Prediction-Based Cross-Layer Resource Allocation For Wireless Multi-Hop Networks With Outdated Csi
IEICE TRANSACTIONS ON COMMUNICATIONS(2014)
摘要
The rapid variation of wireless channels and feedback delay make the available channel state information (CSI) outdated in dynamic wireless multi-hop networks, which significantly degrades the accuracy of cross-layer resource allocation. To deal with this problem, a cross-layer resource allocation scheme is proposed for wireless multi-hop networks by taking the outdated CSI into account and basing compensation on the results of channel prediction. The cross-layer resource allocation is formulated as a network utility maximization problem, which jointly considers congestion control, channel allocation, power control, scheduling and routing with the compensated CSI. Based on a dual decomposition approach, the problem is solved in a distributed manner. Simulation results show that the proposed algorithm can reasonably allocate the resources, and significantly improve the throughput and energy efficiency in the network.
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关键词
wireless multi-hop networks, outdated CSI, channel prediction, cross-layer resource allocation, distributed algorithm
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