Comparative study of spectrum sensing techniques in cognitive radio networks

Fazlullah Khan, Kenji Nakagawa

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

42 Citations (Scopus)

Abstract

Traditional wireless networks including wireless sensor networks working in an unlicensed spectrum band are suffered from uncontrolled interference, as this unlicensed spectrum band gets crowded day by day. This problem is not because of spectrum band deficiency, rather it is because of the misuse/inefficient usage of the spectrum bands i.e., fixed spectrum assignment policy. Cognitive Radio (CR) is a promising technology to solve this challenging spectrum allocation problem. The CR opportunistically access vacant spectrum bands in a licensed spectrum. When the current band/channel becomes unavailable, the device can switch to another available channel. However, for the realization of the cognitive radio networks, spectrum sensing is the ground work and also regulatory bodies need to adopt flexible and non-fixed policies & techniques. In this paper, we analyze different spectrum sensing techniques to detect the presence of the Primary User (PU). The techniques covered in this paper are fuzzy logic cooperative spectrum sensing, asynchronous cooperative spectrum sensing, cooperative spectrum sensing based on network coding, cooperative spectrum sensing with relay diversity, and distributed cooperative spectrum sensing based network coding.

Original languageEnglish
Title of host publication2013 World Congress on Computer and Information Technology, WCCIT 2013
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 World Congress on Computer and Information Technology, WCCIT 2013 - Sousse, Tunisia
Duration: 22 Jun 201324 Jun 2013

Publication series

Name2013 World Congress on Computer and Information Technology, WCCIT 2013

Conference

Conference2013 World Congress on Computer and Information Technology, WCCIT 2013
Country/TerritoryTunisia
CitySousse
Period22/06/1324/06/13

Keywords

  • Cognitive Radio Networks
  • Cooperative Spectrum Sensing
  • Distributed Sensing
  • Fuzzy Logic based Spectrum Sensing
  • Relay based Spectrum Sensing

ASJC Scopus subject areas

  • Computer Networks and Communications

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