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Sunday, December 27, 2015

===========WiMAX==================

===========WiMAX==================
WiMAX (Worldwide Interoperability for Microwave Access) is a family of wireless communications standards initially
 designed to provide 30 to 40 megabit-per-second data rates,with the 2011 update providing up to 1 Gbit/s for fixed stations. The name "WiMAX" was created by the WiMAX Forum,
which was formed in June 2001 to promote conformity and interoperability of the standard. The forum describes
 WiMAX as "a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL".
 IEEE 802.16m or WirelessMAN-Advanced is a candidate for the 4G, in competition with the LTE Advanced standard

====Uses=====
=>The bandwidth and range of WiMAX make it suitable for the following potential applications:
=>Providing portable mobile broadband connectivity across cities and countries through a variety of devices.
=>Providing a wireless alternative to cable and digital subscriber line (DSL) for "last mile" broadband access.
=>Providing data, telecommunications (VoIP) and IPTV services (triple play).
=>Providing a source of Internet connectivity as part of a business continuity plan.
=>Smart grids and metering.

There is no uniform global licensed spectrum for WiMAX, however the WiMAX Forum has published
 three licensed spectrum profiles: 2.3 GHz, 2.5 GHz and 3.5 GHz, in an effort to drive standardisation and decrease cost.
iMAX profiles define channel size, TDD/FDD and other necessary attributes in order to have inter-operating products.
The current fixed profiles are defined for both TDD and FDD profiles. At this point, all of the mobile profiles are TDD only. The fixed profiles have channel sizes of 3.5 MHz, 5 MHz, 7 MHz and 10 MHz. The mobile profiles are 5 MHz, 8.75 MHz and 10 MHz. (Note: the 802.16 standard allows a far wider variety of channels,
but only the above subsets are supported as WiMAX profiles.)


tutorial:laahiru fernando.

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