MCA SEM 2 transmission impairments
Attenuation is the opposite of amplification,
Attenuation is a term that refers to any reduction in the strength of a signal, when transmitting over a long distance. Attenuation occurs with any type of signal, whether digital or analog. It is also called loss of signals, The extent of attenuation is usually expressed in units called decibels (dBs).
Delay Distortion
Delay distortion is a guided transmission media phenomenon where network data signals are transmitted via a medium at a certain frequency and speed.
Delay distortion occurs when signal velocity and frequency vary. This means that all signals do not arrive at the same time, resulting in distortion of the signal. This term is commonly used in fiber optics.
noise
It is the unwanted energy that always comes with the signal and create noise