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TDMA & CDMA Technologies

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What is TDMA?

Time Division Multiple Access (TDMA): a digital wireless telephony transmission technique. TDMA allocates each user a different time slot on a given frequency. TDMA divides each cellular channel into three time slots in order to increase the amount of data that can be carried.

TDMA technology was more popular in Europe, Japan and Asian countries, where as CDMA is widely used in North and South America. But now a days both techologies are very popular throughtout of the world.

Advantages of TDMA:

Disadvantages of TDMA:

What is CDMA ?

Code Division Multiple Access (CDMA: a digital wireless technology that uses spread-spectrum techniques. CDMA does not assign a specific frequency to each user. Instead, every channel uses the full available spectrum. Individual conversations are encoded with a pseudo-random digital sequence. CDMA consistently provides better capacity for voice and data communications than other commercial mobile technologies, allowing more subscribers to connect at any given time, and it is the common platform on which 3G technologies are built.

Advantages of CDMA:

Disadvantages of CDMA:

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