Re: Increasing the speed of dial-up to that of cable -- possible?

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Article #242

#242

From: Vanguard
Date: Mon, 13 Aug 2007 23:21

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"Radium" <glucegen1@gmail.com> wrote in message 
news:1187045374.227004.161110@g12g2000prg.googlegroups.com...
> Hi:
>
> Quotes from 
> http://groups.google.com/group/sci.electronics.basics/msg/0c013cf5371da8dc?hl=en&
> :
>
>>Multiple-level quadrature modulation,
>>"constellation modulation",
>>is most common for packing
>>lots of bits per Hz of bandwidth.
>>The more you pack,
>>the better the s/n ratio has to be.
>>
>>http://en.wikipedia.org/wiki/Quadrature_amplitude_modulation
>>
>>http://en.wikipedia.org/wiki/Constellation_diagram
>
> Does this mean that Quadrature Modulation and Constellation 
> Modulation
> can be used -- at least in theory -- to give dial-up modem 
> connections
> around the same fast speeds provided by Broadband cable modems?


It's called aDSL.  Uses the same phone line as your analog modem.  Go 
search on Wikipedia or Google for info.

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Subject: Re: Increasing the speed of dial-up to that of cable -- possible?
Date: Mon, 13 Aug 2007 18:21:27 -0500
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