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Energy harvesting by a reconfigurable surface

Published on:

6 November 2023

Primary Category:

Signal Processing

Paper Authors:

Morteza Tavana,

Meysam Masoudi,

Emil Björnson

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Key Details

Proposes RIS energy harvesting without transmitter coordination

Presents sequential phase optimization algorithms

Proves optimality for continuous phase shifts

Achieves near-optimal solution for discrete phase shifts

Outperforms benchmark random phase method

AI generated summary

Energy harvesting by a reconfigurable surface

This paper proposes methods for a reconfigurable intelligent surface (RIS) to harvest ambient radio frequency energy without coordination with the source. The RIS sequentially adjusts its element phases based on received power measurements to maximize harvested energy. The proposed algorithm converges to the optimal solution for continuous phase shifts. For discrete phase shifts, it achieves near-optimal performance and outperforms a random phase method.

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