Re: [Discuss-gnuradio] Audio File transmission using Qpsk modulation

[JONNY LEYIKUN]

Ok, thank you sir

On Sat, 12 May 2018, 18:46 Müller, Marcus (CEL), <address@hidden> wrote:

There's no "exact block" to solve your problem.
You have a specific task, and you'll have to design a specific
solution. We can't do that for you, as much a we'd like to.

Best regards,
Marcus

On Sat, 2018-05-12 at 18:10 +0200, JONNY LEYIKUN wrote:
> Thanks for the feedback!  Mr muller
> To be honest am new for this software but I tried my best to figure
> out this problem.if you can please send me the exact block
>
>
>
> On Sat, 12 May 2018, 12:11 Müller, Marcus (CEL), <address@hidden>
> wrote:
> > No, 15 kHz is not "very minimum", it's impossible. Your console
> > will
> > contain information that the UHD picked a different, higher,
> > sampling
> > rate.
> >
> > Your "I picked 15 kS/s to get a clear audio file" doesn't make much
> > sense; this is not how digital communications work!
> >
> > I'm afraid you'll have to be way more careful when designing an RF
> > transceiver. Maybe you'd want to read up on complex baseband,
> > constellations, pulse shaping, symbol synchronization and
> > resamplers,
> > so that you understand what's happening in your flow graph.
> >
> > Best regards,
> > Marcus
> >
> > On Thu, 2018-05-10 at 17:29 -0400, JONNY LEYIKUN wrote:
> > > HI  Jeff Long
> > >
> > > Yaah 15K is very minimum to use in USRP sink 
> > > I use 15K sample rate in order to get clear  Audio File. but I
> > also
> > > use large sample rate in USRP sink but the result is more or less
> > the
> > > same
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