Re: [Discuss-gnuradio] Bit error rate test

Thanks for your reply, Martin. I can understand your point that the estimated SNR in the script corresponds to ES/N0, which should be twice of Eb/N0 in the case of qpsk. You do raise a good question: why the BER is shown as 10^(-11)? I rechecked the script. The default bit rate is 250e3, which is

Re: [Discuss-gnuradio] Bit error rate test

On Wed, Dec 11, 2013 at 04:15:11PM -0700, Henry Jin wrote: > I tried to use digital_bert_tx.py and digital_bert_rx.py to test the BER > performance of different modulations. The command I use is > ./digital_bert_tx.py > --tx-freq=5.1e9 --tx-gain=30 -S 8 --mod-code=gray -m bpsk. The results for >

[Discuss-gnuradio] Bit error rate test

Hi I tried to use digital_bert_tx.py and digital_bert_rx.py to test the BER performance of different modulations. The command I use is ./digital_bert_tx.py --tx-freq=5.1e9 --tx-gain=30 -S 8 --mod-code=gray -m bpsk. The results for BPSK is good enough. When SNR is above 20, the BER is around 10^(-1

Re: [Discuss-gnuradio] bit error rate

>> I am trying to find the Bit error rate for a vector signal.I get a error >> rate of 0.528(i am assuming it to be 52%) when i don't transmit and an >> error rate of 0.625000 when i transmit. >> >> Am i right on this??i dont understand the logic behind it.. >> >> Also,is 52% not too high??!!! > >

Re: [Discuss-gnuradio] bit error rate

On Fri, Mar 8, 2013 at 8:47 PM, manjusha wrote: > ber_before_tx.png > > ber_tx.png > > It doesn't look like you're doing any carrier recovery? Before putting USRP blocks in th

[Discuss-gnuradio] bit error rate

ber_before_tx.png ber_tx.png I am trying to find the Bit error rate for a vector signal.I get a error rate of 0.528(i am assuming it to be 52%) when i don't transmit and an

[Discuss-gnuradio] Bit Error Rate of Digital Modulation

Hello all, I tried to use this grc file to test the bit error rate for the different digital modulation method, but it doesn't work so well. When **I set Gray Code(No), Diff Encoding(No), the BER of QAM Mod and Demod is 0. In the other case, the BER is not 0. Do I need any block else to make i

[Discuss-gnuradio] Bit Error Rate Testing?

I have been experimenting with the gmsk demodulation block, and am able to successfully demod 50M+ continuous pseudorandom symbols at 2.0 MSym/sec. Kudos to the USRP + GNURadio devs for making that possible, and thanks for making GNU Radio open-source. The testing methodology so far has been to o