Queueing networks with blocking
Queueing networks with blocking
IEEE Transactions on Information Theory
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
Secure collision-free frequency hopping for OFDMA-based wireless networks
EURASIP Journal on Advances in Signal Processing - Special issue on dynamic spectrum access for wireless networking
Adaptive modulation and coding techniques for OFDMA systems
IEEE Transactions on Wireless Communications
Quality of activation (QoA) for dynamic service flows in IEEE 802.16 networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Performance of dynamic service addition in mobile WiMAX networks
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
Efficient downlink scheduling with power boosting in mobile IEEE 802.16 networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Power-aware opportunistic downlink scheduling in IEEE 802.16 wireless networks
Computer Communications
Mobile WiMAX Bandwidth Reservation Thresholds: A Heuristic Approach
International Journal of Wireless Networks and Broadband Technologies
A New WiMAX/Wi-Fi Interoperability Model and Its Performance Evaluation
Wireless Personal Communications: An International Journal
Performance Model of a WIMAX 2.0 All-IP 4G System
Wireless Personal Communications: An International Journal
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In this paper, we study the performance of multi-cell OFDMA WiMAX systems, in both downlink and uplink. We calculate analytically the number of collisions when the number of users in each cell is known. We then calculate the QoS indicators (e.g., blocking rates, download time and bit error rates) taking into account the physical layer conditions (modulation, propagation and MIMO), the MAC layer techniques (HARQ and radio resource management algorithms) and the traffic characteristics, in a cross-layer approach. We finally evaluate the impact of using adaptive modulation and coding on the overall performance of the system. This analysis allows us to calculate the Erlang capacity of a WiMAX system. Our numerical applications then show how to choose the best admission control and modulation schemes that extend the Erlang capacity region.