On Thu, 10 May 2012 21:40:36 -0700
Bruce Perens <br...@perens.com> wrote:

> On 05/10/2012 09:33 PM, David Rowe wrote:
> > However I think any form of PSK would still require a SSB tcvr, so
> > no HT.
> When no part of the signal is carried as an amplitude variation, it
> can be amplified using a non-linear amplifier. GMSK is very
> definitely used this way.

Yes, but PSK has a phase trajectory straight through the origin of the
vector diagram, which is why Pi/4DQPSK with even and odd symbols at 45
degree offset came into being to reduce the large amplitude variation.

-- 

Brian Morrison

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