The impact of secondary user mobility and primary user activity on spectrum sensing in cognitive vehicular networks

Danda B. Rawat, Tanjil Amin, Min Song

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

25 Scopus citations

Abstract

In cognitive vehicular networks, unlicensed secondary users heavily depend on spectrum sensing to find unused spectrum bands for communications. The performance study of existing spectrum sensing algorithms often overlooks the impact of secondary user mobility.Many of them assume secondary users stationary or with low mobility. In this paper, we investigate the joint impact of secondary user mobility and primary user activity on spectrum sensing for highly dynamic cognitive vehicular networks. We assume that each vehicle is equipped with a cognitive radio for spectrum sensing. The main contribution of this work is to investigate mathematical models for missdetection probability and expected overlapping time duration for spectrum sensing. The proposed method incorporates velocity of secondary user, activity of primary user, initial distance between primary and secondary users and their transmission ranges. In ordered to corroborate the analysis, numerical results obtained from simulations are presented. It is noted that the speed of the vehicular secondary user and the activity of primary user have significant impact on miss-detection probability, but not on false alarm probability. Furthermore, transmission range, velocity and initial separation distance have huge impact on expected overlapping time duration.

Original languageEnglish
Title of host publication2015 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015
Pages588-593
Number of pages6
ISBN (Electronic)9781467371315
DOIs
StatePublished - 4 Aug 2015
EventIEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015 - Hong Kong, Hong Kong
Duration: 26 Apr 20151 May 2015

Publication series

NameProceedings - IEEE INFOCOM
Volume2015-August
ISSN (Print)0743-166X

Conference

ConferenceIEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015
Country/TerritoryHong Kong
CityHong Kong
Period26/04/151/05/15

Keywords

  • Cognitive vehicular networks
  • miss-detection probability
  • secondary user mobility
  • spectrum sensing performance

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