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General Information - 

Code Division Multiple Access (CDMA)

A spread spectrum wireless telecommunications digital cellular phone technology. 

The signal is broken down into small chunks and each chunk is transmitted over a different frequency. This makes the signal more secure.

The CDMA standard defines three modes 1) Multi-Carrier, 2) Direct Spread, and 3) Time Division Duplex. It operates with ANSI-41 and GSM-MAP networks.

CDMA2000, a third-generation wireless technology, has been submitted to the International Telecommunication Union. It is based on the IS-95/CDMA-One standard

The IS-95 CDMA standard was developed by Qualcomm Inc.

The two CDMA standards are

• TIA/EIA/IS-95A - Cellular ( 849-984 MHz ) -
• ANSI J-STD-008 - PCS ( 1850-1990 MHz ) -

Links - 

• cdg, 

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