Sensing performance of energy detector in cognitive radio networks

• Published in: International journal of information technology (Singapore. Online) Vol. 11; no. 4; pp. 773 - 778
• Main Authors: Ghosh, Samit Kumar, Mehedi, Jishan, Samal, Umesh Chandra
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01.12.2019; Springer Nature B.V
• Subjects: Cognitive radio; Communications systems; Computer Communication Networks; Computer Science; Computer Systems Organization and Communication Networks; Detection; Error detection; False alarms; Gaussian distribution; Information Systems and Communication Service; Management of Computing and Information Systems; Original Research; Random noise; Signal to noise ratio; Software Engineering/Programming and Operating Systems; Spectrum sensing; Energy detection; Cognitive radio networks; Probability of detection
• ISSN: 2511-2104; 2511-2112
• DOI: 10.1007/s41870-018-0236-7

In order to increase the spectral efficiency of any communication systems, spectrum sensing techniques may be used for proficient utilization of inadequate spectrum resources. It identifies the unused spectrum holes, which is originally assigned to the primary users (PU). These spectrum holes are then assigned to the secondary or cognitive users with avoiding interference to the primary users. In this paper, a spectrum assignment technique based on energy detection technique is proposed. This enhanced energy detection technique works well at low signal-to-noise ratio (SNR), which makes the communication system more power efficient and can be for low power applications. Further, the performance of the proposed spectrum sensing method is examined for cognitive radio (CR) network. The performance of the proposed method is also examined by calculating the probability of detection, probability of false alarm and error probability in presence of additive Gaussian noise and the effect of different sensing parameters on the probability of error in detecting primary users are also evaluated.