CDMA Full Form is Code Division Multiple Access. CDMA is a digital technology of cellular systems, which uses the techniques of spread spectrum. CDMA does not employ specific frequency to every user and hence is different from GSM. In simple terms, CDMA is a method of channel access and is used by several radio communication technologies.
CDMA is a typical example for multiple accesses. In this technique, many transmitters send simultaneous information over one communication channel. This enables many users to share the same band of frequencies or bandwidth at the same time. The spread-spectrum technique ensures there is no interference between users. Thus CDMA is able to provide consistent and clear data and voice quality communications when compared to other mobile technologies.