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Re: [Discuss-gnuradio] How can I build component usrp on E100?


From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] How can I build component usrp on E100?
Date: Wed, 19 Oct 2011 12:58:32 -0400
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1

On 19/10/2011 12:53 PM, Josh Blum wrote:

You will have to change the block that is instantiated to be a uhd usrp
source or sink. There is no reason that rest of your
modulation/demodulation chain or mac layer would have to change.

Cheers,
-Josh
A further consideration for porting applications/examples that "know" that they're talking to a USRP1 is that UHD uses a range of {-1.0,+1.0} for complex_float data streams, and internally scales that to whatever is appropriate for the hardware. There are plenty of apps out there that "know" that the data should be in {-32767,+32768}, and they will end end producing clipping in UHD unless the
  data are re-scaled.








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