On-Off Transmission Policy for Wireless Powered Communication with Energy Storage
Rania Morsi, Diomidis S. Michalopoulos, Robert Schober

TL;DR
This paper analyzes an energy harvesting wireless node's on-off transmission policy, considering practical limitations like unknown energy profiles and buffer imperfections, providing insights into energy distribution and communication performance.
Contribution
It introduces a Markov chain-based analysis of the energy buffer dynamics under a simple transmission policy, accounting for buffer imperfections and circuit power consumption.
Findings
Limiting distribution of energy buffer derived in closed form.
Diversity order remains unaffected by finite buffer capacity.
Optimal transmit power is below average harvested power and increases with buffer size.
Abstract
In this paper, we consider an energy harvesting (EH) node which harvests energy from a radio frequency (RF) signal broadcasted by an access point (AP) in the downlink (DL). The node stores the harvested energy in an energy buffer and uses the stored energy to transmit data to the AP in the uplink (UL). We consider a simple transmission policy, which accounts for the fact that, in practice, the EH node may not have knowledge of the EH profile nor of the UL channel state information. In particular, in each time slot, the EH node transmits with either a constant desired power or remains silent if not enough energy is available in its energy buffer. For this simple policy, we use the theory of discrete-time continuous-state Markov chains to analyze the limiting distribution of the stored energy for finite- and infinite-size energy buffers. Moreover, we take into account imperfections of the…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
