Re: vector mode This kind of code is what you're looking for https://github.com/gnuradio/gnuradio/pull/1462#discussion_r140610909
On Thursday, September 21, 2017, Tellrell White <rell...@gmail.com> wrote: > Thanks for the replies guys > > Marcus I know you can find the PSD of a signal in both the time and > frequency domain. The only reason I'm choosing to use the frequency domain > is because it was one of the earlier methods that I learned about. That's > really all. From the archives I've read about people trying to implement > energy detectors in GNU Radio for various applications but I never saw > anybody display the results in any way or form. They mostly just send the > statistics to a file sink and export to matlab or some other software for > further processing. So, ultimately, if the way that I'm implementing the > algorithm is correct thus far, I'm looking for a way to display(graphically > or otherwise) my result or the avg power. > > Nathan would you remove the vector to stream block as well? And, why would > you have to remove the stream to vector block? Isn't that the format that I > want the data in? Also, how do you go about adding "vector modes" to the > remaining blocks? > > Tellrell > > On Thu, Sep 21, 2017 at 1:30 PM, West, Nathan <n...@ostatemail.okstate.edu > <javascript:_e(%7B%7D,'cvml','n...@ostatemail.okstate.edu');>> wrote: > >> You can use the qt gui vector plot to plot a vector. That means removing >> the stream to vector block. You might have to add "vector" modes to some >> blocks to do the other operations you want. >> >> On Wed, Sep 20, 2017 at 6:31 PM, Tellrell White <t_whit...@yahoo.com >> <javascript:_e(%7B%7D,'cvml','t_whit...@yahoo.com');>> wrote: >> >>> Hello Marcus >>> You are absolutely correct. Is there an existing sink that would allow >>> me to display avg power given some threshold ? >>> >>> Tellrell >>> >>> >>> On Wednesday, September 20, 2017 5:54 PM, Marcus Müller < >>> marcus.muel...@ettus.com >>> <javascript:_e(%7B%7D,'cvml','marcus.muel...@ettus.com');>> wrote: >>> >>> >>> Hi Tellrell! >>> Why should both plots show the same? You send in completely different >>> signals! >>> Best regards, >>> Marcus >>> >>> On 09/20/2017 09:27 AM, Tellrell White wrote: >>> >>> Hello All >>> I'm working on a project involving signal detection of an IEEE 802.15.4 >>> waveform using energy detection. >>> The algorithm for energy detection goes as follows: >>> >>> A/D conversion -> FFT -> mag^2 -> (1/N) ^ M -> threshold >>> comparison >>> >>> Currently, I'm doing simulations in gnuradio companion with a focus of >>> just trying to construct the the algorithm and get an output. Below I've >>> attached the current flowgraph i'm using along with screen shots of the >>> flowgraph and the outputs from the fft sinks. >>> >>> In the flowgraph i'm using gaussian noise as my source. I send this >>> noise to both an FFT sink and also through the energy detection algorithm. >>> My expectation is that both sinks will give me the same result, however, >>> the output coming from the algorithm doesn't match the other sink and I'm >>> currently now sure why this is. Are there some blocks I'm currently missing >>> and/or is the FFT sink an incorrect way of trying to display the power >>> coming from the energy detection algorithm? >>> >>> Any suggestions are welcome. >>> >>> Regards >>> Tellrell >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing listdiscuss-gnura...@gnu.org >>> <javascript:_e(%7B%7D,'cvml','Discuss-gnuradio@gnu.org');>https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> <javascript:_e(%7B%7D,'cvml','Discuss-gnuradio@gnu.org');> >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> <javascript:_e(%7B%7D,'cvml','Discuss-gnuradio@gnu.org');> >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> <javascript:_e(%7B%7D,'cvml','Discuss-gnuradio@gnu.org');> >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >
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