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Topic: Iterative Match Filterings
Replies: 33   Last Post: Apr 17, 2012 6:13 PM

 Messages: [ Previous | Next ]
 BretCahill@peoplepc.com Posts: 487 Registered: 6/24/08
Re: Iterative Match Filterings
Posted: Apr 6, 2012 5:11 PM

> >> >>>>>> Do you mean matched filtering or is "match" filtering something
> >> >>>>>> different?

>
> >> >>>>> North filter.
>
> >> >>>> Far more commonly known as a "matched filter",
>
> >> >>> How long did it take you to figure that out?
>
> >> >>>> which requires no
> >> >>>> special kind of convolution, only the ordinary, mundane kind. =A0The=

> >re's
> >> >>>> no deconvolution involved.
>
> >> >>> How is the original waveform recovered with a North Filter?
>
> >> >> Bret, can you stick with the common semantic? =A0before today, i have
> >> >> never heard of a "North filter".

>
> >> > Is anyone still whining about "match filter" or "matched filter", both
> >> > of which google up tens of thousands of on point hits in less time
> >> > than it takes to play trifling word games.

>
> >> >> i am assuming from Eric's response and
> >> >> yours, that it is synonymous with "matched filter".

>
> >> >> a matched filter is not about recovering an original waveform.
>
> >> >http://en.wikipedia.org/wiki/Matched_filter
>
> >> > Scroll down to the match filter recovery of the binary signal
>
>
> >In that example the "detection" of the signal requires recovering the
> >original waveform.

>
> You're calling it a waveform, other people may call it the modulated
> data,

And some may call it Shape XYZ.

. . .

> >> also, Wikipedia should not be taken as authoritative
>
> >You think an authoritative article is necessary for an _example_?
>
> >Maybe you think the author put that nonsense in because he wanted to
> >help out anyone trying to mislead on how match filtering can be used
> >for wave form recovery?

>
> Again, you miss the point by quite a long ways.

The communication problem is on _your_ end.

The link below shows another example of match filtering, not merely
detecting, but recovering the original waveform before the noise was

http://www.complextoreal.com/chapters/mft.pdf

It may help explain why you are having trouble with the term
"match[ed] filter."

Bret Cahill