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International Journal of Sensors, Wireless Communications and Control

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ISSN (Print): 2210-3279
ISSN (Online): 2210-3287

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Research Article

Cooperative Spectrum Sensing under SISO and MIMO Environment for Cognitive Radio Networks

Author(s): Kavita Bani* and Vaishali Kulkarni

Volume 12, Issue 4, 2022

Published on: 02 June, 2022

Page: [302 - 311] Pages: 10

DOI: 10.2174/2210327912666220325155817

Price: $65

Abstract

Background: Increasing demand for wireless devices leads to the efficient use of spectrum resources. Despite the limited availability of spectrum resources, all licensed users do not utilize their spectrum all the time.

Objective: Cognitive Radio (CR) is used to detect free channels in the available spectrum resources and access them dynamically without interfering with licensed users. Various spectrum sensing (SS) techniques are available to sense the spectrum of licensed users.

Methods: The spectrum sensing technique, energy detector (ED), is analysed under a Rayleigh fading channel. Further, Single Input Single Output (SISO) and Multiple Input Multiple Output (MIMO) channel models are developed in the consumer environment. The ED technique is further analysed with cooperative spectrum sensing (CSS) to overcome detection problems for a single CR user.

Results: The ED achieves a probability of detection (PD) of 0.9 and a probability of false alarm (PFA) of 0.1 at the lowest SNR of −20 dB, which is the requirement for a standard IEEE 802.22 Wireless Regional Area Network (WRAN).

Conclusion: Various receiver operating characteristics are determined by conducting practical simulations and theoretical calculations for each SISO and MIMO channel model with and without the CSS scenario to achieve the target PD and PFA .

Keywords: Cognitive Radio (CR), Cooperative Spectrum Sensing (CSS), Energy Detector (ED), Single Input Single Output (SISO), Multiple Input Multiple Output (MIMO), Probability of Detection (PD), Probability of False Alarm (PFA) .

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