Cooperative spectrum sensing: From fundamental limits to practical designs

Dongliang Duan, Liuqing Yang, Shuguang Cui

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The first and foremost function in cognitive radio is spectrum sensing. To overcome the performance bottleneck created by fading and shadowing effects of the wireless channel, cooperation among sensing users is proposed as a promising solution. However, most designs of cooperative sensing strategies are developed in a rather ad hoc manner due to the lack of the fundamental knowledge on the cooperation gain. Hence, in this chapter, the cooperation gain in the context of cooperative spectrum sensing is rigorously quantified via diversity and error exponent analyses. The fundamental limits of the diversity and error exponent are derived as functions of key system parameters. After that, a couple of case studies are presented to illustrate how the concepts of diversity and error exponent can guide practical designs of cooperative spectrum sensing.

Original languageEnglish (US)
Title of host publicationHandbook of Cognitive Radio
PublisherSpringer Singapore
Pages283-328
Number of pages46
Volume1-3
ISBN (Electronic)9789811013942
ISBN (Print)9789811013935
DOIs
StatePublished - Feb 21 2019
Externally publishedYes

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