智能超表面性能仿真与测试

Reconfigurable Intelligent Surface Performance Simulation and Test

作为6G的潜在关键技术之一,智能超表面(Reconfigurable Intelligent Surface,RIS)通过改变电磁波的电磁特性,可以智能地重构无线传播环境。对RIS辅助通信系统在不同场景和系统参数配置条件下的性能进行了数值仿真、系统级仿真和外场测试。仿真和测试结果表明,RIS不但可以扩大用户覆盖范围,提升盲区的服务质量,而且可以在不造成额外干扰的同时,通过波束赋型提升信号强度,有效地提升边缘用户的速率。此外,由仿真结果可知,RIS部署在用户或基站附近,能提供最高的覆盖增益,为后续RIS部署策略提供有益思路。

As one of the potential key technologies of 6G,Reconfigurable Intelligent Surface(RIS)can intelligently reconstruct wireless propagation environment by changing the electromagnetic characteristics of electromagnetic waves.In this paper,numerical sim⁃ulation,system⁃level simulation and field tests are carried out on the performance of RIS⁃assisted communication system under different scenarios and system parameter configurations.Simulation and test results show that RIS can not only expand user coverage and improve the quality of service in blind areas,but also enhance signal strength by beamforming without causing additional interference,which can effectively improve the rate of edge users.In addition,it can be seen from the simulation results that RIS deployment near users or base stations can provide the highest coverage gain,which can provide useful ideas for subsequent RIS deployment strategies.