Wednesday, December 29, 2010

WiMAX: Technology for Broadband Wireless Access

What is BWA

􀀁 Base on Recommendation ITU-R F.1399, Broadband Wireless Access (BWA) connection capabilities that are higher than the primary rate.
􀀁 Primary Rate: Up to 1.544 Mbps service on a T-1 or up to 2.048 Mbps service on an E1 line
􀀁 Berdasarkan pada Keputusan Dirjen Postel RI, BWA adalh jaringan akses nirkabel pita lebar yang memiliki kemampuan untuk transfer data melebihi 1.5 Mbps dan atau menggunakan total bandwith minimal 1 MHz.
􀀁 Wireless: fixed, nomadic, mobile.

WiMAX forum
􀀁 WiMAX: Worldwide Interoperability for Microwave Access
􀀁 An industry-led, non-profit corporation with more than 400 members, including leading equipment
manufacturers, service providers and systems integrators
􀀁 Certifies compatibility and interoperability of broadband wireless products
􀀁 Supports the industry-wide acceptance of the IEEE 802.16 and ETSI HiperMAN wireless MAN standards
􀀁 WiMAX Forum promotes reasonable royalties through a standards-based solution
What is WiMAX
􀀁 Wireless Metropolitan Area Networks (MAN)
􀀁 Offering Broadband Wireless Access
􀀁 Last/first mile wireless broadband connectivity
􀀁 Video, Data, Voice and Backhaul
􀀁 Rural, Urban and Suburban
􀀁 Non-Line-Of-Sight Fixed, Nomadic, and Mobile wireless broadband connectivity
IEEE 802.16 Standards in WiMAX

􀀁 Frequency range:
􀀁 2 to 11 GHz, NLOS licensed and unlicensed (WiMAX)
􀀁 10 to 66 GHz, LOS
􀀁 IEEE 802.16-2004 was released in 2004
􀀁 Fixed WiMAX
􀀁 IEEE 802.16e-2005 wasreleased in 2006
􀀁 Mobile WiMAX
WiMAX Technology Base
􀀁 Orthogonal Frequency Division Multiplexing (OFDM) technology
􀀁 Subchannelization: OFDMA (A=Access)
􀀁 Adaptive modulation
􀀁 Error correction techniques (channel coding)
􀀁 Hybrid-ARQ
􀀁 Transmit and receive diversity (MIMO)
􀀁 Power control

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