Wideband spectrum sensing order for cognitive radios with sensing errors and channel SNR probing uncertainty

Handle URI:
http://hdl.handle.net/10754/562709
Title:
Wideband spectrum sensing order for cognitive radios with sensing errors and channel SNR probing uncertainty
Authors:
Hamza, Doha R.; Aïssa, Sonia
Abstract:
A secondary user (SU) seeks to transmit by sequentially sensing statistically independent primary user (PU) channels. If a channel is sensed free, it is probed to estimate the signal-to-noise ratio between the SU transmitter-receiver pair over the channel. We jointly optimize the channel sensing time, the sensing decision threshold, the channel probing time, together with the channel sensing order under imperfect synchronization between the PU and the SU. The sensing and probing times and the decision threshold are assumed to be the same for all channels. We maximize a utility function related to the SU throughput under the constraint that the collision probability with the PU is kept below a certain value and taking sensing errors into account. We illustrate the optimal policy and the variation of SU throughput with various system parameters. © 2012 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program
Publisher:
Institute of Electrical and Electronics Engineers
Journal:
IEEE Wireless Communications Letters
Issue Date:
Apr-2013
DOI:
10.1109/WCL.2012.121812.120809
Type:
Article
ISSN:
21622337
Appears in Collections:
Articles; Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorHamza, Doha R.en
dc.contributor.authorAïssa, Soniaen
dc.date.accessioned2015-08-03T11:02:30Zen
dc.date.available2015-08-03T11:02:30Zen
dc.date.issued2013-04en
dc.identifier.issn21622337en
dc.identifier.doi10.1109/WCL.2012.121812.120809en
dc.identifier.urihttp://hdl.handle.net/10754/562709en
dc.description.abstractA secondary user (SU) seeks to transmit by sequentially sensing statistically independent primary user (PU) channels. If a channel is sensed free, it is probed to estimate the signal-to-noise ratio between the SU transmitter-receiver pair over the channel. We jointly optimize the channel sensing time, the sensing decision threshold, the channel probing time, together with the channel sensing order under imperfect synchronization between the PU and the SU. The sensing and probing times and the decision threshold are assumed to be the same for all channels. We maximize a utility function related to the SU throughput under the constraint that the collision probability with the PU is kept below a certain value and taking sensing errors into account. We illustrate the optimal policy and the variation of SU throughput with various system parameters. © 2012 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineersen
dc.subjectchannel probingen
dc.subjectCognitive radioen
dc.subjectwideband sensingen
dc.titleWideband spectrum sensing order for cognitive radios with sensing errors and channel SNR probing uncertaintyen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.identifier.journalIEEE Wireless Communications Lettersen
dc.contributor.institutionNational Institute of Scientific Research-Energy, Materials, and Telecommunications (INRS-EMT), University of Quebec, Montreal, QC, Canadaen
kaust.authorHamza, Doha R.en
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