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World Journal of Engineering
Research and Technology

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Engineering Research and Technology

ISSN 2454-695X

Impact Factor : 5.924

ICV : 79.45

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Abstract

IMPROVEMENT IN COOPERATIVE SPECTRUM SENSING ON COGNITIVE RADIO NETWORKS IN AWGN AND RAYLEIGH FADING ENVIRONMENTS

Rayan Abdelazeem Haboub Suliman* and Khalid Hamid Bilal*

ABSTRACT

Cognitive radios (CRs) have lately emerged as promising possibilities for improving spectral efficiency by utilizing spectrum-aware systems that accurately monitor licensed users' activity. Spectrum sensing is used by CR users to detect potential white spaces in such activities. Local sensing, on the other hand, could be a useful tool. In fading situations, this is a difficult task. If spectrum sensing is ineffective, licensees may experience interference. They are detected incorrectly by CR users. Thus, cooperative spectrum sensing is proposed as a means to combat fading and enhance the accuracy of detection However, when such cooperation is used, the detection performance does not improve. A low-SNR environment is taken into account. Cooperative spectrum sensing with PSO-based threshold adaptation is discussed in this study is given as a solution to the aforementioned issue. Simulation results suggest that using a PSO-based adaptive detection threshold improves detection performance, especially in low-SNR environments.

[Full Text Article]