Journal on Communications ›› 2012, Vol. 33 ›› Issue (Z2): 118-124.doi: 10.3969/j.issn.1000-436x.2012.z2.015

• Papers • Previous Articles     Next Articles

Statistical covariance blind detection algorithm based on cholesky factorization in cognitive radio network

Ying-xue LI1,Shu-qun SHEN1,Lang-tao HU2,Qiu-cai WANG2   

  1. 1 School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China
    2 School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China
  • Online:2012-11-25 Published:2017-08-03
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China

Abstract:

As the blind covariance detection algorithm has the shortcoming that the performance parameters are obtained using non-asymptotic method,a new blind detection algorithm was presented using cholesky factorization.Utilizing random matrix theory,the performance parameters was derived using non-asymptotic method.The proposed method overcomes the noise uncertainty problem and performs well without information about the channel,primary user and noise.Numerical simulation results demonstrate that the performance parameters expressions are correct and the new detector outperforms the other blind covariance detectors.

Key words: covariance matrix, cognitive radio network, wishart distribution, choleskyfactorization, blind detection

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