# Obtaining power distribution of faded signal

1. Apr 16, 2009

### JamesGoh

If I want to obtain the power distribution from an amplitude fading distribution (whether it is Ricean, Rayleigh or Nagakami fading), do I simply do the following ?

1. Find the mathematical relation between the power and amplitude (which in most cases is p=r^2 where p=signal power, r= signal envelope/amplitude)

2. Derive the expression for p, i.e. dp/dr = 2r

3. Make dp the subject, i.e. dp = 2rdr

4. Integrate the envelope pdf over dp, using dp=2rdr

regards
James

2. May 1, 2009

### jsgruszynski

First, fading is not a stationary signal. Lots of signal processing algorithms first presume you have stationary or at least cyclostationary signals. The latter can be used with antenna diversity (multiple antenna) to extract enough information.

3. May 2, 2009

### JamesGoh

my problem is resolved. it was actually a case of using the Jacobian and variable transformation