A Reliable Co-operative Decision-Making Technique for the Improvement in the Performance of Multi-User CRN Using Coalition Game Theory

Abstract

In the past few years, there has been a proliferation in commercial wireless services such as mobile, Wi-Fi, TV, etc. This has raised a demand for radio spectrum. As per the reports of spectrum occupancy and spectrum policy task force, most of the allocated spectrums are underutilized. Cognitive radio is an emerging technology, which can improve the spectrum utilization efficiency. Reliable spectrum sensing decision-making is a strenuous task in multi-user cognitive radio network (CRN). For enhancing spectrum utilization of such a network and obtaining a faster collaborative decision from honest secondary users, this paper proposes a reliable intra-coalition and inter-coalition decision-making technique (DMT). In this technique, the investigation of Pareto optimal coalitions is performed. Spectrum/channels have been allocated based on Pareto optimality of coalitions. Further, the performance of multi-user CRN has been evaluated using the proposed and traditional DMTs (i.e. OR/AND/maximum voting/half voting rules). It has been noticed that the proposed DMT outperforms DMTs. The performance parameters such as fusion decision processing time and the end-to-end communication delay to obtain a reliable collaborative decision have been reduced by approximately 50% using the proposed DMT compared to the traditional DMTs.

KEYWORDS:

• Cognitive radio network
• Cooperative communication
• Pareto optimal coalition formation
• Reliable cooperative decision-making technique

Additional information

Notes on contributors

Rakhi A. Khedkar

Rakhi A Khedkar – She has completed MTech in electronics and telecommunication engineering from College of Engineering Pune, Pune University, India, in 2006. She is currently working on achieving PhD degree in electronics and telecommunication at College of Engineering, Pune, India, and has been working as an assistant professor in K J College of Engineering Pune, India since 2010. She worked as a lecturer in Jaywantrao Sawant College of Engineering from 2005 to 2010, Pune, India. She has been a life member of IETE since 2011. Her research interests include wireless communication, cognitive radio communication, fiber optic communication, etc. Corresponding author. Email: [email protected]

R. A. Patil

Rajendrakumar A Patil – is a associate professor at Department of Electronics and Telecommunication, College of Engineering, Pune, India. He has completed his PhD from Indian Institute of Technology Bombay (IIT Bombay), India. His areas of interest include communication engineering, next generation wireless network protocols, cross layer protocol optimization,co-operative relay networks, cognitive radio and performance modeling of networks. He has around 30 years of rich experience in the fields of teaching and research. Currently, he guides MTech and PhD students in the related areas. Email: [email protected]