TY - GEN
T1 - Optimal power policy for energy harvesting transmitters with inefficient energy storage
AU - Tutuncuoglu, Kaya
AU - Yener, Aylin
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - An energy harvesting transmitter with an inefficient energy storage device, i.e., battery or capacitor, is considered, where a fraction of the stored energy is lost in the process. An optimal transmission policy maximizing the average rate within a finite time horizon is found for a given energy harvesting scenario. In contrast to previous results for optimal power allocations with energy harvesting transmitters, it is observed that storage losses encourage instantaneous consumption of harvested energy without storage for moderate harvest rates. It is also shown that this policy converges to the known constant power transmission policies when storage efficiency goes to unity. Based on the optimal offline policy, an online policy based on constant charging and discharging thresholds is proposed. The performance of the optimal offline and proposed online algorithms are simulated along with naive transmission policies, and the behavior of the algorithms for various storage efficiencies is discussed.
AB - An energy harvesting transmitter with an inefficient energy storage device, i.e., battery or capacitor, is considered, where a fraction of the stored energy is lost in the process. An optimal transmission policy maximizing the average rate within a finite time horizon is found for a given energy harvesting scenario. In contrast to previous results for optimal power allocations with energy harvesting transmitters, it is observed that storage losses encourage instantaneous consumption of harvested energy without storage for moderate harvest rates. It is also shown that this policy converges to the known constant power transmission policies when storage efficiency goes to unity. Based on the optimal offline policy, an online policy based on constant charging and discharging thresholds is proposed. The performance of the optimal offline and proposed online algorithms are simulated along with naive transmission policies, and the behavior of the algorithms for various storage efficiencies is discussed.
UR - http://www.scopus.com/inward/record.url?scp=84868598307&partnerID=8YFLogxK
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U2 - 10.1109/CISS.2012.6310730
DO - 10.1109/CISS.2012.6310730
M3 - Conference contribution
AN - SCOPUS:84868598307
SN - 9781467331401
T3 - 2012 46th Annual Conference on Information Sciences and Systems, CISS 2012
BT - 2012 46th Annual Conference on Information Sciences and Systems, CISS 2012
T2 - 2012 46th Annual Conference on Information Sciences and Systems, CISS 2012
Y2 - 21 March 2012 through 23 March 2012
ER -