Sean Breheny wrote:

> [...]
> It is interesting to note that all modulation schemes which approach
> the Shannon-Hartley limit for bitrate per signal strength sound pretty
> much like white noise (QAM, OFDM, and CDMA/DSSS are three prominent
> examples).

Thank you very much for this explanation, Sean - I sometimes take a look 
at (newer) modulation scheme, and it's good to know.

-- 
Ciao, Dario
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