Title :
Optimal power control for source and relay in energy harvesting relay networks
Author :
Yan Xia ; Hongbin Chen ; Lisheng Fan ; Fenliang Dai
Author_Institution :
Sch. of Inf. & Commun., Guilin Univ. of Electron. Technol., Guilin, China
Abstract :
In this paper, optimal power control for source and relay in an energy harvesting relay network is studied. The relay network includes a source node, an amplify-and-forward relay node, and a destination node. The source and relay are able to harvest energy from nature, and have their own data to transmit. The source and relay adjust their transmission powers according to the amount of harvested energy and the data transmission requirement. The goal of power adaptation is to maximize the total throughput while satisfying the transmission power constraints of the source and relay, as well as the energy causality constraint. An optimization problem is formulated and its solution is obtained. Simulation results demonstrate the optimal transmission powers under various energy harvesting processes.
Keywords :
amplify and forward communication; data communication; energy harvesting; optimal control; optimisation; power control; relay networks (telecommunication); telecommunication power management; amplify-and-forward relay node; data transmission; destination node; energy causality constraint; energy harvesting relay network; optimal power control; optimization problem; source node; transmission power constraint; Batteries; Energy harvesting; Relays; Throughput; Wireless communication; Wireless sensor networks; Energy harvesting; amplify-andforward relaying; power control; throughput maximization; wireless networks;
Conference_Titel :
Communications and Networking in China (CHINACOM), 2013 8th International ICST Conference on
Conference_Location :
Guilin
DOI :
10.1109/ChinaCom.2013.6694730
