what is cdma

Code Division Multiple Access (CDMA) is a channel access method used in various radio communication technologies, including second-generation (2G) and third-generation (3G) wireless communications. It is an example of multiple access, allowing several transmitters to send information simultaneously over a single communication channel. CDMA enables several users to share a band of frequencies, and it is used as the access method in many mobile phone standards. It employs spread spectrum technology and a special coding scheme, where each transmitter is assigned a code, to minimize interference between users. CDMA is a spread-spectrum multiple-access technique that optimizes the use of available bandwidth and is known for its robust and efficient nature