Re: [Discuss-gnuradio] FFT algorithm used in FFT block
So according to the link the library doesn't utilize one particular algorithm but is optimized to use the "best" algorithm depending on n according to this link https://cnx.org/contents/ulXtQbN7@15/Implementing-FFTs-in-Practice So, is there any particular way to figure out which algorithm is used when using the block in a flow graph? Tellrell Sent from my iPhone > On Apr 1, 2018, at 1:51 AM, Ron Economos wrote: > > GNU Radio uses the FFTW library. > > http://www.fftw.org/ > > Scroll down to the "Literature" section for detailed papers. > > Ron > > >> On 03/31/2018 10:01 PM, Tellrell White wrote: >> Hello >> Does anyone have any knowledge on the actual FFT algorithm used in the FFT >> block in GNU Radio? >> >> Tellrell White >> > > > ___ > 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
Re: [Discuss-gnuradio] FFT algorithm used in FFT block
GNU Radio uses the FFTW library. http://www.fftw.org/ Scroll down to the "Literature" section for detailed papers. Ron On 03/31/2018 10:01 PM, Tellrell White wrote: Hello Does anyone have any knowledge on the actual FFT algorithm used in the FFT block in GNU Radio? Tellrell White ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] FFT algorithm used in FFT block
Hello Does anyone have any knowledge on the actual FFT algorithm used in the FFT block in GNU Radio? Tellrell White ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Flowgraph heartbeat pulse
Might work for you: Any kind of source, throttled to 1/HEARTBIT_INTERVAL, to a UDP sink. Example: Constant Source(1) -> Throttle (1 S/s) -> UDP Sink will write the number 1 to the designated UDP sink, once every second. On Sun, Apr 1, 2018 at 12:22 AM Milos Milosavljevic < milos.milosavlje...@spire.com> wrote: > Hi All, > > I was wondering if someone can give me some hints on the below please. > > I have a flowgraph running continuously demodulating some off air signals > and spitting out meta data about the parameters, calculated SNRs, BER, freq > offset estimations, etc. That meta and output data is parsed regularly and > saved to a database. > > However, sometimes it is either meta missing or data or both. I am > convinced that the flowgraph either stalls or crashes. I need to capture it > where exactly but first I want to develop a tool to monitor the flowgraph > to now when it crashed or hanged. > > So I want to add a hearbeat somewhere which I can monitor and know exactly > that it is not running anymore. Does anybody have any ideas of what would > be the best way to do it? Can I use something from the library for this? > > Any suggestions will be appreciated. > > Many thanks, > Milos > > ___ > 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] Flowgraph heartbeat pulse
Hi All, I was wondering if someone can give me some hints on the below please. I have a flowgraph running continuously demodulating some off air signals and spitting out meta data about the parameters, calculated SNRs, BER, freq offset estimations, etc. That meta and output data is parsed regularly and saved to a database. However, sometimes it is either meta missing or data or both. I am convinced that the flowgraph either stalls or crashes. I need to capture it where exactly but first I want to develop a tool to monitor the flowgraph to now when it crashed or hanged. So I want to add a hearbeat somewhere which I can monitor and know exactly that it is not running anymore. Does anybody have any ideas of what would be the best way to do it? Can I use something from the library for this? Any suggestions will be appreciated. Many thanks, Milos ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
