A Power Auction Approach For Non-Orthogonal Multiple Access Wireless Relay Communications

Drastic growth in multimedia driven applications is pushing the boundaries of current wireless networks, commending for better power efficient communications. Non-Orthogonal Multiple Access (NOMA) has been adopted to improve the coverage area, spectrum, and energy efficiency in the next generation wireless access networks. Meanwhile, the potentials of Device-to-Device (D2D) relay communications also sparks an interest among the researchers to improve power efficiency due to the shorter distance between relay and receiver. In this paper, we are considering a NOMA power allocation approach in wireless network with support of D2D relay communications. We explore auctioning techniques for power purchasing to incentivize the relaying devices. The main contribution of this work is to show that the users can significantly improve their Quality of Experience (QoE) and relaying devices can maximize rewards using the proposed power auction approach in the NOMA relay framework. Solutions for two auctioning techniques - sealed first price auction and sealed second price auction - have been discussed in this manuscript for power allocation. Simulations studies and the results indicate Vickery-Clarke-Groves (VCG) second price auction as a suitable paradigm to boost user QoE and reward the participating relays power transmission in the NOMA wireless networks. The results also showcase that NOMA Relay networks are sustainable and reduce the net power transmitted to meet user demands.