[Discuss-gnuradio] Questions about acquisition time

2012-12-16 Thread Gong Zhang
Hi everyone, I am curious about acquisition time of a unknown frequency with usrp. Thanks. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] QT GUI FFTSINK in C++ Flowgraph

2012-12-16 Thread Daniel Labarowski
I've been toying around with this a bit more. I added #include QWidget to the top of my program. I also added QWidget* parent = new QWidget; before my call to qtgui_make_sink_c and replaced QWidget *parent=NULL white parent. I am now getting the following error top_block.cc:(.text+0x8cd):

Re: [Discuss-gnuradio] FSK performance as a function of Fd?

2012-12-16 Thread Joanna Rutkowska
On 12/16/12 04:32, Nathan West wrote: Hi! - response interleaved. (after some sucking at list management) -nw On Sat, Dec 15, 2012 at 5:48 PM, Joanna Rutkowska joa...@invisiblethingslab.com wrote: Hello, I've been trying to understand today how does frequency deviation (Fd) affect the

Re: [Discuss-gnuradio] FSK performance as a function of Fd?

2012-12-16 Thread Michael Ossmann
On Sun, Dec 16, 2012 at 11:27:47PM +0100, Joanna Rutkowska wrote: Thanks for the detailed answer! I did some more study and my understating is that what you wrote above applies to (theoretical) coherent demodulation. AFAIU nearly all practical receivers use non-coherent demodulation (because

Re: [Discuss-gnuradio] FSK performance as a function of Fd?

2012-12-16 Thread Brian Padalino
On Sun, Dec 16, 2012 at 9:39 PM, Michael Ossmann m...@ossmann.com wrote: On Sun, Dec 16, 2012 at 11:27:47PM +0100, Joanna Rutkowska wrote: Thanks for the detailed answer! I did some more study and my understating is that what you wrote above applies to (theoretical) coherent

Re: [Discuss-gnuradio] FSK performance as a function of Fd?

2012-12-16 Thread Michael Ossmann
On Sun, Dec 16, 2012 at 11:36:56PM -0500, Brian Padalino wrote: It's really just an SNR in a given bandwidth problem. That makes sense. Looking back through the datasheet, I suspect that FM demodulation is implemented by the PLL phase detector rather than by bandpass filters.

Re: [Discuss-gnuradio] [ Calculating the amplitude of a signal source ]

2012-12-16 Thread Ashish Raste
** (i) How many *bytes* does each I or Q component take? -- Ashish ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio