Sunday, May 11, 2008

CDMA

CDMA-THIS STANDS FOR CODE DIVISION MULTIPLE ACCESS.
CDMA is also one of the feature in mobile phones.CDMA works under the direct sequence spread spectrum technique.Actually this is used to have a secured communication.here the transmitter is given a code. This code is very much secured in such a way that no people except the transmitter and receiver can view the data. Others cannot view the page.
Actually all the data will run over a same physical channel.This channel have the high capacity to withstand a load. Correlation ,Interruptions are checked out properly that no two different users wont correlate with one another.Here only people working with the same code can communicate With one another.It also uses the multiplexing techniques such as synchronous or asynchronous.
Hopping method namely fast or slow frequency hopping is also performed.Starting with CDMA2000 now it was developed upto third generation using many protocols.CDMA ONE is also one of the version.

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