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GEM (for Graphics Environment Manager [2]) is a discontinued operating environment released by Digital Research in 1985. GEM is known primarily as the native graphical user interface of the Atari ST series of computers, providing a WIMP desktop. It was also available for IBM PC compatibles [3] [4] and shipped with some models from Amstrad.
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FreeGEM is the free software/open source version of GEM developed after Caldera Thin Clients released the GEM code under the terms of the GNU GPL-2.0-only free software license in April 1999. [2] Caldera Thin Clients owned the source code to GEM through Caldera 's purchase of the remaining Digital Research assets from Novell on 23 July 1996 ...
At the 2009 Burning Man festival, a larger test setup was run using a 3-sector system. [14] For the 2010 festival, an even larger 2-sector 3-carrier system was tested. At the 2011 festival, the OpenBTS project set up a 3-site network with VSAT gateway and worked in conjunction with the Voice over IP services company Voxeo to provide much of the ...
With a software upgrade and a new device compliant with Evolved EDGE (like an Evolved EDGE smartphone) for the user, these data rates can be boosted to speeds approaching 1 Mbit/s (i.e. 98.6 kbit/s per timeslot for 32QAM). Many service providers may not invest in a completely new technology like 3G networks. [9]
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.
System Architecture Evolution (SAE) is the core network architecture of mobile communications protocol group 3GPP's LTE wireless communication standard.. SAE is the evolution of the GPRS Core Network, but with a simplified architecture; an all-IP Network (AIPN); support for higher throughput and lower latency radio access networks (RANs); and support for, and mobility between, multiple ...
It is a subset of General Packet Radio Service (GPRS) on the GSM network and improves upon it offering speeds close to 3G technology, hence the name 2.75G. It is also recognized as part of the International Mobile Telecommunications - 2000 (IMT-2000) standard.