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Enhancing cooperative spectrum sensing in cognitive radio ad hoc networks using priority-based two-stage detection model

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Abstract

Cooperation among unlicensed secondary users was more significant in cognitive radio ad hoc networks (CRAHNs). The main challenges of CRAHNs now a day address the main issues of spectrum scarcity and underutilization. Due to the lack of channel sensing, cooperative spectrum sensing (CSS) is the main challenge in CRAHNs. Efficient CSS is more essential to enhance the detection of performance by utilizing the theoretical studies of spatially distributed secondary users (SUs). This paper uses the priority-based two-stage detection model (PBTSDM) to analyze the cooperation strategy among secondary users (SUs) and primary users (PUs). SUs in distributed CSS sense continuously amongst themselves and take unified decision on the presence or absence of PUs by using entropy-based energy detection mechanism. The simulation results reveal that the sensing accuracy in terms of sensing time and energy efficiency (in terms of minimum energy consumption) increased significantly by using the proposed scheme.

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Authors and Affiliations

  1. Department of Information Technology, National Engineering College, K.R. Nagar, Kovilpatti, Tamil Nadu, 628 503, India

    R. Muthukkumar & D. Manimegalai

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  1. R. Muthukkumar
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  2. D. Manimegalai
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Correspondence to R. Muthukkumar.

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Muthukkumar, R., Manimegalai, D. Enhancing cooperative spectrum sensing in cognitive radio ad hoc networks using priority-based two-stage detection model. Wireless Netw 24, 3295–3307 (2018). https://doi.org/10.1007/s11276-017-1536-8

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  • DOI: https://doi.org/10.1007/s11276-017-1536-8

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