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Re: [Discuss-gnuradio] Re: new to GNU radio
From: |
Johnathan Corgan |
Subject: |
Re: [Discuss-gnuradio] Re: new to GNU radio |
Date: |
Tue, 4 Mar 2008 08:57:00 -0800 |
On 3/4/08, Manav Rohil <address@hidden> wrote:
> I cannot see a carrier frequency specified anywhere in bqpsk.y..Where do
> i specify the carrier frequency for my transmission...this part is still
> a bit hazy...
The USRP acts as a direct conversion transmitter. The QPSK modulated
baseband waveform (constellation) is generated on the host and sent to
the USRP via USB, where it is turned into an analog I and Q baseband
signal with digital to analog converters. The transmitter
daughterboard generates a local oscillator at the desired carrier
frequency, and a complex mixer modulates this carrier with the I and Q
signals to form your passband transmitted waveform.
--
Johnathan Corgan
Corgan Enterprises LLC
http://corganenterprises.com/
- [Discuss-gnuradio] new to GNU radio, Manav Rohil, 2008/03/02
- Re: [Discuss-gnuradio] new to GNU radio, George Nychis, 2008/03/02
- Re: [Discuss-gnuradio] new to GNU radio, George Nychis, 2008/03/02
- [Discuss-gnuradio] Re: new to GNU radio, Manav Rohil, 2008/03/04
- Re: [Discuss-gnuradio] Re: new to GNU radio,
Johnathan Corgan <=
- Re: [Discuss-gnuradio] Re: new to GNU radio, Steven Clark, 2008/03/04
- [Discuss-gnuradio] Re: new to GNU radio, Patrick Strasser, 2008/03/04
- [Discuss-gnuradio] Re: new to GNU radio, Manav Rohil, 2008/03/04
- Re: [Discuss-gnuradio] Re: new to GNU radio, Brian Padalino, 2008/03/04
- Re: [Discuss-gnuradio] Re: new to GNU radio, George Nychis, 2008/03/04
- Re: [Discuss-gnuradio] Re: new to GNU radio, Steven Clark, 2008/03/04