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2007
IEEE

AMC-Aware QoS Proposal for OFDMA-Based IEEE802.16 WiMAX Systems

9 years 18 days ago
AMC-Aware QoS Proposal for OFDMA-Based IEEE802.16 WiMAX Systems
— OFDMA-based IEEE802.16 implements Adaptive Modulation and Coding (AMC) which results in a different bit rate for each user depending on its position in the cell as well as the radio condition it experiences; users away from the base station experience lower throughput. We hence propose in this paper a new QoS solution that compensates the degradation in modulation by a higher number of sub-carriers so as to maintain the bit rate of streaming flows at a constant level throughout the whole coverage area. This proposal is modeled analytically in a dynamic user configuration, where users of both types, streaming and elastic, remain in the system for a finite duration. And this in multi-cell environment and for different frequency reuse schemes.
Chadi Tarhini, Tijani Chahed
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where GLOBECOM
Authors Chadi Tarhini, Tijani Chahed
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