Optimization of Optical Fiber Network Communication Module for Mobile Communication Based on PWM Modulation

Abstract

This paper describes the principle, characteristics and design method of PWM transmission system. In this paper, a novel optical fiber multi-channel relay transmission system for mobile communication based on PWM is proposed. The system can eliminate the nonlinear and noise interference in the existing analog optical fiber relay transmission system, and the required transmission code rate is nearly 10 times lower than that of the general digital system. The cost of the simultaneous interpreting method is 70% lower than that of the analog repeater with the same distance. According to the spectrum analysis results of 48 channel signal transmission system, as long as the parameter selection is reasonable and corresponding measures are taken, the method can obtain high quality signal. The results of the experiment have a certain reference value for the optimization research of mobile communication optical fiber network communication module.