Throughput analysis using eigenvalue based spectrum sensing under noise uncertainty

Ayse Kortun, Tharm Ratnarajah, Mathini Sellathurai, Ying-Chang Liang, Yonghong Zeng

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

9 Citations (Scopus)

Abstract

The essential tradeoff between sensing capability and achievable throughput of the secondary network is one of the active research topics for researchers working on cognitive radio. In this paper, noise uncertainty which has a great impact on sensing methods is taken into account in the maximization of throughput using eigenvalue based spectrum sensing schemes. This issue has not been tackled in the throughput associated studies before. First, the theoretical and empirical distributions of the decision statistics and the detection performances for eigenvalue based sensing techniques are studied in the presence of noise uncertainty. The computed detection probabilities of maximum-minimum eigenvalue (MME) detector and maximum eigenvalue detector (MED) are compared with the most widely used energy detector (ED). Then, in the light of the obtained results, the throughput of the secondary network is maximized in order to find out the sensing duration for each scheme using multiple receive antennas. It is shown that, under low signal to noise ratio (SNR) regime, the designed sensing slot duration achieves the best sensing throughput tradeoff.

Original languageEnglish
Title of host publication2012 8th International Wireless Communications and Mobile Computing Conference (IWCMC)
PublisherIEEE
Pages395-400
Number of pages6
ISBN (Electronic)9781457713798
ISBN (Print)9781457713781
DOIs
Publication statusPublished - 27 Sep 2012
Event8th IEEE International Wireless Communications and Mobile Computing Conference 2012 - Limassol, Cyprus
Duration: 27 Aug 201231 Aug 2012

Publication series

NameInternational Wireless Communications and Mobile Computing Conference
ISSN (Print)2376-6492
ISSN (Electronic)2376-6506

Conference

Conference8th IEEE International Wireless Communications and Mobile Computing Conference 2012
Abbreviated titleIWCMC 2012
CountryCyprus
CityLimassol
Period27/08/1231/08/12

Keywords

  • Cognitive radio
  • eigenvalue-based detection
  • sensing-throughput tradeoff
  • spectrum sensing

ASJC Scopus subject areas

  • Computer Networks and Communications

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