| | Re: NEWS: GSM-HSPA captures 72% of cellular market in Western Hemisphere
On Thu, 08 Oct 2009 18:08:34 -0700, SMS <email@example.com>
wrote in <firstname.lastname@example.org>:
>Mark Crispin wrote:
>> The difference is that the GSM world was forced to switch their
>> underlying technology to CDMA in 3G.
>They weren't forced to switch to CDMA, they had no choice but to switch
>to CDMA. There was no 3G GSM technology available given the available
>spectrum and the expected bandwidth requirements. Even W-CDMA has not
>been able to keep up with the bandwidth that iPhone users are demanding.
HSPA is actually an evolution of UMTS, itself an evolution of GSM.
LTE is likewise an evolution of UMTS, supporting both
Frequency Division Duplexing and Time Division Duplexing.
Time Division Duplexing is essentially TDMA on steroids.
None of that has anything to do with cdmaOne or CDMA2000,
which are different technologies that are dying.
If the iPhone is really so impressive,
why do iFans keep making excuses for it?