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To: Peter J Hudson who wrote (8187)4/1/2000 7:08:00 PM
From: lurqer  Respond to of 13582
 
Well that certainly makes more sense. I guess one question now is to what extent 5MHz for 3G systems is true for all 3G systems. I understand that the specs for various flavors of WCDMA are somewhat fluid.

lurking...

lurqer



To: Peter J Hudson who wrote (8187)4/1/2000 7:37:00 PM
From: gdichaz  Respond to of 13582
 
Peter: "Bandwidth is the spectrum used around the center carrier frequency, 1.25MHz for our existing systems, 5MHz for 3G systems...... Hope this helps. If I'm wrong, the real experts can slap me around a little bit. Pete"

Hey, is this the answer to the DDI riddle?

CDMA2000 for "existing systems" and WCDMA (possibly) for "3G systems.

Or CDMA2000 as an upgrade to 1.25MHz

and

WCDMA as the "standard" for 5MHz ?

But to compound the confusion, 1XRTT is the "first phase" of third gen CDMA2000 and is an upgrade to existing 1.25 MHz CDMA IS 95 A, or B.

How about someone expert commenting please.

Best.

Chaz

PS And isn't this the key to the narrowband label for 1.25 MHz and the broadband label for 5 MHz?

PPS And to compound the confusion, can't four 1.25 MHz "channels" using CDMA2000 and HDR be used within the 5 MHz "broadband" auctioned for "3 G".

HELP Please !



To: Peter J Hudson who wrote (8187)4/1/2000 7:58:00 PM
From: Eric L  Respond to of 13582
 
Peter,

<< The European GSM system uses a 1800 MHz (1.8 GHz) carrier frequency >>

The European (and rest of the wotld) GSM system uses 900 MHz primarily. The original DCN's (Orange, one2one, et al) use 1800 MHz spectrum and are now incorporatd under the GSM Association and the original DCN-1800 specifications that PCS-1900 (US) including CPHS, were incorporated more or less in the GSM Phase 2+ specifications a few years back.

- Eric -