hi,
how to find snr of a signal which is corrupted by noise.only corrupted signal is available.noise and original signals are not available individually
You can use the info that noise is a RV that has a zero mean and is Wide Sense Stationary.
So, I think, when you can transmit the same signal X many times and monitor the o/p Y's.
The average of Y's is a good estimation of X, assuming you transmitted X infinity times.
You should transmit the "Same" X many times.
You receive different Y's.
The Y's average is the X you are transmitting in case you transmitting so many times.
Added after 1 minutes:
As you see, you don't have to know X, but this X should be transmitted many times.