There are three types of transmission impairments: attenuation, delay distortion, and noise. Attenuation: The impairment is caused by the strength of signals that degrades with distance over a transmission link. ... The received signal should have sufficient strength to be intelligently interpreted by a receiver.


Multiplexing is the technology that is able to combine multiple communication signals together in order for them to traverse an otherwise single signal communication medium simultaneously. Multiplexing can be applied to both analog and digital signals.

свернуть