Good morning,
I'm using the USRP X310 for RFNoC Development. I'm trying to build the images
for the FIR filter block and the Window block with rfnocmodtool. Once all the
files are generated, I build the images and in the Write Bitstream phase I get
the error:
ERROR: [Builder 0-0] The design di
Hi everyone,
I'd like to teach students about OFDM modulation and I'd like to use
Gnuradio for the purpose. I'm trying to create a baseband signal with the
dvbt_tx_8k.grc project and decode it with the dvbt_rx_8k.grc project. The
problem is that the rx project cannot decode the baseband signal cre
You just have to match the parameters between the transmit and
receive flow graphs. The only difference is that the transmitter
is using 64QAM and the receiver is using 16QAM.
So you can either change the transmitter to 16QAM or change the
receiver to 64QAM.
You
Hi Ron,
Thank you for the advice, it's working now! I'll start to construct the
loopback version.
Cheers,
Tibor
Herman Tibor
Ron Economos ezt írta (időpont: 2022. febr. 10., Cs,
12:27):
> You just have to match the parameters between the transmit and receive
> flow graphs. The only difference
Dear Ron,
I have one more question that I hope you can help me with.
Here in Hungary the DVB-T broadcast uses Reed-Solomon coding with 188/204
rate. The convolutional coder rate is 3/4. How do I set up the Viterbi
decoder, the Convolutional Deinterleaver and the R-S decoder to match these
values?
You have to set the Code rate in the Demod Reference Signals block and
the Viterbi decoder block. The Reed-Solomon block is already setup for
188/204, so no changes required there.
It looks like Hungary uses 1/4 guard interval, so you need to set the
Cyclic Prefix Length in the OFDM Symbol Acq
