Abstract: A fast simulation platform of mobile fading channel is designed by using GUI tool in Matlab to help people better understand the fading characteristics of mobile channel. The platform can manually select channel types and input channel parameters, and realize the simulation of Rayleigh fading, Rice fading and Nakagami fading channels with different synchronization length and fading coefficients.The effects of flat attenuation and frequency selective fading characteristics on signal transmission are analyzed through the simulation of constellation diagram and power spectral density by the case study of QPSK, 16QAM and 64QAM. The practice shows that the platform is simple in operation, flexible in parameter setting, intuitive and good in visualization, which lays a theoretical foundation for communication system analysis.

Key words: Matlab GUI, mobile channel, fading characteristic, simulation, constellation Diagram