Analysis and Simulation of Digital Baseband Transmission System Basing on SIMULINK

摘要

Based on the analysis of digital baseband system transmission characteristics, SIMULINK software is used to simulate the digital baseband transmission system. Having been fully considered the possible factors affecting the baseband signal in the transmission process, a basic model of digital baseband transmission system is established, a system model which can simulate and realize the function of digital baseband signal transmission. The influence of channel noise on system performance is analyzed by eye diagram and bit error rate. It shows that the larger the channel SNR is, the smaller the bit error rate is, and the better the transmission quality is, which is consistent with the theoretical analysis. From the simulation results and bit error rate, the digital baseband transmission system model meets the basic design requirements.