The application of law companding to mobile wimax by fiona_messe

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www.intechopen.com
                                      WIMAX New Developments
                                      Edited by Upena D Dalal and Y P Kosta




                                      ISBN 978-953-7619-53-4
                                      Hard cover, 442 pages
                                      Publisher InTech
                                      Published online 01, December, 2009
                                      Published in print edition December, 2009


WiMAX (Worldwide Interoperability for Microwave Access) is a wireless broadband access network named by
industry group called the WiMAX forum formed in June 2001. It is Wireless MAN with IEEE 802.16 family
standards. Loosely, WiMAX is a standardized wireless version of Ethernet that enables the last mile, intended
primarily as an alternative to wire technologies (such as Cable Modems, DSL and T1/E1 links ) to provide
broadband access to customer premises. Mission of the WiMAX forum is to promote and certify compatibility
and interoperability of broadband wireless products. This book touches most of the above issues in form of 22
individuals’ papers containing research work in WiMAX domain in particular. WiMAX has two important
standards/usage models: a fixed usage model IEEE 802.16-2004 for Fixed Wireless Broadband Access
(FWBA) and a portable usage model IEEE 802.16e-2005, which is mainly concentrated on Mobile Wireless
Broadband Access (MWBA). Both are released as standards and amendments are available in form of drafts.
Higher data rate transmissions (@ 100 Mbps) are achieved in IEEE 802.16-2004 WiMAX through LOS
communications which incorporate a stationary transmitter and receiver but IEEE 802.16e supporting NLOS
communication is much complicated and little less bit rate is achieved. 2-11 GHz licensed band is the range of
frequencies with TDD and FDD supports. The book will provide a wide horizon to visualize the WiMAX
technology and its developments leading towards 4G systems. It will provide a good platform to the
researchers with clues to the innovative ideas in WiMAX domain. I wish all the best to the authors and readers
of this book in their successful research of WiMAX technology.



How to reference
In order to correctly reference this scholarly work, feel free to copy and paste the following:

Brian G Stewart and Athinarayanan Vallavaraj (2009). The Application of -Law Companding to Mobile WiMax,
WIMAX New Developments, Upena D Dalal and Y P Kosta (Ed.), ISBN: 978-953-7619-53-4, InTech, Available
from: http://www.intechopen.com/books/wimax-new-developments/the-application-of-law-companding-to-
mobile-wimax




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