How to transmit a DQPSK Modulated Sequence through USRP (how to handel the carrier?)

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(2pifct).
Should we multiply the complex symbols with cos(2
pifct) or with
exp(2pifc*t)? Should we sample the symbols after multiplying carrier
or before multiplying carrier? thank you!!!

Bill

This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.

| Privacy Policy | Terms of Service | Remote Ruby Jobs