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2. Code-division multiple access - Wikipedia

   en.wikipedia.org/wiki/Code-division_multiple_access

   Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel.

3. Multi-carrier code-division multiple access - Wikipedia

   en.wikipedia.org/wiki/Multi-carrier_code...

   An alternative form of multi-carrier CDMA, called MC-DS-CDMA or MC/DS-CDMA, performs spreading in the time domain, rather than in the frequency domain in the case of MC-CDMA — for the special case where there is only one carrier, this reverts to standard DS-CDMA. For the case of MC-DS-CDMA where OFDM is used as the modulation scheme, the data ...

4. Direct-sequence spread spectrum - Wikipedia

   en.wikipedia.org/wiki/Direct-sequence_spread...

   DS-CDMA (Direct-Sequence Code Division Multiple Access) is a multiple access scheme based on DSSS, by spreading the signals from/to different users with different codes. It is the most widely used type of CDMA. Cordless phones operating in the 900 MHz, 2.4 GHz and 5.8 GHz bands; IEEE 802.11b 2.4 GHz Wi-Fi, and its predecessor 802.11-1999.

5. cdmaOne - Wikipedia

   en.wikipedia.org/wiki/CdmaOne

   cdmaOne network structure. The IS-95 standards describe an air interface, [1] a set of protocols used between mobile units and the network. IS-95 is widely described as a three-layer stack, where L1 corresponds to the physical layer, L2 refers to the Media Access Control (MAC) and Link-Access Control (LAC) sublayers, and L3 to the call-processing state machine.

6. Carrier-sense multiple access with collision avoidance

   en.wikipedia.org/wiki/Carrier-sense_multiple...

   Carrier-sense multiple access with collision avoidance (CSMA/CA) in computer networking, is a network multiple access method in which carrier sensing is used, but nodes attempt to avoid collisions by beginning transmission only after the channel is sensed to be "idle".

7. Time-division multiple access - Wikipedia

   en.wikipedia.org/wiki/Time-division_multiple_access

   CDMA's "cell breathing" characteristic, where a terminal on the boundary of two congested cells will be unable to receive a clear signal, can often negate this advantage during peak periods. A disadvantage of TDMA systems is that they create interference at a frequency that is directly connected to the time slot length.