OFDM for Wireless Multimedia Communications
OFDM for Wireless Multimedia Communications
Wireless OFDM Systems: How to Make Them Work?
Wireless OFDM Systems: How to Make Them Work?
Broadband wireless access solutions based on OFDM access in IEEE 802.16
IEEE Communications Magazine
MAC Layer Concepts to Support Space Division Multiple Access in OFDM based IEEE 802.16
Wireless Personal Communications: An International Journal
Performance Evaluation of the IEEE 802.16 MAC for QoS Support
IEEE Transactions on Mobile Computing
A survey on emerging broadband wireless access technologies
Computer Networks: The International Journal of Computer and Telecommunications Networking
Bandwidth Allocation with Half-Duplex Stations in IEEE 802.16 Wireless Networks
IEEE Transactions on Mobile Computing
Dynamic resource allocation architecture for IEEE802.16e: design and performance analysis
Mobile Networks and Applications
Impact of bandwidth request schemes for Best-Effort traffic in IEEE 802.16 networks
Computer Communications
An adaptive cross-layer design for multiservice scheduling in OFDMA based mobile WiMAX systems
Computer Communications
An IEEE 802.16 WiMAX module for the NS-3 simulator
Proceedings of the 2nd International Conference on Simulation Tools and Techniques
CNSR '09 Proceedings of the 2009 Seventh Annual Communication Networks and Services Research Conference
A fair opportunistic access scheme for multiuser OFDM wireless networks
EURASIP Journal on Wireless Communications and Networking - Special issue on fairness in radio resource management for wireless networks
NGI'09 Proceedings of the 5th Euro-NGI conference on Next Generation Internet networks
Fair traffic scheduling for WiMAX systems
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
WiMax quality-of-service estimations and measurement
Computer Communications
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Wireless last mile technology is becoming a challenging competitor to conventional wired last mile access systems like DSL and cable modems or even fiber-optic cables. The Institute of Electrical and Electronics Engineers has developed a standard for fixed broadband wireless access systems namely IEEE 802.16. Its OFDM mode targets frequency bands below 11 GHz.This paper gives an overview of the OFDM-based transmission mode of the IEEE 802.16 standard. The medium access control (MAC) and the physical layer are described in detail. Especially the MAC frame structure is elaborated. An analytical performance evaluation of an example scenario is performed which results in overall system performance measures. Especially the interaction of fragmentation and padding of OFDM symbols and its effect on the system capacity is evaluated. Furthermore, different MAC layer configurations with different levels of robustness are analyzed. Optional features to resist challenging channel conditions are outlined. Their trade off, i.e., a reduced MAC layer capacity is pointed out. It is shown that the system can be optimized while maintaining the necessary robustness against environmental challenges. A prototypical IEEE 802.16 protocol stack including a sophisticated channel model has been implemented. By means of this stochastic event-driven computer simulator, downlink and uplink delay as well as throughput evaluation is performed. Thus, performance results based on meaningful MAC configuration examples are provided. Simulative and analytical results are compared.