journal6 ›› 2010, Vol. 31 ›› Issue (5): 50-54.

• Information and Engineering • Previous Articles     Next Articles

A Hybrid Weighted Algorithm of Cooperative Spectrum Sensing in Cognitive Radio Networks


  1. (School of Communication Engieering,Nanjing Institute of Technology,Nanjing 211167,China)
  • Online:2010-09-25 Published:2012-04-12

Abstract: The key technology of cooperative spectrum sensing is to reduce control channel costs.A  weighted algorithm of cooperative spectrum sensing based on signal to noise ratio is proposed.The contribution is determined by the SNR of detection channel for soft decision result of double threshold,and  a relevant weighted value is allocated.Thereby,the invalid transmission is reduced.The simulation results show thatt his,algorithm can improve cooperation detection probability;meanwhile,it can reduce average sensing bit and  reduce overhead of common control channel.

Key words: cognitive radio, cooperative spectrum sensing, iterative algorithm, weighted algorithm

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