Capacity optimization for local and cooperative spectrum sensing in cognitive radio networks

A. Ayman El-Saleh, Mahamod Ismail, Mohd A M Ali, Ahmed N H Alnuaimy

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The dynamic spectrum allocation solutions such as cognitive radio networks have been proposed as a key technology to exploit the frequency segments that are spectrally underutilized. Cognitive radio users work as secondary users who need to constantly and rapidly sense the presence of primary users or licensees to utilize their frequency bands if they are inactive. Short sensing cycles should be run by the secondary users to achieve higher throughput rates as well as to provide low level of interference to the primary users by immediately vacating their channels once they have been detected. In this paper, the throughput-sensing time relationship in local and cooperative spectrum sensing has been investigated under two distinct scenarios, namely, constant primary user protection (CPUP) and constant secondary user spectrum usability (CSUSU) scenarios. The simulation results show that the design of sensing slot duration is very critical and depends on the number of cooperating users under CPUP scenario whereas under CSUSU, cooperating more users has no effect if the sensing time used exceeds 5% of the total frame duration.

Original languageEnglish
Pages (from-to)69-75
Number of pages7
JournalWorld Academy of Science, Engineering and Technology
Volume38
Publication statusPublished - Feb 2009

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Cognitive radio
Throughput
Frequency bands

Keywords

  • Capacity
  • Cognitive radio
  • Optimization
  • Spectrum sensing

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Capacity optimization for local and cooperative spectrum sensing in cognitive radio networks. / El-Saleh, A. Ayman; Ismail, Mahamod; Ali, Mohd A M; Alnuaimy, Ahmed N H.

In: World Academy of Science, Engineering and Technology, Vol. 38, 02.2009, p. 69-75.

Research output: Contribution to journalArticle

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