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Open AccessArticle

A Further Exploration of Multi-Slot Based Spectrum Sensing

by 1, 1,* and 2,*
College of Mechatronic Engineering, North University of China, Taiyuan 030051, China
School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
Authors to whom correspondence should be addressed.
Sensors 2019, 19(16), 3497;
Received: 28 June 2019 / Revised: 1 August 2019 / Accepted: 6 August 2019 / Published: 9 August 2019
(This article belongs to the Special Issue Sensor Technologies for Smart Industry and Smart Infrastructure)
Spectrum sensing (SS) exhibits its advantages in the era of Internet of Things (IoT) due to limited spectrum resource and a lower utilization rate of authorized spectrum. In consequence, the performance improvement of SS seems a matter of great significance for the development of wireless communication and IoT. Motivated by this, this paper is devoted to multi-slot based SS in specialty and several important conclusions are drawn. Firstly, SS with one slot outperforms those with multiple slots if decision fusion rule is considered for multi-slot based SS. Secondly, multi-slot based SS is conducive to the performance improvement of SS when instantaneous strong noise occurs in the radio environment. Thirdly, for multi-slot based cooperative spectrum sensing (CSS), majority voting rule among multiple nodes obtains the optimal sensing performance. Both theoretical analysis and simulation experiment validate the conclusions drawn in this paper. View Full-Text
Keywords: spectrum sensing; internet of things; cooperative spectrum sensing spectrum sensing; internet of things; cooperative spectrum sensing
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Zhu, J.; Cao, H.; Mu, J. A Further Exploration of Multi-Slot Based Spectrum Sensing. Sensors 2019, 19, 3497.

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