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Subject: Re: QPSK modulation design
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
Date: Tue, 5 Nov 2002 14:58:18 -0800
NNTP-Posting-Date: Tue, 05 Nov 2002 14:55:44 MET
Organization: @Home Network
"Zak" wrote in message
> Help needed.
> I need to use QPSK modulation in my design of simple circuit that can
> be used to transmit data via mains supply. I need schematic design for
> the QPSK simple modulator,and which type of transformer can I use for
> Coupling to the mains supply.
> Does anyone know a good site or article that could help me?
> It's pretty urgent and I just don't know how to do it.
Take a look at http://www.privateline.com/PCS/modulation.htm No schematics
though, QPSK is not that simple. Is there a special reason for wanting to
use QPSK? There are much easier modulation schemes like AM, FSK etc.
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