Re: [Discuss-gnuradio] Generate a specific wave form

[Marcus Müller]

Hi Antonny,
> A primary user might be sending a signal all the time (this is my signal 
> source block). During this event, my Energy Detector will analyse the 
> spectro and pass or not the signal of my primary user (the entire 
> signal, everything that is being sent),
That is exactly the functionality of the power_squelch block :)
> because that's what a cognitive radio does. 
Well, yours :)
> So, when it's possible, I will use the spectro to send a few 
> informations.
I'm still not totally clear on what kind of *signal* you want to
produce, or whether you describe a temporal *behaviour* of your system.

What aspect of your implementation are you currently working on? The
Energy Detector/pass-through functionality?

Best regards,
Marcus

PS: I think you've described your thing pretty well, I'm just not
getting it, sorry.
I think at this point, a drawing with a few annotations of what your
system should do would do wonders, because then we'd have something
clear to refer to when discussing!

On 07/01/2015 02:20 PM, Antonny Caesar wrote:
> Jeon and Marcus
>
> I'm very happy you're helping me to build. This is the first time I use 
> GNURadio and it's very different of other softwares I usually work.
>
> I can tell you my purpose, no problem at all. I'm trying to start a 
> project about Cognitive Radio. For now, I want to build an Energy 
> Detector.
>
> A primary user might be sending a signal all the time (this is my signal 
> source block). During this event, my Energy Detector will analyse the 
> spectro and pass or not the signal of my primary user (the entire 
> signal, everything that is being sent), because that's what a cognitive 
> radio does. So, when it's possible, I will use the spectro to send a few 
> informations.
> When the spectro is being used (vector = 0, for example), I can't send 
> information, because it would damage the signal of other person. I just 
> want to send data, when the spectro is not being used (vector = 1).
>
> To simulate this analysis, I was trying to use a vector source or a 
> random source, because it's impossible to know when the spectro will be 
> free; it's random.
>
> I think it's easier to understand now. Thank you a lot for helping me 
> here, guys.
>