How do you calculate the power of white noise?

To calculate the power of white noise, you can use the formula for power, which is the mean of the squared values of the signal. For a white noise signal represented as ( x(t) ), the power ( P ) can be calculated using ( P = \frac{1}{T} \int_0^T x^2(t) dt ), where ( T ) is the duration of the observation. Since white noise has a constant power spectral density, its power is generally equal to the variance of the noise signal. In discrete terms, if you have a sample of white noise, the power can be approximated as the average of the squared samples.