Joint evaluation of imperfect SIC and fixed power allocation scheme for wireless powered D2D-NOMA networks with multiple antennas at base station

Abstract

In this study, device-to-device (D2D) communication is exploited to adopt the proximity transmission among two nearby devices. The base station in this scenario transmits both information and energy to both D2D users to deploy wireless power transfer feature in green communications. In addition, to enhance the overall spectrum utilization of considered system, downlink non-orthogonal multiple access (NOMA) network is considered to evaluate performance in such network. In particular, a downlink from the base station (BS) equipping multiple antennas is designed to robust performance. We further determine the worse case of considered NOMA at the receiver in cellular network as considering impact of imperfect successive interference cancellation (SIC). A two-user downlink NOMA scenario is considered, where a far user directly communicates with the BS without SIC, whereas a near user is assigned to serve D2D link with imperfects on SIC. The ergodic capacity of D2D NOMA is further analyzed under both perfect and imperfect SIC. The performance gap among two considered users in D2D NOMA network is demonstrated through simulation and analysis.