| | Encyclopedia: Time division multiple access (Site not responding. Last check: ) |
 | | In the GSM system, the synchronisation of the mobile phones is achieved by sending timing offset commands from the base station which instructs the mobile phone to transmit earlier or later. |
 | | Code division multiple access (CDMA) is a method of multiple access that does not divide up the channel by time (as in TDMA), or frequency (as in FDMA), but instead encodes data with a certain code (PN Sequences) associated with a channel and uses the constructive interference properties of the... |
 | | The only country to continue pursuing TD-SCDMA (time division synchronous CDMA) is mainland China, because the government does not want to pay patent royalties to Qualcomm of the USA or licensing fees to the mainly European UMTS consortium. |
| www.nationmaster.com /encyclopedia/Time-division-multiple-access (1799 words) |