An Optimized and Trained Model of Cooperative Sensing for Cognitive Radio Networks
Madan H T1, P I Basarkod2
1Madan H T, School of Electronics and communication, REVA University, Bengaluru, India.
2P I Basarkod, School of Electronics and communication, REVA University, Bengaluru, India.
Manuscript received on 13 August 2019. | Revised Manuscript received on 19 August 2019. | Manuscript published on 30 September 2019. | PP: 5176-5182 | Volume-8 Issue-3 September 2019 | Retrieval Number: C5803098319/2019©BEIESP | DOI: 10.35940/ijrte.C5803.098319
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Sensing based spectrum allocation is one of the solutions to bridge the gap between spectrum scarcity and underutilization of allocated spectrum. In this context, cognitive radio technology has become the prominent solution for future wireless communication problems. To accurately detect the spectrum availability, CRN uses cooperative spectrum sensing where N number of selected nodes will be involved in making a decision on spectrum occupation. Various sensing parameters such as sensing duration (τ), decision threshold (λ), number of nodes (N) and decision rule (K) have huge impact on the performance of cooperative spectrum sensing. In addition, there are constraints on energy consumption and protection of licensed user’s needs to be considered. Our work focuses on optimization of sensing parameters to maximize the throughput of the cognitive radio network maintaining the energy efficiency and protecting the licensed users from the interference caused by the secondary users. The proposed work uses convex optimization to optimize sensing duration and two-dimensional search algorithm to find the values N and K. Further optimization is done by comparing local decision with cooperative decision.
Keywords: Cognitive Radio, Fusion Rule, Cooperative Sensing, Detection Accuracy, Misdetection, False Alarm.
Scope of the Article: Cognitive Radio Networks