Cross-layer design for spectrum sensing with selection diversity for cognitive radio systems

Chang Kyung Sung*, Iain B. Collings

*Corresponding author for this work

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

Abstract

In this paper, we propose a new sensor node selection technique to improve spectrum sensing capability by jointly designing with a medium access layer protocol. As cognitive radio (CR) systems have no prior knowledge about the operation of the licensed network, cooperation between physical layer and medium access layer (MAC) is employed in this paper to keep track of operations of sensing nodes. To improve sensing performance, additional sensing nodes are deployed. The status of spectrum sensing at each user and each subband are maintained by finite state machine at the MAC layer. According to the state at CR nodes, the proposed scheme selects the dedicated sensing node for the channel with the best sensing performance. Numerical results show that the performance of the proposed scheme is almost the same as the cooperative spectrum sensing while our proposed scheme requires only one sensing node for the spectrum sensing.

Original languageEnglish
Title of host publicationAusCTW'12
Subtitle of host publication2012 Australian Communications Theory Workshop (AusCTW)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages130-134
Number of pages5
ISBN (Print)9781457719622
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 Australian Communications Theory Workshop, AusCTW'12 - Wellington, New Zealand
Duration: 30 Jan 20122 Feb 2012

Other

Other2012 Australian Communications Theory Workshop, AusCTW'12
CountryNew Zealand
CityWellington
Period30/01/122/02/12

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