GNURadio based ETSI DVB-T Transmitter works. Thanks to everybody for precious help!

GNU Radio
1

Hi everybody,
I would like to say thanks to Eric, Firas, Matt, Achilleas and to the
other
guys from the list from which I received an incredibly precious help.
My draft ETSI DVB-T transmitter works fine… (It’s gonna be the subject
of
my final thesis here @ Pisa University) the code is not yet clean, and
I’m
still far from real-time, but the signal is pretty good… and carries
its
11.612 Mbps flawlessly.

The work I still have to do is improving the code, and making it more
efficient, then, if this project might be of some relevance to the
community, I’ll start a proper procedure for contributing it to
gnuradio.

there are two videos showing how things go so far @
http://wwvince.interfree.it/11.3Mbps
http://wwvince.interfree.it/video2
they’re h264, VLC is fine with them

I still got one problem, the mpeg ts I’m using as the input to my system
is
a dump from a commercial transmission on the air here in italy, and it
is
meant for a 24Mbps channel, so RX buffer tipically has underruns as my
channel only carries 11.612.
Does anybody know of any open source DVB multiplexer (capable of
writing
also the NIT) that I could use to set up a mux at the right bitrate?

best regards

2

Vincenzo P. wrote:

efficient, then, if this project might be of some relevance to the
community, I’ll start a proper procedure for contributing it to gnuradio.
Yes please start this procedure.
Even if you do not have time to clean-up or improve the code it could be
very usefull for the community if you made it available somewhere on the
internet.

Does anybody know of any open source DVB multiplexer (capable of
writing also the NIT) that I could use to set up a mux at the right bitrate?

http://linuxtv.org/projects.php
MPEG2 multiplexer

An ISO-13818 compliant multiplexer for generating MPEG2 transport and
program streams, developed and maintained by Oskar Schirmer. The TS
multiplexer is able to run continously, with dynamically adjustable
input streams for live broadcast.
Visit the MPEG2 multiplexer project page at:
http://www.scara.com/~schirmer/o/mplex13818/

Greetings,

Martin Dudok van Heel

3

Dear all

Can you please share me the DVB-T transmitter open source code?

Ramesh.