Open AccessSimulation Research on Transmission Performance of UAV Data Link in Multipath Channel
Author(s) -
Xilei Wu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/719/1/012048
Subject(s) - multipath propagation , computer science , data transmission , electronic engineering , multipath interference , transmission (telecommunications) , delay spread , additive white gaussian noise , fading , keying , link adaptation , data link , channel (broadcasting) , real time computing , telecommunications , engineering , computer network
Low elevation Angle is the common working environment of Unmanned Aerial Vehicle (UAV) data link. Naturally, data link transmission performance will be affected by White Gaussian Noise (WGN). Besides, multipath interference is more characteristic and usually more harmful. Taking Phase Shifting Keying (PSK) modulation system commonly used in data link as the object and typical UAV data link point-to-point configuration as the prototype, this paper analyzes the transmission principle of this system and the characteristics of multipath channel transmission, and then establishes the simulated transmission model of measurement and control communication link in multipath channel on this basis. Through simulation experiment, part of the simulation data and conclusions are given. According to the paper, increasing the link level redundancy design is not the fundamental measure to solve multipath fading. And the paper suggests that in order to improve the transmission performance of data link in multipath channel, it is feasible to add adaptive equalization technology at the level of signal processing.