Beamforming Design for IRS-and-UAV-Aided Two-Way Amplify-and-Forward Relay Networks in Maritime IoT  

作　　者：Wang Xuehui Shu Feng Wu Yuanyuan Shi Weiping Yan Shihao Zhao Yifan Cheng Qiankun Sun Zhongwen Wang Jiangzhou 

机构地区：[1]School of Information and Communication Engineering,Hainan University,Haikou 570228,China [2]Collaborative Innovation Center of Information Technology,Hainan University,Haikou 570228,China [3]School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China [4]School of Network and Communication,Nanjing Vocational College of Information Technology,Nanjing 210023,China [5]School of Science and Security Research Institute,Edith Cowan University,Perth,WA 6027,Australia [6]School of Engineering,University of Kent,Canterbury CT27NT,U.K

出　　处：《China Communications》2024年第8期45-61,共17页中国通信（英文版）

基　　金：supported in part by the National Natural Science Foundation of China (Nos.U22A2002, and 62071234);the Hainan Province Science and Technology Special Fund (ZDKJ2021022);the Scientific Research Fund Project of Hainan University under Grant KYQD(ZR)-21008;the Collaborative Innovation Center of Information Technology, Hainan University (XTCX2022XXC07)

摘　　要：In this paper,an intelligent reflecting surface(IRS)-and-unmanned aerial vehicle(UAV)-assisted two-way amplify-and-forward(AF)relay network in maritime Internet of Things(IoT)is proposed,where ship1(S1)and ship2(S2)can be viewed as data collecting centers.To enhance the message exchange rate between S1 and S2,a problem of maximizing minimum rate is cast,where the variables,namely AF relay beamforming matrix and IRS phase shifts of two time slots,need to be optimized.To achieve a maximum rate,a low-complexity alternately iterative(AI)scheme based on zero forcing and successive convex approximation(LC-ZF-SCA)algorithm is presented.To obtain a significant rate enhancement,a high-performance AI method based on one step,semidefinite programming and penalty SCA(ONSSDP-PSCA)is proposed.Simulation results show that by the proposed LC-ZF-SCA and ONS-SDP-PSCA methods,the rate of the IRS-and-UAV-assisted AF relay network surpass those of with random phase and only AF relay networks.Moreover,ONS-SDP-PSCA perform better than LC-ZF-SCA in aspect of rate.

关 键 词：BEAMFORMING maritime Internet of Things phase shift rate performance two-way amplify-and-forward relay unmanned aerial vehicle 

分 类 号：TN929.5[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程] U675.7[自动化与计算机技术—计算机应用技术] P756.6[自动化与计算机技术—计算机科学与技术]