You do not have direct control over most noise and interference sources. Remember: Noise is defined as “everything other than the desired signal.“ Therefore, noise includes all the following:
Natural noise— Atmospheric and galactic noise.
Manmade noise— Noise that is present in the radio-frequency (RF) environment and that is picked up by your antenna. This includes noise from microwave ovens, cordless telephones, and indoor wireless LANs.
Receiver noise— Noise generated inside the receiver circuitry.
Interference from other networks— Interference caused by other signals in the same band coming from other nearby wireless networks.
Interference from your network— Interference caused by signals coming ...