Multimedia courseware as a modern multi-media education an important carrier, and its wealth of expression, good interaction and sharing great, and will certainly in our future life and learning to play a greater role; At the same time, in the next the information society, information society, as the support of technology, mobile communication technology will have greater development, so this course made multimedia courseware to improve the performance of the teaching media and interactivity, to promote classroom teaching content, teaching methods, teaching a comprehensive optimization process to improve the effectiveness of the teaching is very necessary and useful. In this paper materials, mainly the "Mobile Communications" in Chapter II which caused part of the contents of multimedia courseware, including the total number of frequency modulation, digital phase modulation, quadrature amplitude modulation, spread spectrum modulation and multi-carrier modulation these types of modulation techniques, courseware described in detail in several of the basic principles of modulation, as well as implementation