Mathematical analysis for detection probability in cognitive radio networks over wireless communication channels

The Journal of Engineering

Rohitha Ujjinimatad¹  Siddarama R. Patil² 

[1] Department of Electronics and Communication Engineering, Ballari Institute of Technology and Management, Bellary 583 104, Karnataka, India;Electronics and Communication Engineering Department, PDA College of Engineering, Gulbarga, Karnataka, India

关键词: mathematical analysis;    lognormal shadowing fading channels;    Marcum-Q function;    nonfading additive white Gaussian noise channel;    probability distribution function;    analytical expressions;    cognitive radio networks;    nonfading effects;    detection probability;    wireless communication channels;    Rayleigh shadowing fading channels;    spectrum sensing;    closed-form expressions;    energy detection method;   

DOI  :  10.1049/joe.2014.0173

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

In this study, the authors consider the problem of spectrum sensing based on energy detection method in cognitive radio over wireless communication channels when users experience fading and non-fading effects. The closed-form analytical expressions for the detection probability are derived over non-fading additive white Gaussian noise channel and Rayleigh and log-normal shadowing fading channels. The detection probability involves Marcum-Q function, summations and integrations in the early research papers, which are replaced by closed-form expressions in this study. The probability distribution function of fading channels is used to obtain the expressions for detection probability. The new derived numerical results are simulated under various parameters. The performance of the derived theoretical expressions closely matches with the simulated results.

【 授权许可】

CC BY