Answer to Question #87656 in Quantum Mechanics for Shivam Nishad

Question

Describe the 5 common sources of noise in communication system and explain the ways
to reduce each of them.

Answer 1

1. Atmospheric noise is a random noise caused by the lighting discharge in the thunderstorms and other naturally occurring electrical disturbances. These electrical impulses are random in nature. The ways to reduce: shielding the cable.

2. Man made noise is electric noise generated due to automobiles , ignition system, switching equipment, fluorescent light and other numerous heavy electrical machines. The ways to reduce: shielding the cable.

3. Thermal noise is generated due to thermal motion of electrons inside resistor. The ways to reduce: selection of appropriate resistors.

4. Transit time noise is generated due to the movement of charge carriers during the transit time. The ways to reduce: selection of appropriate equipment.

5. Shot noise is generated due to the random arrival of electron or holes at the output element of a device. The ways to reduce: selection of appropriate equipment.