Research On Communication Mode Of Transmission Line Online Monitoring System

Nowadays,the amount of information monitored by transmission lines is increasing,and the requirements for communication systems will be higher.Wireless private networks have the advantages of small delay and high efficiency,and are widely used in transmission line monitoring systems.However,the channel environment of the wireless private network is complicated and easy to be interfered by noise,which is likely to cause problems such as low accuracy of the return of monitoring information or failure of the return.Therefore,in order to reduce the information transmission error rate of the transmission line online monitoring system and improve the communication error control capability of the wireless private network,it is of important practical value to study communication technologies and solutions sui Tablele for transmission line information transmission.This paper aims at the problem that the information return of the wireless private network of the transmission line is susceptible to interference and has a high bit error rate.Based on the signal modulation method and channel coding theory,using the LDPC channel coding method,a new type of OFDM wireless power private network is constructed,which can improve Signal anti-interference ability and coding error control ability.Through simulation and actual testing,it is concluded that the LDPC-OFDM wireless communication system under the two typical channels of Gaussian and Rayleigh fading has higher reliability than other encoding methods of OFDM systems,and can effectively solve the current online monitoring of transmission lines.The communication quality problems that are susceptible to interference and high bit error rate exist in the system information return.First,the paper introduces the theory of wireless private network communication,analyzes the anti-interference performance of the OFDM wireless private network system,and points out that the existing wireless private network channels are vulnerable to interference and high transmission error rates due to unsatisfactory environments;secondly,LDPC is used The coding method constructs an OFDM wireless private network communication system,and performs simulation analysis and verification for LDPC-OFDM systems and other OFDM systems using other coding methods in Gaussian and Rayleigh fading channel environments;finally,introduces the design of LDPC-OFDM The program and the effect of applying the system to actual projects.The test results show that the wireless private network based on LDPC-OFDM has a lower bit error rate and stronger anti-interference performance compared to other coding communication systems.Compared with the OFDM system of convolutional coding and Tubro coding,the OFDM system using LDPC coding can effectively reduce the transmission error rate of the system,and at the same time,it can also improve the system capacity to a certain extent.The wireless private network communication scheme proposed in this study provides a certain technical foundation for the future transmission line information transmission.