Non Gaussian noise in communication system

1. What is non-Gaussian noise?
2. What is Gaussian noise in communication?
3. Is noise Always Gaussian?
4. Why is Gaussian noise important?

What is non-Gaussian noise?

Gaussian noise arises from noise sources at statistical equilibrium (heat baths). Non-Gaussian noise arises from non-equilibrium noise sources. Lévy noise implies extreme events in amplitude that are absent from Gaussian noise and drastically change in behaviour. – Cyclone. Oct 17, 2021 at 8:12.

What is Gaussian noise in communication?

Gaussian noise, named after Carl Friedrich Gauss, is a term from signal processing theory denoting a kind of signal noise that has a probability density function (pdf) equal to that of the normal distribution (which is also known as the Gaussian distribution).

Is noise Always Gaussian?

Many real noise sources tend to look more or less Gaussian-ish. But Gaussian noise has a very strict mathematical definition. Real-world things, such as noise from wind and other sources, don't cause mathematical models.

Why is Gaussian noise important?

A first advantage of Gaussian noise is that the distribution itself behaves nicely. It's called the normal distribution for a reason: it has convenient properties, and is very widely used in natural and social sciences. People often use it to model random variables whose actual distribution is unknown.