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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Dynamic Power Control for Throughput Maximization in Hybrid Energy Harvesting Node
verfasst von : Didi Liu, Jiming Lin, Junyi Wang, Hongbing Qiu, Yibin Chen
Erschienen in: Communications and Networking
Verlag: Springer International Publishing
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Abstract
In this paper, we consider a wireless communication node with hybrid energy harvesting (EH) sources which results in great difficulty in obtaining the statistical knowledge of joint EH process. In addition, the wireless channel fluctuates randomly due to fading. Our goal is, under this condition, to develop a dynamic power control policy for the transmitter such that the time average throughput of the system is maximized over an infinite horizon, taking into account the circuit energy consumption and inefficiency of the rechargeable battery. Such a dynamic power control problem is formulated as a stochastic network optimization problem. The problem is solved by utilizing Lyapunov optimization and an efficient on-line algorithm with quite low complexity is obtained. Simulation results illustrate that the proposed algorithm has the same performance as the optimal one with giving statistical knowledge of the stochastic processes.