One thing i forgot , there should be upsample(pulse shaping ) OR repeat by N block between "chunk2symbol" and "fm modulator"
On Thu, Feb 16, 2012 at 11:09 PM, Adeel Anwar <adeela...@gmail.com> wrote: > Anju, > > Try connecting these > > data_src(0,1)==>chunk to symbol(-1,1)==>fm > modulator(sensitivity=(2*pi*(freq_sep/2.0))/samp_rate)) > > where freq_sep = symb_rate (for non-coherent detection) > > On receiver side u can use quadrature demoulator > > > -Adeel > > On Fri, Feb 17, 2012 at 12:42 AM, anju babu <anju.ora...@gmail.com> wrote: > >> >> HI all, >> >> I'm developing an underwater modem which uses acoustic signal >> for transmission and reception .for that i need to have a FSK >> modulator.since CPFSk is not practically possible in underwater ,i decided >> to use VCO.I have to modulate data from a file sourc(output type byte) >> using 10khz carrier.i don't know how to do this.when i connected a file >> source -uchar to float- vco -scopesink and observed output i couldn't see >> what i was expecting.can't i input the vco with a file source?please help >> me. >> >> thanks in advance >> ANJU >> -- >> ** >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >
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