GSM>CDMA 1x in http://www.dslreports.com/forum/r21246728 en Wed, 10 Feb 2010 05:17:30 EDT Wed, 10 Feb 2010 05:17:30 EDT Re: GSM>CDMA 1x http://www.dslreports.com/forum/remark,21250590 patcat88 :
said by antwanp See Profile :

This makes me happy. I was hoping to see a worldwide shift towards LTE in the future. Sorry CDMA 1x, you're a dead format... GSM won.
GSM lost and CDMA won. Qualcomm got their CDMA patents into GSM, and decided to just license patents than worry about market share, and making products, and *gasp* competing.]]> http://www.dslreports.com/forum/remark,21250590 Sat, 11 Oct 2008 11:16:45 EDT Re: GSM>CDMA 1x http://www.dslreports.com/forum/remark,21248331 en102 : CDMA 'wavelength' ?
WCDMA / HSPA is a 'CDMA' based air interface which uses 5MHz physical channels, and ties into GSM's MAP core infrastructure (same infrastructure as GSM phones)

CDMA 1x is also a CDMA based air interface, but uses 1.25MHz physical channels and ties into ANSI core (i.e. same core as AMPS and TDMA used)
CDMA EVDO is a data only (IP based) air interface which uses 1.25MHz channels and ties into an IP backend.

Basically... UMTS/WCDMA (HSPA) and GSM utilize the same 'core' and SIM cards.

CDMA2000 (CDMA 1x/EVDO) utilize a different core.

LTE is an IP only based system which 'should' be able to bridge both CDMA EVDO and UMTS/WCDMA (HSPA) and even possibly WiMAX.
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Canada = Hollywood North]]> http://www.dslreports.com/forum/remark,21248331 Fri, 10 Oct 2008 20:20:24 EDT Re: GSM>CDMA 1x http://www.dslreports.com/forum/remark,21248078 anon : HSPA is an upgrade to GSM that in many cases only requires updated software/firmware on the backend equipment. It is NOT a forklift upgrade to GSM like it is to CDMA. Also, it IS backward compatible with GSM unlike CDMA.

Don't get confused by the fact it uses a W-CDMA air interface as others have pointed.
»hspa.gsmworld.com/]]> http://www.dslreports.com/forum/remark,21248078 Fri, 10 Oct 2008 19:24:41 EDT Re: GSM>CDMA 1x http://www.dslreports.com/forum/remark,21247568 anon :
said by antwanp See Profile :

This makes me happy. I was hoping to see a worldwide shift towards LTE in the future. Sorry CDMA 1x, you're a dead format... GSM won.
Thats interesting cause HSPA is based on the CDMA wavelength. GSM carriers may be choosing HSPA as their upgrade paths, but HSPA is NOT GSM!!!!]]> http://www.dslreports.com/forum/remark,21247568 Fri, 10 Oct 2008 17:31:19 EDT Re: GSM>CDMA 1x http://www.dslreports.com/forum/remark,21247505 mlerner :
said by xenophon See Profile :

Well actually HSPA is not GSM, it's WCDMA.
Well HSPA is more like GSM than it is CDMA, the only thing it has in common with CDMA is the air interface.]]> http://www.dslreports.com/forum/remark,21247505 Fri, 10 Oct 2008 17:19:29 EDT Re: GSM>CDMA 1x http://www.dslreports.com/forum/remark,21247433 NOCMan : Yeah only expect to see these speeds in cities. Backhaul issues will be immense.]]> http://www.dslreports.com/forum/remark,21247433 Fri, 10 Oct 2008 17:05:30 EDT Re: GSM>CDMA 1x http://www.dslreports.com/forum/remark,21247272 jtel : Telstra announced yesterday their HSPA update will be finished by years end. 21Mbps downloads where active now. Lord knows what kind of backhaul is necessary to maintain that with heavy traffic or what the cost will be.

I have to admit the acronyms are very confusing in these next steps of wireless evolution. ]]> http://www.dslreports.com/forum/remark,21247272 Fri, 10 Oct 2008 16:36:48 EDT Re: GSM>CDMA 1x http://www.dslreports.com/forum/remark,21247149 xenophon : Well actually HSPA is not GSM, it's WCDMA.]]> http://www.dslreports.com/forum/remark,21247149 Fri, 10 Oct 2008 16:11:44 EDT GSM>CDMA 1x http://www.dslreports.com/forum/remark,21246728 antwanp : This makes me happy. I was hoping to see a worldwide shift towards LTE in the future. Sorry CDMA 1x, you're a dead format... GSM won.
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The Perils of Living in 3-D: »www.antwanpayne.com]]> http://www.dslreports.com/forum/remark,21246728 Fri, 10 Oct 2008 14:57:06 EDT