重庆邮电大学学报（自然科学版）2025，Vol.37Issue(2)：215-221,7.DOI:10.3979/j.issn.1673-825X.202401160013
基于NOMA的环境反向散射通信系统性能分析
Performance analysis of NOMA based ambient backscatter communication system
摘要
Abstract
In this paper,we investigate the outage performance of ambient backscatter communication systems based on non-orthogonal multiple access.Firstly,a practical nonlinear energy harvesting model is introduced based on the considera-tion of the energy causality constraint problem of the reflecting device.Secondly,optimal dynamic reflection coefficients are employed to minimize the outage probability of the reflective link.Exact and asymptotic expressions for the outage probabili-ty of the reflective device and the two users,as well as the diversity order,are derived.Finally,the effects of different sys-tem parameters on the system outage probability are analyzed.The correctness of the theoretical analysis is verified by Monte Carlo simulation,and the simulation results show that the reflection device energy causality constraint has an important im-pact on the performance of the system,and the outage performance of the ambient backscatter communication system based on non-orthogonal multiple access is better than that of the ambient backscatter communication system based on orthogonal multiple access.关键词
环境反向散射/非正交多址接入/能量收集/中断概率Key words
ambient backscatter communication/non-orthogonal multiple access/energy harvesting/outage probability分类
信息技术与安全科学引用本文复制引用
张万权,李锦屏..基于NOMA的环境反向散射通信系统性能分析[J].重庆邮电大学学报（自然科学版）,2025,37(2):215-221,7.基金项目
甘肃省科技计划项目(23JRRA892,22JR5RA361,23JRRA894) Gansu Provincial Science and Technology Program(23JRRA892,22JR5RA361,23JRRA894) （23JRRA892,22JR5RA361,23JRRA894）
