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 list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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