Analysis of Energy Detector Based Spectrum Sensing in Fading Cooperative Cognitive Network  
  Authors : S. ARUL SELVI; Dr.T.V.U.KIRAN KUMAR

 

Ever increasing wireless services and networks results in spectrum scarcity. But already allocated spectrum is in under utilization in the current static fixed spectrum allocation method .So dynamic spectrum access is only solution for this issue .Spectrum sensing is one of the key technique in cognitive radio for dynamic spectrum access. There are many algorithm proposed for the spectrum sensing. Among all the algorithm energy detector is the only one that is less computationally complex so it is adapted as one of the candidate in 802.22 standard of TV white space based RAN network. Many research work proposed on energy detector based spectrum sensing but all focus on AWN channel of non-fading environment. But real channel is not always non fading one .In case of the cooperative spectrum sensing with different cognitive radio different channel will be experienced, some will be fading .So here in this paper an analysis of energy detector performance on Rayleigh fading environment is going to analyze under cooperative spectrum sensing .Under this analysis the amplify and forward network and indoor cases also considered and performance is studied.

 

Published In : IJCAT Journal Volume 1, Issue 5

Date of Publication : 30 June 2014

Pages : 179 - 182

Figures : 07

Tables : --

Publication Link : Analysis of Energy Detector Based Spectrum Sensing in Fading Cooperative Cognitive Network

 

 

 

S. ARUL SELVI : Electronics And Communication Department, Bharath University Chennai, Tamilnadu, 600073, India

Dr.T.V.U.KIRAN KUMAR : Electronics And Communication Department, Bharath University Chennai, Tamilnadu, 600073, India

 

 

 

 

 

 

 

Cognitive radio

Spectrum Sensing

Energy Detector

Amplify and Forward Network

This paper analyzed the performance of the energy detector spectrum sensing algorithm in Rayleigh fading environment and the result is compared with AWGN channel .The cooperative sensing based on the AND rule based decision is simulated and the performance in evaluated for the cases of indoor and amplify and forward cooperative networks. From the result we can conclude that Rayleigh fading supports the energy detection based algorithm comparing AWGN case but in the indoor scenario the performance is same for both AWGN and Rayleigh case. The energy detection algorithm performance is very good in the amplify and forward based relay cooperative networks. But we observe some kind of small oscillation because of the incomplete inverse gamma function based thresholding.

 

 

 

 

 

 

 

 

 

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