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What is the diffidence between fdma, tdma and cdma?

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تم إضافة السؤال من قبل Ayman Tarabain , Project Manager , ICAD
تاريخ النشر: 2013/10/04
Ahmed Wagdy
من قبل Ahmed Wagdy , Senior Service Engineer , International Trading And Telecommunication

FDMA: its stands for Frequency Devision multiplixer access which means devide the Baandwidth (TX,RX) into multiple frequency bands.

TDMA: its stands for Time devision Multiple access whice means deviding each frequency bands into multiple time slots such as (S0, S1, S2,.....ETC). but all of these time slots works at the same freq band.

CDMA: stands for code Devision Muliple access wich gives each user special code wether it was in the time or freq  another other user.

 

FDMA Graph. 

 

TDMA Graph: 

 

CDMA Graph: 

 

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