Open AccessEnergy-Efficient Cluster-Based Cooperative Spectrum Sensing in a Multiple Antenna Cognitive Radio Network
Author(s) -
Samson I. Ojo,
Zachaeus K. Adeyemo,
Damilare Oluwole Akande,
Ayobami O. Fawole
Publication year - 2021
Publication title -
international journal of electrical and electronic engineering and telecommunications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.171
H-Index - 6
ISSN - 2319-2518
DOI - 10.18178/ijeetc.10.3.176-185
Subject(s) - cognitive radio , multipath propagation , computer science , detector , inefficiency , interference (communication) , fusion rules , bandwidth (computing) , spectral efficiency , energy (signal processing) , antenna (radio) , electronic engineering , computer network , telecommunications , artificial intelligence , engineering , wireless , mathematics , statistics , channel (broadcasting) , image (mathematics) , economics , image fusion , microeconomics
Spectrum Hole Detection (SHD) is a major operation in a Cognitive Radio (CR) network to identify empty spectrum for maximum utilization. However, SHD is often affected by multipath effects resulting in interference. The existing techniques used to address these problems are faced by poor detection rate, long sensing time and bandwidth inefficiency. Hence, this paper proposes a cluster-based Energy-Efficient Multiple Antenna Cooperative Spectrum Sensing (EEMACSS) for SHD in CR networks using Energy Detector (ED) with a modified combiner. Multiple secondary users are used to carry out local sensing using ED in multiple antenna configurations. The local sensing results are combined at the cluster head using majority fusion rule to determine the sensing results at each cluster. The sensing results from individual cluster are combined to determine the global sensing result using OR fusion rule. The proposed EEMACSS is evaluated using Probability of Detection (PD), Sensing Time (ST) and Spectral Efficiency (SE) by comparing with existing techniques. The results reveal that the proposed technique shows better performance.