摘要
Abstract
The dual-mode communication technology of High-speed Power Line Communication(HPLC)and High-speed Radio Fre-quency(HRF)is the key to constructing the"last mile"communication of the future smart grids.To address the challenges faced by the HRF wireless link,such as susceptibility to environmental interference,low Signal-to-Noise Ratio(SNR),and limited transmission range,this paper proposes the integration of a passive Reconfigurable Intelligent Surface(RIS)into the wireless component of an HPLC+HRF dual-mode communication system.By constructing a RIS-assisted HRF communication channel model,the dual improvement of SNR and transmission distance is realized.Simulation results show that by intelligently adjusting the phase shift of RIS units,electromag-netic beams can be effectively converged,and the SNR at the receiving end is significantly improved.Compared with the scenario without RIS,the introduction of RIS not only achieves a SNR gain of about 3～5 dB,but also the SNR increases linearly with the increase in the number of RIS reflection units.In addition,under different transmission distances,the RIS-assisted system can maintain a higher SNR,effectively delaying signal attenuation,thereby improving the effective communication distance of the HRF link.This study confirms the great potential of passive RIS in enhancing the reliability and coverage of dual-mode communication systems,and provides a new techni-cal path for building a more efficient and stable power Internet of Things.关键词
可重构智能表面/高速电力线载波/高速微功率无线/信噪比/电力物联网Key words
Reconfigurable intelligent surface/High-speed power line communication/High-speed radio frequency/Signal-to-noise ratio/Power internet of things分类
电子信息工程
