Communication technology, also known as communication engineering (also known as information engineering, telecommunications engineering, formerly known as long-distance communication engineering, weak current engineering), is an important branch of electronic engineering and a fundamental discipline. This discipline focuses on the principles and applications of information transmission and signal processing in the communication process. Communication engineering studies the transmission of information in the form of electromagnetic waves, sound waves, or light waves through electrical pulses from a transmitting end (source) to one or more receiving ends (sink). The ability of the receiving end to correctly identify information depends on the level of power loss during transmission. Signal processing is an important part of communication engineering, which includes filtering, encoding, and decoding. Professional courses include computer network fundamentals, circuit fundamentals, communication system principles, switching technology, wireless technology, computer communication networks, communication electronic circuits, digital electronic technology, fiber optic communication, etc.