Information theoretic analysis of cooperative relay in cognitive radio

Rozeha A. Rashid, Norazizah Mohd Aripin, Norsheila Fisal, Sh Kamilah Syed Yusof

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Motivated by the inefficient usage of the licensed spectrum across many frequency bands, cognitive radio (CR) was proposed to promote the spectrum utilization by opportunistically exploiting the existence of spectrum holes. Under this new paradigm, cognitive (unlicensed) user is allowed unobtrusive access to a channel exhibiting negligible primary (licensed) user activity. Cooperative communication is increasingly regarded as a way to address hidden terminal issues and to improve spatial diversity for the same spectrum frequency band. In this paper, we investigate two scenarios of cooperation: cooperative transmission of primary traffic by cognitive users (cognitive relaying) and cooperative transmission between cognitive nodes. The first scenario focuses on one cognitive transmitter which has the option to relay traffic of the primary assuming that the primary is oblivious to its presence and thus exclude the possibility of spectrum leasing. While the latter investigates a spectrum-rich node that is selected as the relay node to improve the performance between the source and the destination. To demonstrate the feasibility and performance of cooperative relay for cognitive radio, numerical results based on information theory approach are provided in order to discuss the advantages and limits of the two strategies.

Original languageEnglish
Title of host publicationProceedings - 2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009
DOIs
Publication statusPublished - 2009
Event2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009 - New Delhi, India
Duration: 11 Dec 200912 Dec 2009

Other

Other2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009
CountryIndia
CityNew Delhi
Period11/12/0912/12/09

Fingerprint

Information analysis
Cognitive radio
Frequency bands
radio
Cooperative communication
Telecommunication repeaters
Information theory
Telecommunication traffic
traffic
scenario
Transmitters
leasing
information theory
performance
utilization
paradigm
communication

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Communication

Cite this

Rashid, R. A., Mohd Aripin, N., Fisal, N., & Yusof, S. K. S. (2009). Information theoretic analysis of cooperative relay in cognitive radio. In Proceedings - 2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009 [5749404] https://doi.org/10.1109/UKIWCWS.2009.5749404
Rashid, Rozeha A. ; Mohd Aripin, Norazizah ; Fisal, Norsheila ; Yusof, Sh Kamilah Syed. / Information theoretic analysis of cooperative relay in cognitive radio. Proceedings - 2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009. 2009.
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Rashid, RA, Mohd Aripin, N, Fisal, N & Yusof, SKS 2009, Information theoretic analysis of cooperative relay in cognitive radio. in Proceedings - 2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009., 5749404, 2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009, New Delhi, India, 11/12/09. https://doi.org/10.1109/UKIWCWS.2009.5749404

Information theoretic analysis of cooperative relay in cognitive radio. / Rashid, Rozeha A.; Mohd Aripin, Norazizah; Fisal, Norsheila; Yusof, Sh Kamilah Syed.

Proceedings - 2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009. 2009. 5749404.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Rashid RA, Mohd Aripin N, Fisal N, Yusof SKS. Information theoretic analysis of cooperative relay in cognitive radio. In Proceedings - 2009 1st UK-India International Workshop on Cognitive Wireless Systems, UKIWCWS 2009. 2009. 5749404 https://doi.org/10.1109/UKIWCWS.2009.5749404