[hfsig] Performance of 24/192 soundcards? USB Soundcards

[Robert McGwier]

EM == KALMAN when system and observation are linear.

-----Original Message-----
From: hfsig-bounces at lists.tapr.org
[mailto:hfsig-bounces at lists.tapr.org]On Behalf Of Robert McGwier
Sent: Thursday, September 23, 2004 2:13 AM
To: TAPR HF Modes SIG Mailing List
Subject: RE: [hfsig] Performance of 24/192 soundcards? USB Soundcards


The AEA DSP2232 demodulator worked as well as it did on UO-14
and other NO DC transmitters because it had a fractionally spaced
linear filter followed by a one tap per symbols DFE.  However,
be advised that this is the higher dimensional equivalent of
"dividing by 0".

There are better approaches


"Viterbi equalizer"

or

EM algorithm.

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