Article: Performance analysis of cognitive radio NOMA wireless communication systems Journal: International Journal of Wireless and Mobile Computing (IJWMC) 2025 Vol.29 No.2 pp.103 - 115 Abstract: The rapid expansion of wireless communication necessitates innovative strategies to enhance spectrum efficiency. This paper explores two key technologies: Cognitive Radio (CR) and Non-Orthogonal Multiple Access (NOMA), which address the pressing need for improved spectrum utilisation. CR enables unlicensed users to access spectrum dynamically, mitigating scarcity, while NOMA allows multiple users to share the same frequency resources, thereby boosting spectral efficiency. The integration of CR and NOMA (CR-NOMA) systems holds promise for maximising spectrum efficiency and accommodating the growing number of connected devices. We present a thorough performance analysis of CR-NOMA systems, focusing on critical metrics such as outage probability, achievable data rates and overall spectral efficiency. The study includes a detailed system model, analytical derivations for key performance indicators, and validation through extensive simulations. Our findings offer valuable insights for optimising system design and operation, contributing to the practical implementation of CR-NOMA technologies. This research aims to inform the development of next-generation wireless networks capable of efficiently supporting diverse applications and services, particularly in environments with stringent spectrum demands and varying Quality-of-Service (QoS) requirements. Inderscience Publishers - linking academia, business and industry through research

Title: Performance analysis of cognitive radio NOMA wireless communication systems

Authors: Huu Q. Tran

Addresses: Faculty of Electronics Technology, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam

Abstract: The rapid expansion of wireless communication necessitates innovative strategies to enhance spectrum efficiency. This paper explores two key technologies: Cognitive Radio (CR) and Non-Orthogonal Multiple Access (NOMA), which address the pressing need for improved spectrum utilisation. CR enables unlicensed users to access spectrum dynamically, mitigating scarcity, while NOMA allows multiple users to share the same frequency resources, thereby boosting spectral efficiency. The integration of CR and NOMA (CR-NOMA) systems holds promise for maximising spectrum efficiency and accommodating the growing number of connected devices. We present a thorough performance analysis of CR-NOMA systems, focusing on critical metrics such as outage probability, achievable data rates and overall spectral efficiency. The study includes a detailed system model, analytical derivations for key performance indicators, and validation through extensive simulations. Our findings offer valuable insights for optimising system design and operation, contributing to the practical implementation of CR-NOMA technologies. This research aims to inform the development of next-generation wireless networks capable of efficiently supporting diverse applications and services, particularly in environments with stringent spectrum demands and varying Quality-of-Service (QoS) requirements.

Keywords: achievable data rate; cognitive radio; CR-NOMA; non-orthogonal multiple access; outage probability; quality of service; spectrum efficiency; system performance analysis.

DOI: 10.1504/IJWMC.2025.148113

International Journal of Wireless and Mobile Computing, 2025 Vol.29 No.2, pp.103 - 115

Received: 30 Jul 2024
Accepted: 17 Dec 2024
Published online: 25 Aug 2025 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article

Title: Performance analysis of cognitive radio NOMA wireless communication systems

Keep up-to-date