(This course is an optional elective course for graduate students majoring in communication and information systems and signal and information management. It is an extended course reflecting the development direction of contemporary communication technology. The educational content of this course implores students to have a foundation in communication principles, computer networks, and other prerequisite courses. The credits of this course are 2 credits, and the total class time of the program is about 34 class hours. Changes to some of the content can be appropriately increased or decreased based on the number of weeks of education in the semester.)