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Re: [Discuss-gnuradio] Implementation of dynamic spectrum access

From: adib_sairi
Subject: Re: [Discuss-gnuradio] Implementation of dynamic spectrum access
Date: Mon, 9 May 2011 18:57:44 -0700 (PDT)

Yang-56 wrote:
> Ah, I got it. I will look into that.
> Btw, generally speaking, how is the efficiency the spectrum sensing in gnu
> radio? I use the spectrum_sense.py to sense 9M a step and generate 256
> bins which takes me nearly 1 second to sense 1M. It is really slow... 
> -- 

you can see why it is slow when you use spectum_sense.py by browsing in this
forum. search for the spectrum sense discussion =) 

in my case, i modify the code of fftsink_nongl.py (I cite it in my thesis
and in my coming paper in korea) ..the modification enable me to form an
energy detector spectrum sensor. and it is quite fast (in 0.xx ms). actually
it can be faster if you use faster PC and optimized same part of the code. I
am on my way to do this.. we also currently working on parallel or
simultaneous spectrum sensing with data transmission. therefore, we will
eliminate the constrain on sensing time and all its tradeoff.



Mohd Adib Sarijari
Universiti Teknologi Malaysia

my website: http://trg.fke.utm.my/members/adib/
my faculty: http://www.fke.utm.my/
my university: http://www.utm.my/
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