This compact and student-friendly textbook offers a comprehensive introduction to several topics of communication systems, imparting a thorough grounding in the fundamental concepts of modulation and demodulation, radio transmitters and receivers, telephone communication systems, radar, television, network management in data communication, digital communication and some advanced communication systems such as cellular radio, satellite networking, and so on. It explains the basic theory of operation and applications. The main objective is to provide the students with a clear understanding of the principles of communication systems, aided by several diagrams and solved numerical problems. Distinguishing features: • A number of solved examples that illustrate the application of theory to reinforce the concepts • Concepts are explained with block diagrams that highlight the most significant points for better understanding • The book is primarily addressed to the needs of the undergraduate students of electrical and electronics, electronics and communication systems, and telecommunication engineering.