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Stationnarity

Started by thom April 28, 2006
Hi

I am currently studying noise reduction concerning broadband signals
reception (for example video signal which have been modulated). Some noise
reduction methods refer to stationarity of signals. Do you know if a
broadband signal such as a video signal can be considered as stationary?

Thanks
> I am currently studying noise reduction concerning broadband signals > reception (for example video signal which have been modulated). Some noise > reduction methods refer to stationarity of signals. Do you know if a > broadband signal such as a video signal can be considered as stationary
I don't know much about video signals, but it's highly unlikely that it is long term stationary. On a short term it might be stationary if the time window is small enough. So you have to ask yourself : Stationary in what sense? With respect to mean? variance? Or some other factor! Stationary on a long term basis? or short term basis?