Research Of Communications System Simulation Based On MATLAB

The development of modern society requires communications system has more powerful function, higher performance and complicated structure. On the other hand, the research of technology and development of product should truncate cycle, cut costs and increase production levels. We can resolve the conflict by using the computer aided design technology and tools. The rapid development of computer science causes the successful research and development of new generation visual simulation software. The simulation software is powerful which makes the process of design and analysis of communications system simulation more intuitional and convenient. Today, the communications system simulation is rapid developing.The simulation not only permeates the whole process of the design of communications system project but also has very important function during the development of communications system. Communications system simulation has comprehensive adaptability and wonderful agility, which is helpful for us to research the function of communications system well.The paper firstly introduces the basic content of communications system simulation, which include common steps of simulation, visual simulation tool called Simulink and the concept of S-function.It is necessary to research the theory of communications system intensively. The paper expands some important links of the communications system which include channel, noise, digital transmission of analog signal, channel encode and signal modulation.Theory aims to guide practice. On the base of deep comprehension of communications system theory, the paper designs many concrete simulation models. In the process of models design, the paper analyses the intention, configuration, simulation links and simulation results.In the end, the paper summarizes main content of the research and some following study and research objects are suggested.