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CDMA is analogous to the last example where people speaking the same language can understand each other, but other languages are perceived as noise and rejected. Similarly, in radio CDMA, each group of users is given a shared code. Many codes occupy the same channel, but only users associated with a particular code can communicate.
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.
CDMA service suspended starting from 31 October 2017. BSNL India: CDMA2000 1xRTT, EV-DO Rev. A 800 Mar 2005: Mar 2016 [82] [83] [84] MTS India: CDMA2000 1xRTT, EV-DO Rev. B 800 Sep 2003: Nov 2017 [85] [86] [87] RCOM India: CDMA2000 1xRTT, EV-DO Rev. A 800 May 2003: Jun 2016 [88] [89] Tata Docomo India: CDMA2000 1xRTT, EV-DO Rev. B 800 Nov 2002 ...
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 ...
CDG – CDMA Development Group CDMA – Code Division Multiple Access CDR – Call Detail Record Cell site. CIBER – Cellular Intercarrier Billing Exchange Roamer Cibernet. CHAP – Challenge- Handshake Authentication Protocol aka (HDR – High Data Rate) Clearing. Clearinghouse. CLI – Calling Line Identification – See Caller ID
CDMA frequency bands or frequency ranges are the cellular frequencies designated by the ITU for the operation of cdmaOne and CDMA2000 mobile phones and other mobile ...
Soft handover or soft handoff refers to a feature used by the CDMA and W-CDMA standards, [1] [2] where a cell phone is simultaneously connected to two or more cells (or cell sectors) during a call. If the sectors are from the same physical cell site (a sectorised site), it is referred to as softer handoff .
A system identification number (SID) is broadcast by one or more base stations to identify a cellular network in a certain area (usually contiguous). It is globally unique within AMPS, TDMA or CDMA networks (the first two systems are essentially obsolete).