Optimal Offline and Competitive Online Strategies for Transmitter-Receiver Energy Harvesting

TL;DR

This paper develops optimal offline and online strategies for energy harvesting transmitter-receiver systems, minimizing transmission time with proven performance bounds for online policies.

Contribution

It introduces the first optimal offline and competitive online policies for joint transmitter-receiver energy harvesting systems.

Findings

Optimal offline transmission power and receiver ON-OFF profiles derived.

Online policy with competitive ratio less than two established.

Strategies improve energy efficiency in energy harvesting communication systems.

Abstract

Transmitter-receiver energy harvesting model is assumed, where both the transmitter and receiver are powered by random energy source. Given a fixed number of bits, the problem is to find the optimal transmission power profile at the transmitter and ON-OFF profile at the receiver to minimize the transmission time. Structure of the optimal offline strategy is derived together with an optimal offline policy. An online policy with competitive ratio of strictly less than two is also derived.