Fair power allocation in cooperative cognitive systems under NOMA transmission for future IoT networks

• DOI: 10.1016/j.aej.2021.04.107
• Publication Date: 2021-07-24T12:58:05Z
• Authors: Zain Ali; Wali Ullah Khan; Guftaar Ahmad Sar...; Nimmi K; Xingwang Li; Kyung Sup Kwak; Muhammad Bilal
• Keywords: Power optimization access; Cognitive radio; Internet of Things; Non-orthogonal multiple; 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology; TA1-2040; Engineering (General). Civil engineering (General); Cooperative communication

This work aims to achieve fairness among secondary users (SUs) in IoT cooperative NOMA-based CR transmission. We design a power allocation algorithm for secondary IoT network that ensures protection of primary system. Further, an independent battery constraint at each node is considered, and power gap among transmissions of two NOMA users is applied for successive interference cancellation. Our extensive simulation results show that the proposed framework provides excellent performance and for sufficient available transmission power perfect fairness is achieved in the rate of both the users.