Coupled Detection and Estimation Based Censored Spectrum Sharing in Cognitive Radio Networks

Jyoti Mansukhani, Priyadip Ray, Pramod Kumar Varshney

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

A novel spectrum sharing strategy based on coupled detection and estimation is proposed for cognitive radio networks. The proposed approach is able to tradeoff throughput for reduced interference at the primary user (PU) via censored transmissions. We derive the optimum censoring strategy that maximizes the throughput of the cognitive radio system under an average interference power constraint at the PU. We then extend the proposed framework to jointly optimize the censoring and the power allocation strategies of the secondary user (SU) that maximize the throughput of the secondary network under average transmit power and average interference power constraints. Finally, we provide extensive simulation results to demonstrate the enhanced performance of the proposed censoring based spectrum sharing approach.

Original languageEnglish (US)
Article number7422836
Pages (from-to)4206-4217
Number of pages12
JournalIEEE Transactions on Wireless Communications
Volume15
Issue number6
DOIs
StatePublished - Jun 1 2016

Keywords

  • Beamforming
  • cognitive radio
  • coupled detection and estimation
  • spectrum sensing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

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