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Performance Analysis of Distributed Cooperative Spectrum Sensing in Cognitive Radio Networks with Different Fading Environments

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The speedy development in wireless communications has put in to a vast demand on the consumption of new wireless services in both the licensed and unlicensed frequency spectrum. Hence, the Spectrum sensing is essential for better utilization of spectrum and to prevent interference with other users. On the other hand, the detection performance is suffered by multipath fading, shadowing and receiver uncertainty issues. To alleviate the impact of these issues, cooperative spectrum sensing has been developed to improve the detection performance by exploiting spatial diversity. Hence the performance of cooperative spectrum sensing for different number of CR users in cognitive radio over fading channels such as Rician, Rayleigh and Nakagami is studied and evaluated using MAT-LAB simulation. Hard decision combining fusion rule (OR-logic; AND-logic and MAJORITY-logic) is performed at fusion center (FC) to make the final decision about the presence of PU.
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Keywords: Cognitive Radio; Cooperative Spectrum Sensing; Energy Detection; Fading Channels

Document Type: Research Article

Affiliations: 1: Department of ECE, SNS College of Technology, Coimbatore 641035, Tamilnadu, India 2: Department of EEE, Karpagam Institute of Technology, Coimbatore 641105, Tamilnadu, India

Publication date: August 1, 2016

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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