WCDMA
This is a link about WCDMA.
From Qualcomm
http://www.cdmatech.com/resources/pdf/wcdma_asynch_w ... »
WCDMA = Wideband Code Division Multiple Access or Wideband CDMA.. So just because they are now using GSM towers to place CDMA networks over them don't mean they Are GSM. But GSM phones will be able to use them like they would use GSM tower without CDMA.
But in time GSM phone will no longer being made.
And CDMA will be every where.
Learn from AT&T and LOL Join IN.
From Qualcomm
http://www.cdmatech.com/resources/pdf/wcdma_asynch_w ... »
WCDMA = Wideband Code Division Multiple Access or Wideband CDMA.. So just because they are now using GSM towers to place CDMA networks over them don't mean they Are GSM. But GSM phones will be able to use them like they would use GSM tower without CDMA.
But in time GSM phone will no longer being made.
And CDMA will be every where.
Learn from AT&T and LOL Join IN.
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GSM
Today, GSM stands for "Global System for Mobile Communications" (a rather ambitious moniker). It actually came from "Groupe Spécial Mobile," which was a study group formed in 1982 to figure out what to do about the problem being created by European and Scandinavian countries each developing their own systems for mobile phones, none of which were particularly compatible with the others.
What the new GSM community settled on was a kind of time-sharing technology (TDMA) which allows several callers to share the same bit of frequency spectrum by taking turns, a few microseconds at a time. Pieces of each call are interspersed with pieces of other calls, like shuffling a deck of cards, and reassembled on the other end. It all happens fast...
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Today, GSM stands for "Global System for Mobile Communications" (a rather ambitious moniker). It actually came from "Groupe Spécial Mobile," which was a study group formed in 1982 to figure out what to do about the problem being created by European and Scandinavian countries each developing their own systems for mobile phones, none of which were particularly compatible with the others.
What the new GSM community settled on was a kind of time-sharing technology (TDMA) which allows several callers to share the same bit of frequency spectrum by taking turns, a few microseconds at a time. Pieces of each call are interspersed with pieces of other calls, like shuffling a deck of cards, and reassembled on the other end. It all happens fast...
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http://www.att.com/news/item/0 ,1847,13067,00.html said:...
The foregoing contains "forward-looking statements" which are based on management's beliefs as well as on a number of assumptions concerning future events made by and information currently available to management. Readers are cautioned not to put undue reliance on such forward-looking statements, which are not a guarantee of performance and are subject to a number of uncertainties and other factors, many of which are outside AT&T's control, that could cause actual results to differ materially from such statements. These risk factors include the impact of increasing competition, continued capacity oversupply, regulatory uncertainty and the effects of technological sub
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