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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.
Multi-carrier code-division multiple access (MC-CDMA) is a multiple access scheme used in OFDM-based telecommunication systems, allowing the system to support multiple users at the same time over same frequency band. MC-CDMA spreads each user symbol in the frequency domain.
IFAST – International Forum on ANSI-41 Standards Technology IIF – Interworking and Interoperability Function IMEI – International mobile equipment Identity IMS – IP Multimedia Subsystem IMSI – International Mobile Subscriber Identity IMSI 11 12 – Same as MNC (Mobile Network Code) IMSI S – Short IMSI, Mobile Identification Number
The Packet Data Serving Node, or PDSN, is a component of a CDMA2000 mobile network. [1] It acts as the connection point between the radio access and IP networks.This component is responsible for managing PPP sessions between the mobile provider's core IP network and the mobile station (mobile phone).
UMTS W-CDMA HSPA (HSDPA+HSUPA) 3GPP: Mobile Internet: CDMA/FDD CDMA/FDD/MIMO: 0.384 14.4: 0.384 5.76: HSDPA is widely deployed. Typical downlink rates today 2 Mbit/s, ~200 kbit/s uplink; HSPA+ downlink up to 56 Mbit/s. UMTS-TDD: 3GPP: Mobile Internet: CDMA/TDD: 16: Reported speeds according to IPWireless using 16QAM modulation similar to HSDPA ...
IMT-2000 (International Mobile Telecommunications-2000) is the global standard for third generation wireless communications as defined by the International Telecommunication Union. [1] [2] [3] In 1999 ITU approved five radio interfaces for IMT-2000 as a part of the ITU-R M.1457 Recommendation. [4] The five standards are: [5] IMT-2000 CDMA ...
CDMA2000 1X (IS-2000), also known as 1x and 1xRTT, is the core CDMA2000 wireless air interface standard.The designation "1x", meaning 1 times radio transmission technology, indicates the same radio frequency (RF) bandwidth as IS-95: a duplex pair of 1.25 MHz radio channels. 1xRTT almost doubles the capacity of IS-95 by adding 64 more traffic channels to the forward link, orthogonal to (in ...
In practice, 3GPP2 was the standardization group for CDMA2000, the set of 3G standards based on the earlier cdmaOne 2G CDMA technology. The participating associations were ARIB/TTC (Japan), China Communications Standards Association, Telecommunications Industry Association (North America) and Telecommunications Technology Association (South Korea).