[Discuss-gnuradio] how to transmit a DQPSK Modulated Sequence through US
From:
Bill Stevenson
Subject:
[Discuss-gnuradio] how to transmit a DQPSK Modulated Sequence through USRP (how to handel the carrier?)
Date:
Mon, 14 Apr 2008 05:20:47 +0100 (BST)
Hello, everybody
I am trying to transmit a DQPSK Modulated Sequence into sky through USRP, but after the symbols whose types are complex go through the pulse shaping filter, how can we put them onto a carrier, say cos(2*pi*fc*t). Should we multiply the complex symbols with cos(2*pi*fc*t) or with exp(2*pi*fc*t)? Should we sample the symbols after multiplying carrier or before multiplying carrier? thank you!!!
Bill
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