Talk:Analog transmission

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Telecommunications

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Relation to digital transmission?[edit]

I think digital modulation schemes are considered as analog transmission in some books, and digital transmission in others. Am I right? Any suggestions for references? Mange01 (talk) 23:46, 22 February 2009 (UTC)[reply]

This article is complete misunderstanding of analog vs. digital relation. It is not possible to have digital comms without analog backbone. Digital communication just adds another layer. For example PSK is a switched modulation of phase of (usually) single tone that basically is analog. Symbols carried by phase might and usually do represent digital data. QAM is digital or analog? Sure one can apply series of bits to symbols but actually it is sum of two orthogonally modulated AM signals. No signal is switched instantly - it is always continuous (filtered) even if rapid. Reality is analog. RF signals are analog. Light is analog. — Preceding unsigned comment added by 79.184.210.246 (talk) 15:30, 11 April 2017 (UTC)[reply]