Please use this identifier to cite or link to this item: https://doi.org/10.1109/ISIT.2012.6284704
Title: Optimal save-then-transmit protocol for energy harvesting wireless transmitters
Authors: Luo, S.
Zhang, R. 
Lim, T.J. 
Issue Date: 2012
Source: Luo, S.,Zhang, R.,Lim, T.J. (2012). Optimal save-then-transmit protocol for energy harvesting wireless transmitters. IEEE International Symposium on Information Theory - Proceedings : 955-959. ScholarBank@NUS Repository. https://doi.org/10.1109/ISIT.2012.6284704
Abstract: In this paper, the design of a wireless communication device relying exclusively on energy harvesting is considered. Due to the inability of rechargeable energy sources to charge and discharge at the same time, a constraint we term the energy half-duplex constraint, two rechargeable energy storage devices (ESDs) are assumed so that at any given time, there is always one ESD being recharged. The energy harvesting rate is a random variable that is constant over the time interval of interest. A save-then-transmit (ST) protocol is introduced, in which a fraction of time ρ (dubbed the save ratio) is devoted exclusively to energy harvesting, with the remaining fraction 1 - ρ used for data transmission. The ratio of the energy obtainable from an ESD to the energy harvested is termed the ESD efficiency, η. We address the practical case of the secondary ESD being a battery with η < 1, and the main ESD being a super-capacitor with η = 1. The optimal save-ratio that minimizes outage probability is derived, from which some useful design guidelines are drawn. Numerical results are provided to validate our proposed study. © 2012 IEEE.
Source Title: IEEE International Symposium on Information Theory - Proceedings
URI: http://scholarbank.nus.edu.sg/handle/10635/71301
ISBN: 9781467325790
DOI: 10.1109/ISIT.2012.6284704
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

18
checked on Dec 11, 2017

Page view(s)

21
checked on Dec 9, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.