HDTV Receiver and additional hardware

I want to build a SDR that can capture an HDTV (non-real time) and then
transmits. I have a USRP and the Rx daughterboards. Are there any up
to date HowTo’s on Building a HDTV Rx using USRP.?

Do I have to buy any additional hardware, I am not cash rich.

Regards,

Antwong Berkley

On Fri, 2006-11-03 at 11:25 -0500, Berkley, Antwong L. wrote:

Regards,
Antwong - You will need the TVRx daughterboard, and be able to
compile gnuradio-0.9. To retransmit you might be able to use
an RFX400 daughterboard, but i have not verified that.

I have some scripts that will interface a usrp/tvrx to the old
gnuradio atsc_rx. There are several strategies to use. There’s
no up-to-date HOWTO that I know of but I’d be happy to help
on the email list.

–Chuck

Chuck,

Thank you for the offer, I would like the help. I want to explain what
I am trying to do. I am currently enrolled in a Software Defined Radios
course at Virginia Tech. For my semester project I want to demonstrate
the flexibility of SDR. I want to receive a HDTV or alternate frequency
and transmit it on 802.11 using the USR

In order to do my project I plan to use gnuradio and ossie(Virginia Tech
middleware). I want to make some the gnuradio modules or functions
compatible with ossie.

Here are few questions: I have compiled the latest version of gnuradio
but not a legacy version. Are the the old atsc_rx scripts not
compatible with the latest version of gunradio?

Can I view some of your scripts?

Regards,

Antwong

On Mon, Nov 06, 2006 at 11:43:54AM -0500, Berkley, Antwong L. wrote:

Chuck,

Thank you for the offer, I would like the help. I want to explain
what I am trying to do. I am currently enrolled in a Software
Defined Radios course at Virginia Tech. For my semester project I
want to demonstrate the flexibility of SDR. I want to receive a
HDTV or alternate frequency and transmit it on 802.11 using the USR

The HDTV receiver is far from real time. I suggest starting with a
less computationally demanding waveform.

In order to do my project I plan to use gnuradio and ossie (Virginia
Tech middleware). I want to make some the gnuradio modules or
functions compatible with ossie.

That sounds interesting.

Here are few questions: I have compiled the latest version of
gnuradio but not a legacy version. Are the the old atsc_rx scripts
not compatible with the latest version of gunradio?

Can I view some of your scripts?

Regards,
Antwong

Chuck,

Can you please remind me where the ATSC Rx porting effort got stuck?
What’s the immediate problem that needs to be solved?

Eric

Chuck,

I am not really concerned about a real tine signal. I just want to
capture the signal on one frequency and transmit on a different
frequency. Capturing an image is enough and a follow-on would include
the capture a real time signal.

Antwong

On Mon, 2006-11-06 at 09:34 -0800, Eric B. wrote:

Chuck,

Can you please remind me where the ATSC Rx porting effort got stuck?
What’s the immediate problem that needs to be solved?

Everything from antenna to the “bit timing loop” can be done in
2.x, including fpll. The bit timing loop, field sync checker,
equalizer and demultiplexor do not work in 2.x, altho a vain attempt
at porting has been checked in. Those “compile and run” but are broken.
The “grind on the data” modules that don’t really have anything
to do with signal processing are all ported to 2.x: de/randomizer,
rs-de/encoder, de/interleaver and trellis/viterbi all qa test and
work great.

On the transmit side, field sync mux, symbol mapper and weaver
modulator head/tail are not ported.

So the immediate issue is getting bit-timing-loop finished, or
starting over on it correctly.

–Chuck

On Mon, Nov 06, 2006 at 03:14:44PM -0500, Chuck Swiger wrote:

The “grind on the data” modules that don’t really have anything
–Chuck
Thanks!

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