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Re: [Discuss-gnuradio] power control when packets transmitting

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] power control when packets transmitting
Date: Fri, 2 May 2008 07:12:51 -0700
User-agent: Mutt/1.5.17 (2007-11-01)

On Fri, May 02, 2008 at 08:42:41AM -0400, KC Huang wrote:
> Hi:
> My recent research project focuses on how to implement CogNet on
> GNUradio platform. As u know, the concept of cognitive radio is that
> the parameters can be adjusted according to different
> situations. Such as controlling power, switching freq and modulation
> when the packets are transmitting. But I am not sure if GNUradio
> platform can adjust these parameters in the middle of tranmission. I
> searched previous threads and found that metadata structure can do
> that because of pipeline transmission. Are there any ways to adjust
> parameters without using mblock format because I don't think mblock
> is mature now?

Yes it can.  Just call the exported interfaces for the blocks in
question.  On a related topic, I'll be adding an mblock-interoperable
"message receive" method to GNU Radio blocks, so that you'll be able to
thread-safely send and receive messages in GNU Radio code.  The
runtime system will ensure that the message receive code is only
called when you're NOT in the work method.

Did this answer your question?

> I appreciate any suggestions!
> Thanks!!
> KC Huang 


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