From: No Spam 
Subject: Re: Internet Svc Provider to use GSM via Radio
Date: 1997/12/23
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Ted Lee wrote:
> 
> I read today in the Vancouver Sun that an Internet Service Provider going to
> use GSM 1900 MHz to provide internet access to its customer base of 1400 as
> an experiment. The radiowave link will provide between and up to 14.4k to
> 250KBS. With hopes to increase to 550 KBS.
> 
> The reason for this was in cost of telephone lines to rural areas and the
> quality of the telephone lines to provide high speed service.
> 
> I didn't know that GSM could handle high speed data. What about CDMA? Can it
> do the same?

GSM's raw channel rate is 277kbps (?). However, that gets sliced up
amongst several users (6?), and guard bands, coding and error checking
could eat up between 1/3 and 1/2 of that. However, something like
V.42bis could boost apparent throughput via compression, so the 550 kbps
figure probably isn't impossible under ideal conditions *if* a single
user hogs the entire slot. PHS has provisions to allow a single user to
use multiple slots, I believe.

No, CDMA could not be made to go anywhere near this fast in its present
form. I'd guess 11-13 kbps would be the top for today's CDMA products.

-Matt