Outage Probability and Ergodic Capacity of a Two-User NOMA Relaying System with an Energy Harvesting Full-Duplex Relay and Its Interference at the Near User

Sensors

TranTrung Duy¹  LeThe Dung²  HoangVan Toan³  TranManh Hoang³ 

[1] Department of Telecommunications, Posts and Telecommunications Institute of Technology, Ho Chi Minh 700000, Vietnam;Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh 700000, Vietnam;Faculty of Telecommunications Services, Telecommunications University, Khanh Hoa 650000, Vietnam;

关键词: NOMA;    energy harvesting;    full-duplex;    inter-user interference;    outage probability;    ergodic capacity;   

DOI  :  10.3390/s20226472

来源: DOAJ

【 摘 要 】

In this paper, we consider a two-user downlink full-duplex (FD) non-orthogonal multiple access (NOMA) relay system where the FD relay uses an energy harvesting (EH) technique to assist the communication between the base station and far user over flat, independent and non-identically Rayleigh fading channels. Importantly, since the relay operates in FD mode, we take into account the effect of the interference caused by relay on the near user. Considering this EH-FD-NOMA relay system, we derive the exact mathematical expressions of the outage probabilities and ergodic capacities of near and far users. Monte–Carlo simulations verify the accuracy of our analytical method. Numerical results provided in this paper allow system designers to clearly see not only the impacts of the power distribution factor and the self-interference cancellation capacity of the relay but also the influence of the strength of inter-user interference at the near user on the outage performances and ergodic capacities of both users.

【 授权许可】

Unknown