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Re: [Discuss-gnuradio] Re: ATSC decoding - Now Working!

From: Achilleas Anastasopoulos
Subject: Re: [Discuss-gnuradio] Re: ATSC decoding - Now Working!
Date: Thu, 4 Nov 2010 00:30:51 -0400

Nick and others,

I have decoded a capture of ATSC that Nick provided (many thanks).
Here are some numbers for double-checking:

1) the original file was 730MB which for 8 complex Msps corresponds to
~ 11 secs of transmission

2) at the output of the equalizer (stream 0) there are 491MB of data produced
(reasonable, since it corresponds to 11 sec x 10.76 Msymbols /sec x 4
Bytes /symbol )

3) the output of the field_sync_demux (pipe_5) is ~455MB which i don't
know what it corresponds to
since i do not know the  "atsc_soft_data_segment" data structure
details (btw, where is it defined?)

At this point i don't know if i am getting what i am supposed to get.
For one thing, the equalizer output (stream 0) does not look like a
nice 8-PAM signal............
Also, i don't know how to view the mpeg stream; VLC does not like it...


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