Re: [Discuss-gnuradio] dive into gnu-radio

Hi, 2016-03-16 20:36 GMT+01:00 Desmond Crozby : > What I need is: > 1) understand the blocks, their purpose and what they do > 2) learn how to create a minimal scenario using grc > 3) learn how to create blocks of my own > 4) create more complicated scenario. > > I think there

Re: [Discuss-gnuradio] Change frequency in USRP source automatically

mitive_msg_connect(self, *args) > > RuntimeError: invalid msg port in connect() or disconnect() > > > > File " The GNU Radio version is GNU Radio Companion > v3.7.6.1-65-g500517ac, do you know where is the problem? > > > > Many thanks, > > Ya

Re: [Discuss-gnuradio] Change frequency in USRP source automatically

thée, > > > > Thank you for your advice. But if I want to change the center frequency > from 2.37GHz-2.43GHz with each time stepping 2MHz, how can I realize it by” > Message Strobe”? > > > > Many thanks, > > Yan > > > > *From:* Timothée COCAUL

Re: [Discuss-gnuradio] Change frequency in USRP source automatically

Hi Yan, You should only pass only one value in the second member. Try : pmt.cons(pmt.intern("freq"), pmt.to_pmt(2.4e9)) Cheers, Timothée. 2016-03-15 12:14 GMT+01:00 Yan Huang : > Hi Martin, > > Thank you, it works well. But I want to change the frequency >

Re: [Discuss-gnuradio] Moving Average Block

r a short period of time, but my Gnuradio does not have a "variable sink". Thanks in advance. Em 07/01/2016 17:18, "Timothée COCAULT" <timothee.coca...@gmail.com> escreveu: > Hi Pedro, > > When you're not sure, the best solution is often to look at the code. &g

Re: [Discuss-gnuradio] TETRA demodulator advices

Le lun. 7 déc. 2015 à 8:06, Sylvain Munaut <246...@gmail.com> a écrit : Hi, I've looked into that but I'm afraid some blocks won't play well with the constellation class (for example, they expect a constellation to have 2**(bits) points, but PI/4 DQPSK uses 2 bits and has 8 points). I

Re: [Discuss-gnuradio] TETRA demodulator advices

Hi Tom. First, thank you for your answer. Le mar. 1 déc. 2015 à 16:33, Tom Rondeau a écrit : This is a very open-ended question. It'd take a lot of work for someone to go through your receiver and make any suggestions. Your best bet is to ask very pointed questions

Re: [Discuss-gnuradio] GNUradio DQPSK bit error rate

Le dim. 6 déc. 2015 à 12:50, Marcus Müller a écrit : Hi Timothée, hi Haaris, is it OK if I paste the answer to the question on StackOverflow? http://stackoverflow.com/questions/34096116/gnu-radio-dqpsk-bit-error-rate Best regards, Marcus Hi Marcus, Yes, of course.

Re: [Discuss-gnuradio] GNUradio DQPSK bit error rate

Le sam. 5 déc. 2015 à 20:42, Haaris a écrit : Hello Almost a month ago i started working on a digital communications project which involves GNUradio. And I am severely struggling to get past some errors or mismatches I am encountering in GNUradio. I am desperately in

Re: [Discuss-gnuradio] transmit file with qpsk on e310

dded. the "psk demod" got the freq and phase correction itself. and waht is the delimited messages. thank you --Ekko 2015-11-29 1:26 GMT+08:00 Timothée COCAULT <timothee.coca...@gmail.com>: Hi, First you should have a look at the PSK demodulation tutorial :

Re: [Discuss-gnuradio] transmit file with qpsk on e310

Hi, First you should have a look at the PSK demodulation tutorial : http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorial_PSK_Demodulation . It uses a Polyphase Clock Sync between the receiver and the constellation decoder. Alternatively, you can use the Constellation Receiver

[Discuss-gnuradio] TETRA demodulator advices

Hi, I am writing a TETRA demodulator with GNU Radio Companion without any OOT block. My flowgraph works but as I don't have a signal processing background, I'm not really sure that my choice of the blocks and their parameters is the best for my purpose. The TETRA modulation uses PI/4