Fast Variable Channel Simulation and Parameter Improvement Based on the Sum-of-Cisoids Model

Aiming at the problem of efficient and accurate simulation of fading channels in complex scenarios of wireless channels, this paper proposes an accurate Doppler expansion method based on the simulation method of Sum-of-Cisoids (SoC) to improve the calculation of model parameters, and applies it to common applications, such as classical 3dB, Jakes classic, flat spectrum and Gaussian spectrum. Complex fading channel with arbitrary Doppler power spectrum. The simulation results show that the statistical distribution of channel fading and Doppler power spectrum output from the parameter calculation method based on SOC are consistent with the theoretical values. This method can be applied to real and fast reproduction of the propagation characteristics of wireless fading channels indoors.