Performance of Energy Detection in Cognitive Radio Systems over a Multipath Fading Channel

  • Hongbin Chen
  • Feng Zhao
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 127)


In this paper, the performance of energy detection in cognitive radio systems over a multipath fading channel is evaluated. The secondary user performs spectrum sensing using energy detection based on the primary signal that has traversed a multipath fading channel. The detection probability and false alarm probability are calculated and simulated. The results show that the detection probability is affected by the quadratic sum of fading coefficients while the false alarm probability keeps fixed. Moreover, more paths and larger fading coefficients may not lead to higher detection probability.


Cognitive Radio Fading Channel Detection Probability Primary User Secondary User 
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Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Key Laboratory of Cognitive Radio and Information ProcessingGuilin University of Electronic Technology, Ministry of EducationGuilinChina
  2. 2.National Mobile Communications Research LaboratorySoutheast UniversityNanjingChina

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