Cooperative spectrum sensing optimization in cognitive radio networks

Wei Zhang, Ranjan K. Mallik, Khaled Letaief

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

330 Citations (Scopus)

Abstract

Cognitive radio is being recognized as an intelligent technology due to its ability to rapidly and autonomously adapt operating parameters to changing environments and conditions. In order to reliably and swiftly detect spectrum holes in cognitive radios, spectrum sensing must be used. In this paper, we consider cooperative spectrum sensing in order to optimize the sensing performance. We focus on energy detection for spectrum sensing and find that the optimal fusion rule is the half-voting rule. Next, the optimal detection threshold of energy detection is determined numerically. Finally, we propose a fast spectrum sensing algorithm for a large network which requires fewer than the total number of cognitive radios to perform cooperative spectrum sensing while satisfying a given error bound.

Original languageEnglish
Title of host publicationICC 2008 - IEEE International Conference on Communications, Proceedings
Pages3411-3415
Number of pages5
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
Duration: 19 May 200823 May 2008

Other

OtherIEEE International Conference on Communications, ICC 2008
CountryChina
CityBeijing
Period19/5/0823/5/08

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Zhang, W., Mallik, R. K., & Letaief, K. (2008). Cooperative spectrum sensing optimization in cognitive radio networks. In ICC 2008 - IEEE International Conference on Communications, Proceedings (pp. 3411-3415). [4533677] https://doi.org/10.1109/ICC.2008.641