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Cross-layer Power and Rate Adaptation Techniques for Wireless Networks   Ashok Karmokar

Cross-layer Power and Rate Adaptation Techniques for Wireless Networks

256 страниц. 2011 год.
LAP Lambert Academic Publishing
Packet scheduling using variable power and variable rate is very important techniques in wireless networks due to limited bandwidth resources and increasing demand for high data rates. Time-varying incoming traffic and random channel gain make the scheduling decision very challenging. Current packet adaptation techniques deal with the single layer optimizations in each layer separately, which results in suboptimal performance when system-level performance parameters are considered. This book discusses both the optimal and the reduced-complexity heuristic cross-layer adaptation techniques over time-varying correlated fading channels. Due to the inherent dynamic nature of the packet scheduling, the problem are formulated from the cross-layer optimization viewpoint using Markov decision processes framework, by considering both the physical and the data link layers optimization objectives. The objective is to jointly maximize throughput, and minimize power and buffering delay while...
 
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