On Selection of Parameters for Cooperative Spectrum Sensing Schemes over κ–μ Fading Channels

Abstract

The current paper studies comprehensive analysis of various cooperative spectrum sensing (CSS) schemes in generalized $\kappa -\mu$ fading environment. More precisely, the optimization of several network parameters as well as throughput performance analysis of various CSS schemes are studied. In each CSS scheme, every cognitive radio user (CRU) first senses and receives the primary user (PU) signal using sensing channels, performs an energy detection (ED) operation. Depending upon the type of the scheme, CRU makes and forwards its local binary decision or simply forwards its data to the fusion center (FC) with the help of reporting channels. Then FC implements any one of the CSS schemes for making a final decision about busy or free status on PU. The novel expressions for missed and false detection probabilities subject to CSS scheme under fading are developed. The performance of several decision and data CSS schemes through total error rate, considering different network and $\kappa -\mu$ fading parameters is investigated. The impact of erroneous channel conditions on each CSS scheme is investigated. The expressions for optimal system parameters of decision-based CSS schemes under fading are developed and optimal values for different network conditions are estimated. Further, the throughput performance of decision-based CSS schemes for different networks and $\kappa -\mu$ fading parameters values is studied.

Keywords:

• Cognitive radio
• CSS scheme
• Generalized fading
• Optimization
• Throughput
• Total error rate

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Srinivas Nallagonda

Srinivas Nallagonda received the BE degree in ECE from Osmania University, Hyderabad, India, in 2006, the MTech degree in TE, and the PhD degree in WC from National Institute of Technology (NIT), Durgapur, India, in 2009 and 2014, respectively. He worked from 2009 to 2010 as assistant professor in SRTIST and from 2014 to 2017 in MVSREC. At present, he has been working as associate professor in the Department of ECE, MLRITM, Hyderabad India from 2017. He has received Emerging Young Leader Award in Higher education from Veenus International Foundation, Chennai.

His research areas include development of wireless networks over fading models and diversity techniques, and spectrum sensing related issues in cognitive radio networks. Till today, he published sixty (60) papers in several IEEE international conferences, journals, and book chapters. He is a IEEE member and also a reviewer.

Abhijit Bhowmick

Abhijit Bhowmick received BE (Hons) degree in electronics and telecommunication engineering from Burdwan University, West Bengal, India in 2002, MTech degree in telecommunication engineering in 2009 and PhD from NIT Durgapur in 2016. From 2004 to 2006, he worked for Cubix Control System Pvt Ltd. Next, he worked as lecturer in Bengal College of Engineering and Technology, Durgapur in 2006. He is working as associate professor in the School of Electronics Engineering (SENSE) in VIT University, Vellore, TN, India, from 2016. His areas of research interest includes cognitive radio networks, cooperative communication, energy harvesting, D2D communication, M2M communication, and UAV-based communication. He published over forty-five (45) research papers in several international journals and conferences. He is also a IEEE member and reviewer of various IEEE, Springer, Wiley and Elsevier journals. Email: [email protected]

Binod Prasad

Binod Prasad received BTech and MTech degrees in ECE from WBUT in 2006 and 2011, respectively. He also received PhD from NIT Durgapur in 2017. He was also associated with Indian Institute of Technology Guwahati as a post-doctoral fellow from March 2018 to February 2019 and currently serving as assistant professor at Atal Bihari Vajpayee-Indian Institute of Information Technology & Management, Gwalior. His areas of research interest include cognitive radio networks, co-operative communication, energy harvesting and physical layer security. He is a IEEE member and a reviewer. Email: [email protected]