Research on Digital Simulation of Blind Equalization in Multipath Ground-to-Air Communication Channel

Abstract

In ground-to-air communication, the inter-symbol interference caused by multipath effect is often the important cause of poor communication quality. Channel equalization technology can effectively solve the problem of inter-symbol interference in ground-to-air communication. Firstly, we theoretically analysed the multipath transmission channel of ground-to-air communication and did the simulation modeling work. Then, we selectively analysed the model structure, the principle of the process and the adopted key equalization algorithm. Based on the technology system and working parameters commonly used in ground-to-air communication, we simulated equalizing reception processing performance of the communication model in multipath channel and gave some simulation data. Experimental results showed that DD-LMS adaptive equalization technology can significantly improve the reception performance of the communication system in the ground-to-air communication system which is affected by multipath interference and it provides valuable reference for the evaluation of the multipath transmission performance of the ground-to-air communication system.