You may refer to this example to see how to transmit 9.6kbps GFSK signal through an AWGN channel.
https://www.youtube.com/watch?v=N1hR6VgWeow&feature=youtu.be On Sun, Jul 6, 2014 at 12:00 AM, Marcus Müller <marcus.muel...@ettus.com> wrote: > We might be talking about different blocks. > I'm referring to gr::analog::frequency_modulator_fc, where the > documentation only says[1] > > radians/sample = amplitude * sensitivity > > From what you paste as formulas this does not look like the general > frequency modulation, but like a digital modulation scheme, e.g. GMSK. > > Anyway, we will not be able to tell you what you'll need to use as > parameters for your transmitter -- that is something that you, based on > your communication engineering skills, will need to decide yourself. > > Sincerely, > Marcus Müller > > [1]http://gnuradio.org/doc/doxygen/classgr_1_1analog_1_1frequency__modulator__fc.html#a9c252eeb8c9daf6ccd50427d3bc55bd3 > > On 05.07.2014 09:59, jason sam wrote: >> Sorry for prolonging the discussion but I am a bit confused here.The >> sensitivity parameter for Freq Mod block is defined as: >> >> sensitivity = (pi * modulation_index) / samples_per_symbol >> where, >> >> modulation_index = deviation / (baud_rate / 2) >> >> So what values should i plug in for samples_per_symbol and baud_rate >> in the formulas? >> >> >> On Fri, Jul 4, 2014 at 9:14 PM, Marcus Müller <marcus.muel...@ettus.com> >> wrote: >>> Not at all, because for these blocks, symbols have no meaning. >>> >>> On 04.07.2014 17:38, jason sam wrote: >>>> Yes Marcus,u are r right and i am also asking about such blocks like >>>> the FM Mod block..In this block u have an option to set sample rate >>>> but how can u set samples per symbol?? >>>> >>>> On Fri, Jul 4, 2014 at 6:08 PM, Marcus Müller <marcus.muel...@ettus.com> >>>> wrote: >>>>> Hi Ali, >>>>> as said several times: Sampling rate, samples per symbol etc are >>>>> concepts that are meaningful only for certain blocks, and thus there is >>>>> no sense in setting those globally. >>>>> >>>>> Greetings, >>>>> Marcus >>>>> On 04.07.2014 08:33, jason sam wrote: >>>>>> Thanx Martin,but where in GRC we can set samples per symbol??I am new >>>>>> to this so i don't know yet... >>>>>> >>>>>> Ali >>>>>> >>>>>> On Tue, Jul 1, 2014 at 2:18 PM, Martin Braun <martin.br...@ettus.com> >>>>>> wrote: >>>>>>> On 06/26/2014 11:06 AM, jason sam wrote: >>>>>>>> I am bit confused b/w the two terms.I have read some material and i >>>>>>>> got the following relationship b/w the two: >>>>>>>> samples/second =samples/symbol * symbols/second >>>>>>>> And i think in GRC samples per symbol is 1(plz correct if i am >>>>>>>> wrong).So sample rate becomes equal to baud rate(symbols/second)?? >>>>>>> samples per symbol is whatever you set it to; common values are 2 and 4 >>>>>>> (this also depends on the modulation used). Higher values are often used >>>>>>> for demo purposes. >>>>>>> >>>>>>> M >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> 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 >>>>> _______________________________________________ >>>>> 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 _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
