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Re: [Discuss-gnuradio] Scale into a proper range before input to USRP
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From: |
Eric Blossom |
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Subject: |
Re: [Discuss-gnuradio] Scale into a proper range before input to USRP |
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Date: |
Wed, 9 Sep 2009 08:49:21 -0700 |
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User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Wed, Sep 09, 2009 at 02:51:56AM -0700, Milo Wong wrote:
> Hi all,
>
> I was thinking about the ways of scaling the modulated complex(with
> imag. part equals to 0) symbol to the range +/- 32767 which is accepted
> by USRP. My idea is to find the output range (Min, Max) and first scale
> to range(0, 65535) and then subtract by 32767 to drop in the range
> (-32767, 32767). I was wondering if there's any other solutions? Any
> suggestions and advice will be appreciated.
>
> Sincerely,
> Milo
>
Milo,
We generally do this by multiplying by a constant.
Eric