Anti-Noise Coding Research for Next-Generation Nuclear Power DCS Communication System

In the process of introducing wireless signals in the rupgrading of wireless circuits in nuclear power plants or the design of the next generation distributed control system (DCS), it is necessary to improve the quality of wireless communication through error-correcting codes. This paper investigates the communication performance of encoded wireless signals in the vicinity of nuclear power plant instrumentation and control devices. Firstly, the problems faced by wireless communication signals in nuclear power plant are expounded. Secondly, the communication channel model around instrument and control devices is established, and the performance of low-density parity-check code (LDPC) coding in 5G enhanced mobile bandwidth (5GeMMB) scenario is analyzed by Monte Carlo simulation. Finally, the simulation analysis results are further verified through equipment development and field experiments. The research results show that the applicability of LDPC coding in DCS wireless communication environment in 5GeMMB scenario is insufficient, and the communication design needs to be further improved to enhance the availability of wireless communication in instrument and control devices of nuclear power plant. This study can provide some design reference for introducing wireless signals into the production system of nuclear power plants.