Techs & Trends
WCDMA/CDMA
What are the Technical differences between WCDMA and CDMA. ive had people tell me that its a combo of Time division type techs and code division techs.
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Read this whitepaper and you'll get the general idea.
http://www.cdg.org/technology/3g/resource/3gwhitepap ... »
Speedywalk
"It ain't broke, it just needs duct tape!"
http://www.cdg.org/technology/3g/resource/3gwhitepap ... »
Speedywalk
"It ain't broke, it just needs duct tape!"
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speedywalk said:
Read this whitepaper and you'll get the general idea.
http://www.cdg.org/technology/3g/resource/3gwhitepap ... »
Speedywalk
"It ain't broke, it just needs duct tape!"
You could also visit the UMTS forum.
Here's their take on it.
http://www.umts-forum.org/servlet/dycon/ztumts/umts/ ... »
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WCDMA (UMTS) and "CDMA" (IS-95 and CDMA2000) both use a type of CDMA (code-division multiple access) technology.
CDMA-based technologies are different from TDMA-based technologies in how they allow multiple users to share the same frequency band. With TDMA, (time-division,) users basically take turns. But very quick turns, like in microseconds. With CDMA, many users transmit on the same frequency at the same time, and voodoo science 😉 allows them to not interfere (or rather, interfere in a "good way".)
WCDMA and CDMA both use the CDMA method, which is generally more efficient.
But that's about all they have in common. The two standards include many layers and many parts that all work together to make mobile voice and data possi...
(continues)
CDMA-based technologies are different from TDMA-based technologies in how they allow multiple users to share the same frequency band. With TDMA, (time-division,) users basically take turns. But very quick turns, like in microseconds. With CDMA, many users transmit on the same frequency at the same time, and voodoo science 😉 allows them to not interfere (or rather, interfere in a "good way".)
WCDMA and CDMA both use the CDMA method, which is generally more efficient.
But that's about all they have in common. The two standards include many layers and many parts that all work together to make mobile voice and data possi...
(continues)
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