Title :
Cross-Layer Optimization for WiMAX Systems
Author :
Li Zhe ; Gong Ting
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
Cross-Layer design for WiMAX Systems can realize the highest usage of network resources and manage quality of service (QoS) guarantees. We present a Cross-Layer design that involves the transport layer, the data link layer and the physical layer to optimize the WiMAX resource scheduling mechanism. At the same time, we obtain the optimum number of the maximum retransmission attempts in Hybrid Automatic Repeat reQuest (HARQ) protocols ,which maximizes the spectral efficiency while maintaining the required performance such as delay and PER. Then simulation proves in physical layer the adaptive modulation and coding (AMC) used in conjunction with HARQ is the most suitable scheme for WiMAX Systems.
Keywords :
WiMax; adaptive codes; adaptive modulation; automatic repeat request; protocols; quality of service; HARQ; WiMAX resource scheduling mechanism; adaptive modulation and coding; cross-layer optimization; data link layer; hybrid automatic repeat request protocols; maximum retransmission attempts; physical layer; quality of service; transport layer; Automatic repeat request; Delay; Physical layer; Protocols; Quality of service; WiMAX;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5601185
