ok thanx for the replies! On Sat, Jul 5, 2014 at 7:19 PM, Vanush Vaswani <van...@gmail.com> wrote: > 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
