Mathematical Modeling and Design of RIS Deployment in a RIS-Assisted Metal Cuboid for WAIC Systems  

作　　者：Hongchi Lin Qiyue Yu 

机构地区：[1]Communication Research Center,Harbin Institute of Technology,Harbin 150000,China

出　　处：《China Communications》2023年第4期86-101,共16页中国通信（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grand No.62071148 and No.62171151;partly by the Natural Science Foundation of Heilongjiang Province of China under Grand No.YQ2019F009;partly by the Fundamental Research Funds for Central Universities under Grand No.HIT.OCEF.2021012。

摘　　要：Wireless avionics intra-communications(WAIC)is an emergent research topic,since it can improve fuel efficiency and enhance aircraft safety significantly.However,there are numerous baffles in an aircraft,e.g.,seats and cabin bulkheads,resulting in serious blockage and even destroying wireless communications.Thus,this paper focuses on the reconfigurable intelligent surface(RIS)deployment issue of RIS-assisted WAIC systems,to solve the blockage problem caused by baffles.We first propose the mirror-symmetric imaging principle for mathematically analyzing electromagnetic(EM)wave propagation in a metal cuboid,which is a typical structure of WAIC systems.Based on the mirror-symmetric imaging principle,the mathematical channel model in a metal cuboid is deduced in detail.In addition,we develop an objective function of RIS's location and deduce the optimal RIS deployment location based on the geometric center optimization lemma.A two-dimensional gravity center search algorithm is then presented.Simulation results show that the designed RIS deployment can greatly increase the received power and efficiently solve the blockage problem in the aircraft.

关 键 词：wireless avionics intra-communications(WAIC) reconfigurable intelligent surface(RIS) channel modeling deployment optimization 

分 类 号：V243.1[航空宇航科学与技术—飞行器设计] O141.4[理学—数学]