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CDMA means Code Division Multiple Access.
it's a way to have many users sharing one media (air for example, since CDMA is used in GSM communication)
Principle: each users uses a "spreading code" to cypher its data using usually a "XOR" algorithm with a code.
"1" XOR "1100" => "0011"
"0" XOR "1100" => "1100"
In order to be able to recovers the original signal, all users have to use "orthogonal codes" (cross-corelation = 0), these codes are usually from a Walsh Matrix (see Wikipedia for more details)
The receiver processes the corelation of the signal with all the sender's codes. The result which is the most relevant is said to be the original data. (see Wikipedia for more details on CDMA)
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Will CDMA sim will work in WCDMA mobile?
There is no such thing as a CDMA SIM card.CDMA is a technology which doesnt use SIM cards.And WCDMA is evolved from gsm and uses SIM cards for 3g.
Which company discovered CDMA technology?
Raytheon
What is the technology behind CDMA and gsm?
tdma and fdma
Is CDMA better or gsm to be used in egypt?
does cdma work in egypt
Which companies use CDMA technology?
Qualcomm, Boost Mobile, MetroPCS, Leap Wireless International Inc., Net 10, Sprint, Verizon, Cricket, and Alltel use CDMA technology.
What are the advantages of using CDMA for a cellular network?
CDMA technology uses spread spectrum concept thereby giving users unique code to de-spread the information being sent to them. so CDMA is secure and occupies a large bandwidth of information compared to GSM technology.
Can you insert mts sim in nokia?
no mts is 1600mhz cdma but nokia 2112 has only 800mhz cdma technology you can check also
Is it possible to take an i phone or any other phone with another company and use it with Verizon wireless?
Not an iPhone because an iPhone uses different technology than Verizon. Any phone with a cdma receiver should work on Verizon Not an iPhone because an iPhone uses different technology than Verizon. Any phone with a cdma receiver should work on Verizon
What is CDMA repeater?
A CDMA repeater is a device that extends the signal range for cell phone providers that use the CDMA technology. CDMA (Code Division Multiple Access) is one of the technologies cell phone companies use for their phone service. More information on CDMA is available here: http://en.wikipedia.org/wiki/CDMA
What are advantages of using CDMA for a cellular network?
CDMA technology uses spread spectrum concept thereby giving users unique code to de-spread the information being sent to them. so CDMA is secure and occupies a large bandwidth of information compared to GSM technology.
How do you unlock an Alltel Motorola V710 to program Telus?
Alltel phones run on CDMA technology, and there currently is no unlocking solution for CDMA phones.
What is the most striking difference between GSM and CDMA technology?
Hand off
