摘要
提出一种支持物联网(IoT)应用的基于mmWave的无线异构系统中应用非正交多路访问(NOMA)的中继方案。该方案利用了低功率中继部署的特殊性,结合IoT设备的能量收集功能,推断中继协助下的用户性能表现。在中继或Io T设备的协助下,下行NOMA传输由两个阶段组成:(1)基站(BS)通过应用NOMA同时向用户设备(UE)和所选择的中继发送复合信号;(2)BS发送另一个消息给UE 1,同时向UE 2发送解码的消息。仿真结果表明,所设计的方案可行、有效。
This paper presents a non-orthogonal multiple access(NOMA)relay method which is based on mmWave wireless heterogeneous system and can support Internet of things(IoT)applications.The scheme takes advantage of the deployment specialty of low power relays,together with energy harvesting capabilities of IoT devices,so that it can infer the performance of UEs with relay collaboration.With the help of a relay or IoT device,the downstream NOMA transmission consists of two phases.(1)The base station(BS)transmits the composite signal to the user equipment(UE)and the selected relay device simultaneously by applying the NOMA.(2)The BS sends another signal to the UE 1 while the relay device transmits the signal to the UE 2.The simulation results show that the method designed in this paper is feasible and effective.
作者
邱欢
乔坤
Qiu Huan;Qiao Kun(School of Electronic Engineering,Xi′an Shiyou University,Xi′an 710065,China)
出处
《电子技术应用》
2018年第9期17-20,23,共5页
Application of Electronic Technique
