University of Hertfordshire

Relay-Based Cooperative Spectrum Sensing with Improved Energy Detection In Cognitive Radio

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

View graph of relations
Original languageEnglish
Title of host publication2015 10th International Conference on Broadband and Wireless Computing, Communication and Applications (BWCCA)
PublisherIEEE
Pages227-231
Number of pages5
ISBN (Electronic)978-1-4673-8315-8
DOIs
Publication statusPublished - 3 Mar 2016
EventInternational Conference on Broadband and Wireless Computing, Communication and Applications - Pedagogical University of Cracow, Krakow, Poland
Duration: 4 Nov 20156 Nov 2015
Conference number: 10th
http://www.lsi.upc.edu/~net4all/BWCCA-2015/index.html

Conference

ConferenceInternational Conference on Broadband and Wireless Computing, Communication and Applications
Abbreviated titleBWCCA 2015
CountryPoland
CityKrakow
Period4/11/156/11/15
Internet address

Abstract

Cognitive radio has become an effective technology to solve the underutilisation problem of the spectrum. In recent times, spectrum sensing has been intensively studied as a key technology in realising the cognitive radio. In this paper, we consider an amplify-and-forward relay-based cooperative spectrum sensing using a double threshold energy detector. Each secondary cognitive user takes a local decision on spectrum occupancy based on two energy detection thresholds. If it detects the value out of both thresholds, it makes a decision first, amplifies and forwards the local result to the fusion center. If the detected value falls between the both thresholds, it amplifies and forwards this detected value to the fusion center. Finally, energy fusion and decision fusion are conducted at the fusion center to determine the primary user status. Cooperative probability of detection, probability of missed detection and probability of false alarm are derived theoretically with and without direct communication between the primary user and fusion centre. Simulation results show that the proposed method achieves an improvement in probability of detection.

Notes

© 2016 IEEE

ID: 12735971