1. School of Physics and Electronic Information Engineering, Henan Polytechnic University, Jiaozuo, China
2. Middle Atmosphere and Global Environment Observation (LAGEO) Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
3. 5GIC & 6GIC, Institute for Communication Systems, University of Surrey, Guildford, U.K
4. State Key Laboratory of Media Convergence and Communication, Communication University of China, Beijing, China
5. School of Big Data and Software Engineering, Chongqing University, Chongqing, China
6. Department of Applied Informatics, Silesian University of Technology, Gliwice, Poland