Premium
Maximizing the lifetime of energy‐constrained cooperative spectrum sensing sensor network
Author(s) -
Shukry Suzan,
Fahmy Yasmine
Publication year - 2018
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.3569
Subject(s) - cognitive radio , computer science , wireless sensor network , energy (signal processing) , scheme (mathematics) , wireless , key distribution in wireless sensor networks , real time computing , process (computing) , efficient energy use , computer network , wireless network , telecommunications , electrical engineering , engineering , mathematical analysis , statistics , mathematics , operating system
Summary Adding the cognitive capability to wireless sensor networks allows the sensors to monitor the spectrum and identify the spectrum holes to operate in different frequencies according to the radio environment which result in better spectrum utilization. Spectrum sensing is a main component in any cognitive radio network. In this paper, we propose a new cooperative sensing scheme based on energy detection for cognitive sensor networks which is constrained by the energy limitation of the wireless sensor elements. The proposed scheme minimizes the sensing energy for individual sensor and carefully selects the suitable participant sensors in each cooperative sensing process. This results in maximizing the lifetime of energy‐constrained wireless sensor networks. The proposed scheme also takes into consideration the constraints on the detection accuracy. The simulation results show that the proposed scheme prolonged the lifetime of the cognitive network, makes efficient usage of available spectrum by secondary users, and satisfy the target detection performance.