April 2016
Intermediate to advanced
506 pages
15h 9m
English
As previously described, one of the most important advantages of digital transmission relies on the ability to perform regeneration, although at the cost of a higher signal bandwidth, as compared to analog signals. Regeneration of signals allows partially removing the effects of channel impairments, such as noise, interference, attenuation, or distortion.
Chapter 1 stated that, depending on whether signals are transmitted in analog or in digital form and assuming that the source data is digital, such signals require passing through a process of modulation* or line coding,† respectively (see Figure 6.1). This is performed using a specific modulation scheme or digital coding that aims to optimize and ...