Topic: HElp! Whats The Difference between CDMA and GSM Technology

CDMA means code division multiple access.On this type of network a specific frequency is assigned to each subscriber within a certain region.While GSM does not have an ascribed frequency,it frequency changes from one base station to another.

CDMA means code MULTIPLE ACCESS, each user (mobile station) is assigned a unique code(walsh code) this unique codes distinguishes each user in the radio channel or radio enviroment, its advantage is you have a lot of MS using the same frequency channel simultaneously while gsm uses FDMA frequency div mult access and timeslots in TDMA time div mult access.this makes GSM only able to have 0-7...(8 ms or subscribers at a time) while CDMA can have betwn 128 to 1024 .. in the forward direction, thats incoming call, while 64 in reverse direction,..outgoing call(uplink and downlink)
i hope i didnt confuse you?..i am sure i didnt!!!

cheers babies!



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