Ergodic Capacity and Outage Performance Analysis of Uplink Full-Duplex Cooperative NOMA System

被引：23
作者：
Xie, Xianbin [1 ]
Liu, Jinhua [2 ]
Huang, Jiawen [2 ]
Zhao, Shiwei [3 ]
机构：
[1] Guizhou Inst Technol, Dept Big Data Engn, Guiyang 550003, Peoples R China
[2] Shangrao Normal Univ, Dept Math & Comp Sci, Shangrao 334001, Peoples R China
[3] Chongqing Univ Posts & Telecommun, Dept Optoelect Engn, Chongqing 400065, Peoples R China
来源：
IEEE ACCESS | 2020年 / 8卷
关键词：
Relays; NOMA; Uplink; Base stations; Interference cancellation; Receiving antennas; ergodic sum rate; full-duplex; outage probability; successive interference cancellation; self-interference cancellation; NONORTHOGONAL MULTIPLE-ACCESS; COORDINATED DIRECT; CHALLENGES;
D O I：
10.1109/ACCESS.2020.3022279
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We propose an uplink full-duplex (FD) cooperative non-orthogonal multiple access (NOMA) system, where a dedicated Full-duplex (FD) relay is used to help two uplink users transmitting information to the base station. A novel FD relay transmission mode is proposed, in which the FD relay utilizes successive interference cancellation (SIC) and self-interference cancellation to decode two users symbols at the relay receiving antenna, and the relay transmitting antenna transmits superimposed signal to the base station using superposition coding. In this paper, we also consider a more realistic scenario where self-interference cancellation is imperfect. Hence, the residual-self interference exists. Moreover, the ergodic sum rate and the outage probability of the proposed system are investigated and the accurate analytical expressions are derived. Simulation results validate that, compared with the uplink half-duplex (HD) cooperative NOMA system and the uplink HD cooperative orthogonal multiple access (OMA) system, our proposed system obtains better performance of the ergodic sum rate and outage probability in the main signal to noise ratio (SNR) regime.
引用
收藏
页码：164786 / 164794
页数：9
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