Design and Implementation of Time-varying Fading Channel Simulator Based on FPGA

Channel simulator is widely used in the test of communication system. Its function is to simulate the propagation characteristics of path loss, shadow fading and multipath fading in real channel environment by using complex and precise channel model. Compared with the traditional real-time test in outfield environment, the real-time generation technology of channel parameters of time-varying fading channel simulator and the improvement of test method are used to realize the modeling and Simulation of high-speed mobile channels to meet the needs of dynamic test. It has become an increasingly important link in the development and testing of communication systems.