using eye diagram to model output waveform
Started by 7 years ago●3 replies●latest reply 7 years ago●115 viewsThank you
Yes I have the time domain data
I forgot to ask if you have the original data stream.
I'm assuming that your channel acts like
\[r = h\left(s\right) + n\]
where \(s\) is the transmitted signal, \(r\) is the received signal, \(h\) is a linear time invariant system, and \(n\) is white noise (this may work if \(n\) is colored noise, but I'd have to, like, think about that answer).
If you do have the original data stream, and if the SNR is high enough, then you should be able to use an ARMAX algorithm to come up with a model of the channel distortion (\(h\)), and then once you have that, come up with an estimate of \(n\) by subtracting a distorted but noise-free version of the signal from \(r\).
If you don't have the original data stream, but if you can reconstruct it somehow, then you can do the same thing -- but doing this sort of thing blind is harder.
I don't know if this is the usual way to do this -- if it isn't, hopefully someone will pipe up with something useful.