Study Material
UNIT-I Introduction to Communication Major Contents: Introduction to communication system, What is meant by modulation, Need for modulation, Concept of frequency translation, Electromagnetic Spectrum, Frequency and wavelength in EM spectrum, Fundamental definitions of Gain, decibel and attenuation. INTRODUCTION TO COMMUNICATION SYSTEM: Communication means sending, receiving and processing of information between two or more devices. A collection of elements (devices) which works together to establish a communication between the sender and receiver is called a communication system. Some examples of communication system include radio broadcasting, television broadcasting, radio telegraphy, mobile communication, computer communication etc. Two or more people communicating with each other by using sound signals is also known as the communication system. Block Diagram of Communication system: The bas...