Energy Harvesting Communications Using Dual Alternating Batteries

01/11/2018
by   Rajshekhar Vishweshwar Bhat, et al.
0

We consider an energy harvesting transmitter equipped with two batteries having finite storage capacities, communicating over an additive white Gaussian channel. The work is motivated by an observation that many practical batteries, when repeatedly charged after being partially discharged, suffer from degradation in the usable capacity. The capacity can be recovered by completely discharging the battery before charging it fully again. Hence, in this work, we impose the constraint that a battery must be charged (discharged) only after it is fully discharged (charged). Our goal is to maximize the longterm average throughput with non-causal and causal knowledge of the energy arrivals, which we assume to be Bernoulli. We propose two sub-optimal policies and obtain an upper bound on the performance gap (G) from the optimal long-term average throughput that is achieved with infinite capacity batteries. We find that G remains constant as the amount of energy harvested per arrival increases. Numerically, we also find that G decreases with the battery capacity faster than the inverse of the square root of the battery capacity for a specific energy arrival parameters.

READ FULL TEXT
POST COMMENT

Comments

There are no comments yet.

Authors

page 1

page 2

page 3

page 4

08/01/2018

Power Management Policies for AWGN Channels with Slow-Varying Harvested Energy

In this paper, we study power management (PM) policies for an Energy Har...
04/28/2019

The Optimal Power Control Policy for an Energy Harvesting System with Look-Ahead: Bernoulli Energy Arrivals

We study power control for an energy harvesting communication system wit...
03/25/2021

On Optimal Power Control for Energy Harvesting Communications with Lookahead

Consider the problem of power control for an energy harvesting communica...
02/13/2018

Achieving the Age-Energy Tradeoff with a Finite-Battery Energy Harvesting Source

We study the problem of minimizing the time-average expected Age of Info...
09/17/2019

On the Optimality of the Greedy Policy for Battery Limited Energy Harvesting Communications

Consider a battery limited energy harvesting communication system with o...
12/04/2019

A Maximin Optimal Online Power Control Policy for Energy Harvesting Communications

A general theory of online power control for discrete-time battery limit...
05/08/2018

Non-Asymptotic Achievable Rates for Gaussian Energy-Harvesting Channels: Best-Effort and Save-and-Transmit

An additive white Gaussian noise (AWGN) energy-harvesting (EH) channel i...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.