What does zero-mean noise mean?

Zero mean so that the noise does not present a net disturbance to the system.

1. Why is mean of noise 0?
2. What is zero mean white noise?
3. What is zero mean Gaussian noise?
4. What is a zero mean signal?

Why is mean of noise 0?

Your answer is that a zero mean noise is that one for which E(X(t)) is zero for all t. However above is a theoretical description of Mean. In practice to compute mean and other theoretical parameters, you will refer to statistical computation which deal with practically observed data and computations based on that.

What is zero mean white noise?

White noise has zero mean, constant variance, and is uncorrelated in time. As its name suggests, white noise has a power spectrum which is uniformly spread across all allowable frequencies.

What is zero mean Gaussian noise?

Gaussian white noise (GWN) is a stationary and ergodic random process with zero mean that is defined by the following fundamental property: any two values of GWN are statis- tically independent now matter how close they are in time.

What is a zero mean signal?

A zero mean random signal is uniformly distributed between limits – a and + a and its mean square value is equal to its variance.