Outage Probability and Throughput Analysis of Cooperative NOMA System using Moving Relay

The cell edge users suffer from low signal strength and interference from neighboring cells. Additionally, in a vehicular scenario, vehicle penetration loss (VPL) exacerbates and reduces signal strength badly at the cell edge, which results in poor coverage and low quality of service (QoS). Outage probability and throughput are important parameters that cell edge users need to analyze. Recent research shows that non-orthogonal multiple access (NOMA) and amplify and forward relaying based moving relay (MR) are promising techniques for handling these issues. The performance of decode forward relaying based MR has not been analyzed yet. In this paper, we propose a cooperative NOMA system with full duplex decode forward (FD-DF) relaying based MR on the roof of a vehicle for a downlink network to analyze the performance of cell edge vehicular users. We derive the outage probability capacity of vehicular cell edge and non vehicular users. We analyze vehicular users’ outages and throughput performances in terms of transmit signal-to-noise ratio (SNR), power allocation coefficient, and residual interference levels. Simulation results show that FD-DFR based MR performs better than systems with half duplex decode forward (HD-DF) relaying based MR and without MR.