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Voice data via IP over the CDMA2000 1x EV-DO network. ... CDMA2000 1xRTT, EV-DO Rel. 0 800 Oct 2000: Jul 2020 [154] [149] [155] CDMA2000 1xEV-DO was also referred to ...
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 ...
CDMA frequency bands or frequency ranges are the cellular frequencies ... 2.5 GHz IMT-2000 Extension: 2500 - 2570: ... List of CDMA2000 networks; 3GPP2; Cellular ...
The Qualcomm standard IS-2000, known as CDMA2000, is used by several mobile phone companies, including the Globalstar network. [nb 1] The UMTS 3G mobile phone standard, which uses W-CDMA. [nb 2] CDMA has been used in the OmniTRACS satellite system for transportation logistics.
In 3G, the most prevalent technology was UMTS with CDMA-2000 in close contention. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM.
Voice: CDMA2000 1xRTT, 1X Advanced; Data: CDMA2000 1xEV-DO (Evolution-Data Optimized): Ultra Mobile Broadband (UMB) A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1981/1982. Each generation is characterized by new frequency bands, higher data rates and non–backward ...
Category for various information associated with Code Division Multiple Access (CDMA) technologies. Pages in category "Code division multiple access" The following 23 pages are in this category, out of 23 total.
also known as CDMA2000, the successor to 2G CDMA ; IMT-2000 CDMA TDD. also known as TD-SCDMA; IMT-2000 TDMA Single Carrier. also known as EDGE, an intermediate 2.5G technology; IMT-2000 FDMA/TDMA. also known as DECT; To meet the IMT-2000 standards, a system must provide peak data rates of at 384 kbit/s for mobile stations and 2 Mbit/s for fixed ...