“Principles of Telecommunications Transmission” is an important course in the field of communication, but its theoretical nature is strong and the computational content is complex, making it difficult to meet the requirements of the new engineering construction using traditional theoretical teaching methods. To solve this problem, MATLAB software can be introduced into theoretical teaching as an auxiliary tool for theoretical deduction and calculation. When teaching the quality analysis of satellite communication transmission signals, using MATLAB to build a simulation analysis platform can effectively promote students understanding and application of theoretical content, stimulate learning enthusiasm, improve classroom teaching quality.