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Re: [Discuss-gnuradio] RE: [Commit-gnuradio] gnuradio-core/src/lib/gener
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From: |
Johnathan Corgan |
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Subject: |
Re: [Discuss-gnuradio] RE: [Commit-gnuradio] gnuradio-core/src/lib/general gr_correlate_acce... |
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Date: |
Fri, 30 Jun 2006 08:15:40 -0700 |
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User-agent: |
Thunderbird 1.5.0.4 (X11/20060615) |
Matt Ettus wrote:
> On the other hand, since it is differential, you usually don't use a
> costas loop with pi/4-DQPSK.
Is there a different way to assure frequency/phase lock, or are they not
needed? I know for differential detection constellation doesn't need to
be locked in the correct absolute phase, but is it the case it can be
left to rotate as well?
-Johnathan