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Wimax

Abstract
WiMAX is a standards-based technology enabling the deliverance of wireless broadband access as an alternative to cable and DSL. WiMAX provides set, roaming, transportable, and mobile wireless broadband connectivity without the need for direct line-of-sight with a base station. The Institute of Electrical and Electronics Engineers (IEEE) website, the WiMAX Forum website and other internet resources were used to gather information for the paper. The paper describes aspects of the technology, future trends, regulatory issues, and global implications surrounding WiMAX. A list of companies and their involvement with WiMAX is also provided.

WiMAX
WiMAX is a standards-based technology enabling the deliverance of wireless broadband access as an alternative to cable and DSL. WiMAX provides set, roaming, transportable, and mobile wireless broadband connectivity without the need for direct line-of-sight with a base station.
WiMax is an interoperability standard for broadband wireless communication. The technical design portion of the standard defines Media Access Control, and the Physical layer. The Media Access Control (MAC) portion of the standard describes the use of scheduling to make sure that each client is allocated a time slot with the base station. The MAC also describes the use of QoS (Quality of Service) and authentication. The physical layer portion of the standard describes a frequency spectrum from 2 GHz to 66 GHz. The 2 GHz to 11 GHz is intended for non-line of sight usage, and the 10 GHz – 66 GHz range is intended for line of site usage. The physical layer portion of the standard also describes the methods used to communicate with the base stations. Time-Division Multiplexing (TDM) is used by the base station to communicate with the clients, and Time-Division Multiple Access (TDMA) is used to communicate back to the base stations. The standard also supports Time-Division Duplexing (TDD) and Frequency-Division Duplexing (FDD) for burst...