Energy detector using adaptive-fixed thresholds in cognitive radio systems

Jong Whan Lee, Jong Ho Kim, Hyeong Joo Oh, Seung Hoon Hwang

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

20 Scopus citations

Abstract

Cognitive Radio systems offer the opportunity to improve spectrum utilization by detecting unused spectrum bands while avoiding the interference to primary users. In this paper, we propose a new algorithm for spectrum sensing, which is energy detector using both adaptive and fixed threshold, in order to compensate the weak points of the existing energy detector in the distorted communication channel environment. The simulation results show that the performance of the proposed scheme is much better than the existing scheme. Additionally, the performance is described in terms of the complementary ROC curve. It is shown that the proposed algorithm makes the detector highly robust against fading, shadowing, and interference by simulation results. copyright

Original languageEnglish
Title of host publication2008 14th Asia-Pacific Conference on Communications, APCC 2008
StatePublished - 2008
Event2008 14th Asia-Pacific Conference on Communications, APCC 2008 - Akihabara, Tokyo, United States
Duration: 14 Oct 200816 Oct 2008

Publication series

Name2008 14th Asia-Pacific Conference on Communications, APCC 2008

Conference

Conference2008 14th Asia-Pacific Conference on Communications, APCC 2008
Country/TerritoryUnited States
CityAkihabara, Tokyo
Period14/10/0816/10/08

Keywords

  • Adaptive threshold
  • Cognitive radio
  • Energy detector
  • Fixed threshold
  • Primary user
  • Secondary user

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