Communication over a time correlated channel with an energy harvesting transmitter

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Title: Communication over a time correlated channel with an energy harvesting transmitter
Authors: Abad, MSH
Gunduz, D
Ercetin, O
Item Type: Conference Paper
Abstract: In this work, communication over a time-correlated point-to-point wireless channel is studied for an energy harvesting (EH) transmitter. In this model, we take into account the time and energy cost of acquiring channel state information. At the beginning of the time slot, the EH transmitter, has to choose among three possible actions: i) deferring the transmission to save its energy for future use, ii) transmitting without sensing, and iii) sensing the channel before transmission. At each time slot, the transmitter chooses one of the three possible actions to maximize the total expected discounted number of bits transmitted over an infinite time horizon. This problem can be formulated as a partially observable Markov decision process (POMDP) which is then converted to an ordinary MDP by introducing a belief on the channel state, and the optimal policy is shown to exhibit a threshold behavior on the belief state, with battery-dependent threshold values. Optimal threshold values and corresponding optimal performance are characterized through numerical simulations, and it is shown that having the sensing action and intelligently using it to track the channel state improves the achievable long-term throughput significantly.
Issue Date: 16-Nov-2017
Date of Acceptance: 28-Aug-2017
ISSN: 2154-0225
Publisher: IEEE
Start Page: 331
End Page: 336
Journal / Book Title: Wireless Communication Systems (ISWCS), 2017 International Symposium on
Copyright Statement: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor/Funder: British Council (UK)
Commission of the European Communities
Funder's Grant Number: 173605884
Conference Name: International Symposium on Wireless Communication Systems (ISWCS)
Publication Status: Published
Start Date: 2017-08-28
Finish Date: 2017-08-31
Conference Place: Bologna, Italy
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering

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