OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Optimization of WiMax modulation scheme with a cross layer erasure code

Zhang, Lei and Sénac, Patrick and Boreli, Roksana and Diaz, Michel Optimization of WiMax modulation scheme with a cross layer erasure code. (2009) In: WOWMOM 2009 - World of Wireless, Mobile and Multimedia Networks, 15-19 June 2009, Kos, Greece .

[img] (Document in English)

PDF (Author's version) - Depositor and staff only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader

Official URL: http://www.ics.forth.gr/wowmom09/


WIMAX (Worldwide Interoperability for Microwave Access) is a promising new networking technology that potentially offers high speed and wide area wireless access services that complement consistently the 3G and WiFi access networks capabilities. The standard proposes an adaptive modulation scheme which allows WiMax nodes to communicate from various modulation coding schemes according to the link quality. However, the standard does not define a detailed link adaptation algorithm and currently, the most largely used modulation adaptation technique is based on a channel quality lookup table. We argue that this method is not able to make the best adaptation decisions and delivers a sub-optimal goodput in numerous communication contexts. In this paper, we propose a novel cross layer based modulation adaptation mechanism which incorporates the use of adaptive erasure code with the physical layer information to significantly improve the goodput and transmission efficiency. Simulation results show that our proposal adapts more efficiently to real environments and achieves a significant gain on the goodput delivered to mobile nodes.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Australian National University - ANU (AUSTRALIA)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > National ICT Australia - NICTA (AUSTRALIA)
Other partners > University of New South Wales - UNSW (AUSTRALIA)
Laboratory name:
Deposited On:12 Mar 2009 14:27

Repository Staff Only: item control page