In order to improve the reliability and transmission speed of the communication system, increase the transmission distance, reduce the BER of the system and achieve the purpose of localization, the innovative design of dual redundancy and CRC combined algorithm and the use of domestic devices, including domestic FPGA, to complete a set of high reliability high-speed communication system of the fully localized system design. After a variety of complex scenarios and tests, the transmission speed was increased from 0.4 Gbit/s to 1.25 Gbit/s, the single channel transmission was upgraded to dual channel redundancy transmission to improve the system reliability, the transmission distance was increased from 40 m to 100 m, and the BER was reduced to 0. The system achieves high reliability, high speed, long distance, zero BER and localization in a complex environment. The purpose is to maintain high reliability, high speed, long distance, zero BER and localization in complex environment. It has been applied in a project.