Simulation Of Remote Wireless Channel Multi-path Effects

The channel is a general designation of medium between the sending set and the reception set, it is an indispensable part for communications system. It is of great significance for theory research and engineering applications to model the wireless channel of mobile communication system.This paper is combined with project"Research and Simulation of Wireless Channel for Spacecraft Communication", which is cooperated with an institute. The aim is modeling and simulating the wireless channel for spacecraft communication to assess the performance of the types of the wireless channel. In this paper, the wastage of signal on launch field is calculated and simulated. The simulations contain two parts: simulation of the wastage of signal under spacecraft at rest and simulation of spacecraft blastoff. For stillness model, the model of freeness space radiation and the Okumura are given. For the Okumura, the different environment and topography correction factor is added, which makes the results more accurate without practice test but on the basis of theoretical analysis. For spacecraft blastoff, considering the launch of the first 20 seconds of time, the waste of receiving signals on the receiver is discussed. On this basis, also joined the flames impact of the corresponding calculation. Finally, the related performance simulation graphics are provided, and the simulation results are statistically analyzed.