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Re: Iterative Match Filterings
Posted:
Apr 6, 2012 3:57 PM
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On Fri, 6 Apr 2012 12:03:28 -0700 (PDT), Bret Cahill
<BretCahill@peoplepc.com> wrote:
>> >>>>>> 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
>>
>> it's about detection.
>
>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, which can be from a symbol alphabet other than binary.
You need to be clear what you mean if you want to be understood.
>> if you think that example is about producing a
>> signal, rather than determining if a 0 or 1 had been transmitted, then
>> you're mistaken.
>
>You think any convolution of a square wave form with its kernel could
>look like _that_?
>> 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.
Eric Jacobsen
Anchor Hill Communications
www.anchorhill.com
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