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What is GSM?
Originally called Groupe Sp¨¦cial Mobile, it is commonly known as the Global System for Mobile Communications.
It is a cellular network that operates in four different frequency ranges: 850MHz, 900MHz, 1,800MHz and 1,900MHz. Scandinavian countries use 400MHz and 450MHz frequency bands.
The network consists of the base station subsystem, the network and switching subsystem, and the GPRS core network (an optional part that enables packet-based data transmission.
total search1493 articles
2011-01-24 Spreadtrum announces 40nm low-power baseband chip
Spreadtrum Communications has migrated to the Cadence Silicon Realization flow and taped out its first 40nm low-power chip, according to a Cadence Design Systems Inc.'s press release.
2008-03-25 700MHz plum goes to Verizon, AT&T
Verizon Wireless and AT&T won most of the spectrum in the U.S. Federal Communications Commission's 700MHz auction, according to FCC Chairman Kevin Martin.
2006-08-16 6th ESC-Taiwan gathers world's leading embedded tool vendors
Design engineers in Taiwan will be treated to an array of leading-edge technologies as the world's major embedded tool suppliers gather to showcase their products at the 6th Embedded Systems Conference-Taiwan.
2014-11-19 64bit 5-mode 4G LTE SoC aimed at tablets, smartphones
The PXA1936 from Marvell supports up to 1.5GHz clock speed, 1080p display, and video encoding and decoding, and flaunts improved image processor to support 13-16MP cameras.
2011-01-19 4G platform raises the bar in data upload speeds
RF Micro Devices Inc. has announced PowerSmart power platforms, a new series that achieved HSPA+ 4G data upload speeds during independent product testing.
2012-02-10 42Mb/s DC-HSPA+ expands, more being deployed
DSA stated that 483 operators have committed to deploy HSPA systems in 181 countries while more than 41 percent of HSPA operators have commercially launched HSPA+.
2011-01-21 40nm baseband processor unveiled at China forum
Spreadtrum Communications Inc. unveils the SC8800G, which the company claims as the world's "first" 40nm low power TD-HSPA/TD-SCDMA multi-mode communication baseband processor.
2010-03-26 3G/4G Synthesizer covers 375MHz to 5.6GHz
Skyworks Solutions Inc. has launched high-performance broadband synthesizers spanning ultrawide frequency ranges from 375 MHz to 5.6GHz.
2009-05-27 3G router powers high-bandwidth apps in harsh setups
From Digi International comes the Digi Connect WAN 3G IA, a 3G Wireless WAN router for secure primary and backup connectivity to remote devices in severe environments.
2007-09-17 3G power amps to use revised CMOS
Acco Semiconductor believes it has found a way to create low-cost CMOS power amplifiers for 3G cellphones that can operate with the power efficiency and robustness of GaAs Pas.
2009-12-02 3G phone springs from 2G design overhaul
Released in Q1 08, Samsung's SGH-J750 tells a less-fleeting tale of OEM sourcing decisions, ASIC development strategies and foot-in-the-door approaches behind the cellphone market.
2009-05-22 3G fever to hit Vietnam
Vietnam is set to become one of the largest mobile markets in Asia, with an estimated 120 million subscribers by the end of 2014, on a par with Japan's current subscriber base, according to a VietNamNet Bridge report.
2009-01-21 3G dongles, datacards see promising uptake in Asia
According to Frost & Sullivan, as Asia's 3G subscriber base is expected to top 564 million, 3G dongle services and datacards see a promising uptake to complement the mobile broadband offerings in the region.
2006-04-03 3.5G wireless tester gets 1xEV-DO phone option
Willtek Communications' existing 4400 Mobile Phone Tester Series is now suitable for use by engineers at manufacturing sites, as well as by technicians at field repair centers.
2010-06-23 24-core DSP delivers over 36 GMACs at <55mW
Boosting the processing power of its DSP chips, Octasic Inc. is increasing the number of Opus DSP cores from 15 to 24.
2010-05-21 2.5A SWIFT converter packs 200m? high-side FET
Texas Instruments Inc. is rolling out a 2.5A step-down SWIFT converter to support input voltages up to 60V.
2010-05-04 1GSps DAC supports multi-antenna wireless standards
ADI has released a 16bit high-speed quad DAC provides support for multi-antenna wireless communications standards requiring the large bandwidths.
2006-10-17 19M low cost handsets to ship this year, says report
Nineteen million ultra low cost handsets will ship this year, with Motorola continuing to dominate the sector with an almost 80 percent share, according to Strategy Analytics.
2013-02-13 16-band ET RF front-end targets LTE handsets
The NCT-L1200 ET from Nujira is a multi-mode, multi-band (MMMB) ET reference design that claims to overcome the energy efficiency and frequency band challenges by mobile operators and OEMs.
2013-06-05 14bit ADC at 250MSPS supports up to 125MHz
The high-density ADS4449 enables receiver systems to support up to 125MHz of instantaneous bandwidth in extremely small forms such as MIMO base stations and munitions guidance.
2009-10-12 1.2GSps DAC supports up to 400MHz bandwidth
ADI offers a dual-channel, 1.2GSps, 16bit DAC that supports the high data rates and complex modulation schemes required for multicarrier wireless and broadband communications equipment.
2002-03-05 'Prescott,' 'Banias' processors to debut in 2003
The company has announced a 2003 release for its next-generation desktop processor code-named "Prescott." This was announced, along with several other upcoming products, in the recently concluded Intel Developer Forum in San Francisco.
2005-03-30 'Highest performing' RF VGAs?
The MAX2056 and MAX2057 devices from Maxim are touted by the company to be the industry's highest performing RF variable gain amplifiers in monolithic form.
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