CDMA is short for Code Division Multiple Access, a digital cellular technology that uses the Spread Spectrum ways of communication. The other communications are GSM which uses another method called as TDMA (Time Division Multiple Access). The principle of CDMA is not assigning a specific frequency to each user, but to allow the entire channel of users to benefit from the entire available spectrum. The individual conversation or communication is encoded with a pseudo random digital sequence. This means that the entire channel is encoded and much safer and faster. CDMA provides better capacity for voice and data transmissions than GSM. Therefore more number of subscribers can connect at any given time. It is also the same platform on which 3G technologies are built on. CDMA was first used for Military purposes during the Second World War by the English to foil German attempts at jamming transmissions. Now CDMA is widely used in many countries all over the world. The encryption of the data transmissions is also very confidential and safe. The safety factor makes the CDMA have an edge over GSM and other technologies. CDMA spectrum is wide spread which minimises the traffic and allows a congestion free network. The network management also is much easier than GSM. Qualcomm created the communication chips for CDMA chips and later commercialized it all over. Countries like America, India, Korea, and other major nations use CDMA widely.
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