Just a reminder that the gr-dvbt project is now part of GNU Radio in the
gr-dtv component and the Digital Television category of
gnuradio-companion. The DVB-T receiver has some significant bug fixes
and enhancements over the baseline in gr-dvbt.
The C in COFDM stands for "coded". In the case of DVB-T, Viterbi and
Reed-Solomon FEC.
The impulse response of a channel is really a separate topic from DVB-T,
so I'll let others comment on that. A quick Google of "channel impulse
response" provides a starting point.
http://dsp.stackexchange.com/questions/536/what-is-meant-by-a-systems-impulse-response-and-frequency-response
Digital Television
Ron
On 10/02/2016 11:40 AM, Cinaed Simson wrote:
On 10/01/2016 04:46 PM, Juan Antonio wrote:
Hello, someone would know how to calculate the impulse response of a
COFDM, DVB-T channel with an SDR device?
Thank you in advance
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
An inverse DFT on a sinc function in the frequency domain yields a sine
function in the time domain. And a DFT on the sine function in the time
domain yields a sinc function in the frequency domain.
I presume the "C" in COFDM means to chop up the bandwidth into carriers
such that the sinc function in one channel hits nulls in the other
channels.
Piece of cake in theory.
There's a gr-dvbt project on github
https://github.com/BogdanDIA/gr-dvbt
I don't know anything about it - I don't even know if it works.
-- Cinaed
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
