One goal in telecommunications is to increase the date rate while decreasing the signal rate.Increasing the data rate increases the speed of transmission, while Decreasing the signal rate decreases the bend width requirement. 

Data rate  defines the number of data elements while the signal rate is the number of signal elements.

A signal element is the shortest element of digital signal. Data elements are being carried while signal element are the carriers. Data elements are need to send. Data element is the behaviour of element.

Line coding is the process of converting binary data, a sequence of bits to a digital signal. For example data, text, numbers, graphical images, audio and video that are stored in computer memory are all sequences of bits.  Line coding converts a sequence of bits to a digital signal. Some line coding schemes leave a residual … Read more