摘要
With the advantage of programmable electromagnetic properties,Reconfigurable Intelligent Surfaces(RISs)havedrawn wide attention from both industry and academia.RIS-assisted communication systems can promote hugewireless channel quality improvement and remarkable coverage enhancement.This paper proposes generalpathloss model,radiation pattern and mirror beam effect of 1-bit RIS at sub-6 GHz band.Field trails have beencarried out in outdoor and indoor deployment scenarios.The proposed model is validated through extensivesimulations and field-trial measurements.In addition,an optimized RIS phase-shit design process for the mirrorbeam elimination is proposed and validated with simulations.The proposed theoretical model and measurementresults can promote future research and application in RIS-assisted communications.
基金
supported in part by the Fundamental Research Funds for the Central Universities(2022JBZY018)
in part by the National Science Foundation of China(NSFC)for General Program under Grant 62171021
in part by the Project of China State Railway Group under Grant P2020G004,SY2021G001
in part by Basic Research Project of Jiangsu Province Frontier Leading Technology under Grant BK20212002.
