Design of Airborne Weapon RF Signal Transmission System Based on WDM-RoF

Aiming at the problems of large loss of RF coaxial cable used in traditional RF communication of airborne weapons, large frequency bandwidth of RF signal sent inside weapons, and limited allocation of resources inside weapons, a four-channel WDM optical RF signal transmission system based on carrier suppression modulation is designed by combining optical RF technology in microwave photonics and wavelength division multiplexing technology. Firstly, the transmission link of the 2-fold frequency RF signal normally generated by carrier suppression modulation is simulated. Then NRZ code is used to simulate the digital signal and load the signal generation rate at 10 Gbit/s to the optical carrier that modulates different frequency RF signals for transmission. After recovery by the photodetector, the bit error rate of the system is measured to determine the communication quality. Analyze the signal transmission of RoF system. Finally, a four-channel optical radio frequency transmission system is designed. The feasibility of the system is verified by identifying the signal-to-noise ratio of different radio frequency signals transmitted by each channel at the signal transmission rate of 10 Gbit/s and the bit error rate of modulated digital signals.