Editing Difference Between CDMA And GSM

CDMA and GSM are common words which anybody would have heard . Both  are wireless technology standards , used in radio communications. CDMA and GSM both are multiple access technologies .



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    CDMA(Code Division Multiple Access)                          |  GSM(Global System for Mobile Communications ) 
 CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies .                                                                                                                 | GSM  is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe protocols for second-generation (2G) digital cellular networks 
 Practically CDMA is a handset based standard . For CDMA , a CDMA handset is required . The phone number is bound to the handset.                                     | In GSM , only SIM is bound to phone number .
Each CDMA phone has a specific code which identifies it . One CDMA network covers all CDMA devices within it's range .                                                              | In case of GSM , each SIM is served by a network tower in which the sim is currently present . As location changes , Network tower also changes .
 In CDMA customer information is put in a phone .        |  In GSM customer information is put on a sim card.
In CDMA , each call-signal  is encoded with a unique key and all the calls are  transmitted  at once .The combined signal is divided into corresponding individual calls at the receivers end using  the unique key .  |  In GSM  calls are converted into digital data and assigned a time slot on the signal . A buzzing sound is sometimes produced  due to this pulsing division of the signal . 	
											   
 											   
												   
												   
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[[Category:Engineering|Difference Between CDMA And GSM]]
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 CDMA and GSM are common words which anybody would have heard . Both  are wireless technology standards , used in radio communications. CDMA and GSM both are multiple access technologies .
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   In CDMA customer information is put in a phone .        |  In GSM customer information is put on a sim card.
 In CDMA , each call-signal  is encoded with a unique key and all the calls are  transmitted  at once .The combined signal is divided into corresponding individual calls at the receivers end using  the unique key .  |  In GSM  calls are converted into digital data and assigned a time slot on the signal . A buzzing sound is sometimes produced  due to this pulsing division of the signal .
-Frequency 850MHz           |  Frequency 850 MHz - 1900 MHz .
-It consumes less power .| It consumes more power .
-It has a market share of approx 80 % | It has a market share of approx 20%.