CDMA Introduction: What is CDMA
CDMA Introduction
CDMA is a primarily an air interface or radio transmission technology
and access technique that is based on the direct sequence spread
spectrum technology
Error control coding, spreading of spectrum, soft handover and strict power control play a very important role in the design of CDMA based systems.
CDMA air interface is significantly differnet to TDMA but the core
fixed network infastucture that supports the wireless interface is very
similar to the structure of the core GSM system.
IS-95 is the North American digital cellular standard that employes CDMA as
the access method as well the air-interface.The technology was
developed by Qualcomm in about 1990 and is also known as cdmaOne
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