OFDM for Wireless Multimedia Communications
OFDM for Wireless Multimedia Communications
Multiuser OFDM with adaptive subcarrier, bit, and power allocation
IEEE Journal on Selected Areas in Communications
A new OFDMA scheduler for delay-sensitive traffic based on hopfield neural networks
EURASIP Journal on Wireless Communications and Networking - Multicarrier Systems
An adaptive cross-layer design for multiservice scheduling in OFDMA based mobile WiMAX systems
Computer Communications
Scheduling in IEEE 802.16e Mobile WiMAX networks: key issues and a survey
IEEE Journal on Selected Areas in Communications - Special issue on broadband access networks: Architectures and protocols
QoS scheduling for heterogeneous traffic in OFDMA-based wireless systems
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Low complexity resource allocation algorithm for IEEE 802.16 OFDMA system
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Video streaming performance under proportional fair scheduling
IEEE Journal on Selected Areas in Communications
Realtime traffic scheduling for missed deadlines minimization in point-to-multipoint OFDMA systems
Proceedings of the 5th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Quality-driven scheduling for Long-Term Evolution system
International Journal of Mobile Communications
A fast and efficient algorithm to exploit multi-user diversity in IEEE 802.16 BandAMC
Computer Networks: The International Journal of Computer and Telecommunications Networking
Power-aware opportunistic downlink scheduling in IEEE 802.16 wireless networks
Computer Communications
Efficient resource allocation algorithm for OFDMA systems with delay constraint
Computer Communications
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OFDMA is an attractive multiple access technique for packet-based mobile broadband wireless access for beyond 3G and 4G systems. Radio resource allocation in OFDMA can exploit multiuser diversity to increase system capacity by implementing opportunistic scheduling techniques. This paper presents a new opportunistic scheduling scheme for OFDMA-based wireless multimedia networks. We focus the scheduling algorithm on the class of delay-sensitive packets that belong to interactive applications such as telephony and video streaming. We divide the scheduling decision into two sub-problems: the OFDMA subcarrier allocation and subsequently the subcarrier assignment. Both the subcarrier allocation and assignment algorithms exploit multiuser diversity and are designed to provide fairness with respect to the realizable throughput per user, packet dropping ratios and packet delay distributions. We investigate various performance aspects of the proposed scheduling algorithm using actual MPEG-4 traffic traces under different system loading and requested deadline values. The results show the superiority of the proposed scheduling scheme and its excellent performance with respect to throughput, packet dropping, and delay distributions.