.handle.net/10754/563133
Title:
Compressed sensing based joint-compensation of power amplifier's distortions in OFDMA cognitive radio systems
Authors:
Ali, Anum Z.; Hammi, Oualid; Al-Naffouri, Tareq Y. ( 0000-0003-2843-5084 )
Abstract:
Linearization of user equipment power amplifiers driven by orthogonal frequency division multiplexing signals is addressed in this paper. Particular attention is paid to the power efficient operation of an orthogonal frequency division multiple access cognitive radio system and realization of such a system using compressed sensing. Specifically, precompensated overdriven amplifiers are employed at the mobile terminal. Over-driven amplifiers result in in-band distortions and out of band interference. Out of band interference mostly occupies the spectrum of inactive users, whereas the in-band distortions are mitigated using compressed sensing at the receiver. It is also shown that the performance of the proposed scheme can be further enhanced using multiple measurements of the distortion signal in single-input multi-output systems. Numerical results verify the ability of the proposed setup to improve error vector magnitude, bit error rate, outage capacity and mean squared error. © 2011 IEEE.
KAUST Department:
Electrical Engineering Program
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Journal on Emerging and Selected Topics in Circuits and Systems
Issue Date:
Dec-2013
DOI:
10.1109/JETCAS.2013.2284614
Type:
Article
ISSN:
21563357
Sponsors:
This work was supported by King Abdulaziz City for Science and Technology through the Science and Technology Unit at King Fahd University of Petroleum and Minerals, through Project 11-ELE1651-04, as part of the National Science, Technology and Innovation Plan.
Appears in Collections:
Articles; Electrical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorAli, Anum Z.en
dc.contributor.authorHammi, Oualiden
dc.contributor.authorAl-Naffouri, Tareq Y.en
dc.date.accessioned2015-08-03T11:36:33Zen
dc.date.available2015-08-03T11:36:33Zen
dc.date.issued2013-12en
dc.identifier.issn21563357en
dc.identifier.doi10.1109/JETCAS.2013.2284614en
dc.identifier.urihttp://hdl.handle.net/10754/563133en
dc.description.abstractLinearization of user equipment power amplifiers driven by orthogonal frequency division multiplexing signals is addressed in this paper. Particular attention is paid to the power efficient operation of an orthogonal frequency division multiple access cognitive radio system and realization of such a system using compressed sensing. Specifically, precompensated overdriven amplifiers are employed at the mobile terminal. Over-driven amplifiers result in in-band distortions and out of band interference. Out of band interference mostly occupies the spectrum of inactive users, whereas the in-band distortions are mitigated using compressed sensing at the receiver. It is also shown that the performance of the proposed scheme can be further enhanced using multiple measurements of the distortion signal in single-input multi-output systems. Numerical results verify the ability of the proposed setup to improve error vector magnitude, bit error rate, outage capacity and mean squared error. © 2011 IEEE.en
dc.description.sponsorshipThis work was supported by King Abdulaziz City for Science and Technology through the Science and Technology Unit at King Fahd University of Petroleum and Minerals, through Project 11-ELE1651-04, as part of the National Science, Technology and Innovation Plan.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectCognitive radio (CR)en
dc.subjectcompressed sensingen
dc.subjectnonlinear distortionsen
dc.subjectorthogonal frequency division multiple access (OFDMA)en
dc.subjectpower amplifieren
dc.subjectpower efficiencyen
dc.subjectprecompensationen
dc.subjectpredistortionen
dc.titleCompressed sensing based joint-compensation of power amplifier's distortions in OFDMA cognitive radio systemsen
dc.typeArticleen
dc.contributor.departmentElectrical Engineering Programen
dc.identifier.journalIEEE Journal on Emerging and Selected Topics in Circuits and Systemsen
dc.contributor.institutionDepartment of Electrical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabiaen
kaust.authorAl-Naffouri, Tareq Y.en
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