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Re: [Discuss-gnuradio] signals/atsc question

From: Marcus Leech
Subject: Re: [Discuss-gnuradio] signals/atsc question
Date: Wed, 02 Mar 2005 16:10:18 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624 Netscape/7.1

So, for a theoretical USB bandwidth of 32Mbyte/sec, that's
 128Msamples/sec coming from the A/D :-)

Eric Blossom wrote:

On Wed, Mar 02, 2005 at 09:59:34AM -0500, Marcus Leech wrote:
Sample-size reduction, in order to increase effective bandwidth up to the
computer, would be of great benefit for radio astronomy work.  The
big observatories that are sampling many hundreds of Mhz at a time
typically use digitizers with a couple of bits of resolution. They can get
away with this because they're using dedicated r.a. bands, and fairly
good filters (and remote locations!).

If you have 4 samples per byte, your observable bandwidth improves
quite a bit :-)

This wouldn't be too hard to implement.  It just changes to code that
packs that data for transport across the USB.


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