Throughput Maximization for Energy Harvesting Receivers

Konferenz: WSA 2013 - 17th International ITG Workshop on Smart Antennas
13.03.2013 - 14.03.2013 in Stuttgart, Deutschland

Tagungsband: WSA 2013

Seiten: 8Sprache: EnglischTyp: PDF

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Bai, Qing; Mezghani, Amine; Nossek, Josef A. (Institute for Circuit Theory and Signal Processing, Technische Universität München, Munich, Germany)

We investigate in this work the optimal control strategies of a receiver that is powered by the ambient energy it harvests over time. Two scenarios are mainly considered, the single-antenna system with non-fading channel, and the multiantenna system with fading channel. The throughput achieved on the limited time slot [ 0, T ] is maximized with respect to the resolution of the A/D converter and the transmission bandwidth/ number of antennas. To this end, the receiver is assumed to have full, non-causal knowledge about the energy arriving process, and the transmitter is assumed to be in full cooperation with the receiver. Convexity of the formulated optimizations is discussed, and the optimal control theory is applied for finding the optimal state trajectories of the system. Numerical simulations are performed for the analysis of the optimal control variables, as well as for the comparison of throughput achieved with different channel gains and optimizations.