Optimized Dynamic Threshold Adjustment Method for Cooperative Detection
Yedunuri Shekar1, Kanne Naveen2, Rajkumar Maharaju3
1Yedunuri Shekar, Department, Electronics and Communications Engineering, S R Engineering College, Warangal, India.
2Kanne Naveen, Department, Electronics and Communications Engineering, S R Engineering College, Warangal, India.
3Rajkumar Maharaju, Department, Electronics and Communications Engineering, S R Engineering College, Warangal, India.
Manuscript received on 10 June 2019 | Revised Manuscript received on 17 June 2019 | Manuscript Published on 19 June 2019 | PP: 630-634 | Volume-8 Issue-8S June 2019 | Retrieval Number: H11070688S19/19©BEIESP
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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: In this paper optimized spectrum detection method with dynamic threshold adjustment is proposed, to improve the spectrum efficiency of cooperative sensing and to reduce the system overhead. Based on single sensing node minimum error detection probability an expression for dynamic threshold under different channel environment is derived. Optimal sensing node number is obtained according to the constant detection and constant false alarm rate, and the system detection error probability is obtained by combining the optimal number of sensing nodes with the adaptive threshold. Simulation result shows that the proposed method can improve the detection probability and reduce the detection error probability.
Keywords: Cognitive Radio, Cooperative Spectrum Sensing, Cognitive Radio Networks.
Scope of the Article: Multimedia and Real-Time Communication