Throughput maximization with channel acquisition in energy harvesting systems

Subhash Lakshminarayana, Tony Q.S. Quek

研究成果: Conference contribution

摘要

We consider the problem of maximizing the time average throughput in energy harvesting networks with dynamic channel state acquisition. Previous works on energy harvesting systems do not account for the energy consumed to acquire the channel state information(CSI). However, when the nodes have a limited capacity batteries and the energy available in the battery is time varying, it becomes crucial to account for the energy spent in acquiring the CSI. In such a scenario, the available energy in the battery must be optimally divided between CSI acquisition and transmission. We model the energy harvesting battery as an energy queue and use the technique of Lyapunov optimization combined with the idea of weight perturbation to jointly optimize the channel probing and transmission decisions. Since the optimization problem corresponding to the optimal CSI acquisition decision in each time slot is a combinatorial problem, we provide a low-complexity scheme to solve this in the special case ON-OFF fading channels with binary power allocation scheme, and prove that this algorithm is optimal. Finally, we provide numerical results and show that when the mean rate of the harvested energy is low, it becomes crucial to account for the energy consumed in acquiring the CSI.

原文English
主出版物標題2014 IEEE International Conference on Communications, ICC 2014
發行者IEEE Computer Society
頁面2430-2435
頁數6
ISBN(列印)9781479920037
DOIs
出版狀態Published - 2014
事件2014 1st IEEE International Conference on Communications, ICC 2014 - Sydney, NSW, Australia
持續時間: 2014 六月 102014 六月 14

出版系列

名字2014 IEEE International Conference on Communications, ICC 2014

Other

Other2014 1st IEEE International Conference on Communications, ICC 2014
國家/地區Australia
城市Sydney, NSW
期間14-06-1014-06-14

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信

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