Performance Analysis of Cooperative NOMA with Partial Relay Selection under Outdated Channel Estimate

摘要

In this work, the performance of cooperative non-orthogonal multiple access (NOMA) partial relay selection (PRS) based system under outdated channel state information (CSI) is investigated. The relay nodes employ amplify-and-forward relaying protocol and the dual-hops links in the system are subjected to Rayleigh fading distributions. In order to evaluate the system performance, the outage probability closed-form expression for the concerned system is derived. The results illustrate that the channel correlation coefficient, relay selection mode and relay location significantly affect the system performance. Finally, the accuracy of the derived expression is validated through the Monte-Carlo simulation.