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The dispersive transfer function has been derived in this paper to describe the distortions on pulse propagation in the ionosphere. As the crucial parameter in the function, the dispersive coefficient has been discussed and calculated on condition that the ionosphere is spherical stratified. Furthermore, simulation has been conducted to illustrate the low-pass filtering modulation and pulse mixing...
The IEEE 802.16 mesh network is a promising next generation wireless backbone network. One fundamental issue in IEEE 802.16 mesh networks is QoS provisioning. Although IEEE 802.16 standard has made certain efforts to address this issue, many technical problems still exist in this field. In this article, we present a detailed investigation of QoS issues in IEEE 802.16 mesh networks in order to provide...
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