Basics of Data Communication: Part 3
This article will explain, Data Transmission, configuration, Time Domain Concepts, Frequency Domain Concepts, Why Digital Communication, Bandwidth, Data Rate, Channel Capacity, Error Rate, Noise, Nyquist Sampling Rate, Shannon Channel Capacity, Line Coding, Modem and Digital Modulation etc. Data Transmission Data transmission occurs between transmission and receiver over some transmission medium. Successful transmission of data depends on two main factors, quality of signal being transmitted and characteristics of transmission medium. Data transmission always uses the form of electromagnetic waves and they are classified into guided electromagnetic waves and unguided electromagnetic waves. Examples of guided waves are twisted pair, coxial cable and optical fiber. Unguided waves means transmitting electromagnetic waves but they are not guided as example propagation through air, vacuum and seawater. Transmission Configurations and Terminology In general these are two types of tran