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Ongoing advances in sophisticated mobile computing technologies and wireless communications have propelled substantial research work toward designing and implementing a new breed of mobile communications systems. One of the fundamental design objectives of such systems is to ensure complete roaming ability for the mobile users. In addition, upon handoff events, the mobile users also require to be...
A novel fair mapping scheme is proposed in this paper for the IEEE 802.16 downlink sub-frame. The mapping process is critical since it allocates the users' requests into the downlink sub-frame in order to be sent to the mobile stations. One of the most noticeable issues in this area lies on the fairness aspect. Giving that the mapping process defines the order and the way that the users' requests...
Various cross-layer optimizations have been recently proposed to improve the performance of TCP in wireless networks. In this paper, we propose a dynamic OFDMA based subcarrier/power allocation which aims to constrain the achievable rate on each flow proportionally to the TCP throughput of the corresponding flow. Numerical investigations reveal that the proposed approach significantly increases fairness...
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