Performance evaluation of TCP/RLP protocol stack over CDMA wireless link
Wireless Networks - Special issue on wireless multimedia networking
TCP Performance Analysis of CDMA Systems with RLP and MAC Layer Retransmissions
MASCOTS '02 Proceedings of the 10th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems
Analysis and performance evaluation of the OFDM-based metropolitan area network IEEE 802.16
Computer Networks: The International Journal of Computer and Telecommunications Networking - Selected papers from the European wireless 2004 conference
Broadband wireless access with WiMax/802.16: current performance benchmarks and future potential
IEEE Communications Magazine
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The flexibility of WiMAX framework offers new dimensions for cross-layer optimization and can be exploited to optimize the application performance. This article focuses on identifiers that have direct impact on Quality of Service (QoS)and effect of such identifiers is evaluated through computer simulation using OPNET Modeler 14.5 Wireless Suite. In this paper we have used advanced WiMAX features such as Adaptive Modulation and Coding (AMC), Automatic Repeat Request(ARQ) and Hybrid-ARQ to tune the WiMAX network MAC Layer such that its adaptation improves both capacity and delay (thus optimize the performance). ARQ is treated as higher layer to HARQ. HARQ gives up after maximum retransmissions. HARQ performs fast retransmissions and ARQ takes over in cases HARQ fails after multiple retransmissions. This gives an added layer of protection to data. HARQ is proved to be most suitable (when used with aggressive modulation and coding) for WiMAX due to its hybrid nature as it takes into account both the MAC and link layer. Using ARQ in conjunction with HARQ gives slight improvement in BLER (Block Error Rate) but at the expense of high UL frame utilization.