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Energy-efficient transmission with imperfect spectrum sensing in cognitive radio
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0002-5407-0835
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2016 (English)In: 2016 IEEE International Conference on Communications, ICC 2016, Institute of Electrical and Electronics Engineers (IEEE), 2016, 162-167 p., 7510686Conference paper, Published paper (Refereed)
Abstract [en]

We investigate the energy efficiency (EE) in cognitive radio networks, where cognitive users are allowed to access the licensed frequency band opportunistically, provided that the licensed band is vacant. In particular, we study the impact of imperfect spectrum sensing and formulate the EE maximization as a joint optimization problem of the spectrum sensing duration and the transmit power of the cognitive transmitter. Specially, we consider the constraints of both the collision probability between the primary and cognitive transmission and the outage probability of the cognitive transmission. Since the joint optimization problem of the sensing duration and the transmit power is hard to be solved directly, we decompose it into two sub-problems with the spectrum sensing duration and the transmit power as variables, respectively. Based on the analytical solvers of the two sub-problems, we propose an iterative-based algorithm to solve the joint optimization problem. Finally, numerical results are provided to validate the analysis and performance of our proposed algorithms.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2016. 162-167 p., 7510686
Series
IEEE International Conference on Communications, ISSN 1550-3607
Keyword [en]
Cognitive radio, Cognitive transmission, Energy-efficiency, Imperfect sensing, Energy efficiency, Frequency bands, Iterative methods, Optimization, Radio transmission, Cognitive radio network, Cognitive transmissions, Collision probability, Energy efficient transmission, Imperfect spectrum sensing, Licensed frequency, Outage probability
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-197157DOI: 10.1109/ICC.2016.7510686ISI: 000390993200028Scopus ID: 2-s2.0-84981344625ISBN: 978-1-4799-6664-6 (print)OAI: oai:DiVA.org:kth-197157DiVA: diva2:1055980
Conference
2016 IEEE International Conference on Communications, ICC 2016, Kuala Lumpur, Malaysia, 22 May 2016 through 27 May 2016
Note

QC 20170201

Available from: 2016-12-13 Created: 2016-11-30 Last updated: 2017-02-01Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf