[Discuss-gnuradio] The threshold of energy detection

[Yan Huang]

Hi all,

 

I’m using USRP B210 to do spectrum sensing, and the flow graph as attached file. It can get a result that there is a peak at 5.8 GHz which is the receiving signal frequency.

 

But if I change the Moving Average block to a threshold, there is no output like previous one.

 

I want to ask how can I get a result have a peak at 5.8 GHz  in frequency domain using threshold. I can only get 1 or 0 in time domain not in frequency domain.

 

Is there anyone can give me some advice? Thanks in advance.

 

 

Yours Sincerely

 

Yan

 

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spectrum sensing.png
Description: spectrum sensing.png

result of spectrum sensing.png
Description: result of spectrum sensing.png