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Kantikar, Rohit
- Cooperative Spectrum Sensing Scheme using Fuzzy Logic Technique
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Authors
Affiliations
1 Department of Electronics and Communications Engineering, Pune Institute of Computer Technology, IN
1 Department of Electronics and Communications Engineering, Pune Institute of Computer Technology, IN
Source
ICTACT Journal on Communication Technology, Vol 9, No 4 (2018), Pagination: 1893-1898Abstract
In communication system spectrum has a crucial role and wireless technologies are increasing rapidly it is required to make efficient use of spectrum to satisfy the spectrum scarcity problem. Using spectrum efficiently can be done by cognitive radio because of its ability to sense surrounding environment. Cognitive radio sense unoccupied spectrum by detecting the primary users’ presence or absence in the spectrum. Using more than one cognitive radio in the detection process will increase the efficiency of spectrum usage and prevent interference between signals. Using machine learning techniques for the implementation of intelligent cognitive radio increase efficiency and detection performance and detect signal at low SNR condition. Fuzzy logic machine learning technique is implemented which is based on fuzzy membership functions and fusion centre. Energy detection is used to classify signal and noise at each cognitive radio after that each cognitive radio output information convert into membership function and apply fuzzy rules such as algebraic sum, the algebraic product give a final decision about the signal presence or absence. Simulation results show that the proposed system gives much better results compared to the conventional energy detection system and improves the performance of the system.Keywords
Cognitive Radio, Energy Detection, Cooperative Spectrum Sensing, Fuzzy Logic, Membership Functions.
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