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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 ...
GSM-450 450: 450.6 – 457.6: 460.6 – 467.6 ... Some of the CDMA networks have since upgraded from ... Dual-band phones can cover GSM networks in pairs such as 900 ...
In Russia and some other countries, local carriers received licenses for 450 MHz frequency to provide CDMA mobile coverage area. Many GSM phones support three bands (900/1,800/1,900 MHz or 850/1,800/1,900 MHz) or four bands (850/900/1,800/1,900 MHz), and are usually referred to as tri-band and quad-band phones, or world phones; with such a ...
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.
The Mobira Cityman 150, Nokia's NMT-900 mobile phone from 1989 (left), compared to the dual-band GSM Nokia 1100 phone from 2003. [1]NMT (Nordic Mobile Telephony) is an automatic cellular phone system specified by Nordic telecommunications administrations and opened for service on 1 October 1981.
Skylink (Russian: Скайлинк) is a mobile LTE 450 MHz (formerly CDMA-450 MHz) operator in Russia.Licensed territories of SkyLink include 76 entities of Russia, CDMA-450 and UMTS-1900/2100 licenses in 65 regions, CDMA-450/2000 licenses in 3 regions, GSM-1800 licenses in 45 regions and a GSM-900 license in 1.
The wideband services part of the SMR band was called ESMR (Enhanced SMR). The new band plan allowed Sprint Corporation to deploy CDMA and LTE technologies on this band. The transition to the new band plan is still ongoing as of August 2016 although it's reaching its final stages. [7]
NMT-450: Unknown: Car Phone ... CDMA: Qualcomm MSM6000: Bar: None: ... Nokia 6136 UMA is the first mobile phone to include Unlicensed Mobile Access.
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