Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6879710 | AEU - International Journal of Electronics and Communications | 2018 | 7 Pages |
Abstract
Internet of things contains the hefty number of devices with diverse types of communication interfaces. Therefore, these devices act as a source of interference to the primary users in the absence of appropriate collision detection technique. Spectrum sensing is the important function of cognitive radio and energy detector is the most popular technique used for spectrum sensing. Detection of the availability of unused spectrum for the secondary user becomes difficult when the channel is affected by composite multipath/shadowed fading. In this paper, analytical expressions of average probability of detection and average area under the receiver operating characteristic over Nakagami-m/log-normal with maximum ratio combining diversity are derived using Gaussian-Hermite integration approximation. In addition, an optimized threshold has been incorporated to overcome the problem of spectrum sensing even at low signal-to-noise ratio. To verify the correctness of exact results and derived analytical expressions, Monte Carlo simulations are incorporated.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Pappu Kumar Verma, Sanjay Kumar Soni, Priyanka Jain,