Anti-interference Analysis Of 4G Communication In Metro Civil Communication System

With its comfort,convenience and economy,the subway has gradually become the main mode of transportation for the public.People spend more and more time on the subway.Entertainment such as watching videos,tweeting and microblogging has become the best entertainment on the subway.This poses a huge challenge to the network of mobile phones.At present,4G communication has become the best technical solution,which can better meet the needs of network speed.However,how to introduce 4G signal into the subway will be a difficult problem.Because there are many wireless communication systems in the subway,the spectrum span of the communication system is large,and there are many electromagnetic interference between them.Only by systematically analyzing and demonstrating the electromagnetic interference between the railway wireless communication systems and putting forward the solution of the interference can the 4G signal be introduced into the subway.This paper mainly introduces the wireless civil communication systems introduced by operators.Firstly,the status quo of wireless communication systems and wireless signal environment in subway is analyzed,including the frequency and space status of the existing network.Secondly,the interference inside the wireless system and the interference between wireless systems are analyzed emphatically.On this basis,the anti-interference technical scheme and the measures adopted in the project are put forward.Finally,the correctness and rationality of the scheme are verified by testing,which provides guidance for future project implementation.