On 06/21/2011 05:33 PM, Tom Hendrick wrote:
Hello all, I am helping a colleague with the USRP center frequency
tuning functionality and it is my understanding the signal must
contain I and Q values centered at 0Hz.
A real valued signal is generated independently by another program and
is fed to a GRC script. Is it easy/possible to make a GRC script
downshift the signal to 0 Hz and convert to I and Q values or is there
perhaps an example of this already?
Thank you in advance- Tom
You can use a Hilbert transform to turn it into a complex-valued signal.
You can then mix it using a complex signal source and a multipler to
downshift it.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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