Communication Through a Large Reflecting Surface With Phase Errors

By Mihai-Alin Badiu, Justin P. Coon. IEEE Wireless Communications Letters, 2019

323 citations recorded by the source corpus.

Assume the communication between a source and a destination is supported by a large reflecting surface (LRS), which consists of an array of reflector elements with adjustable reflection phases. By knowing the phase shifts induced by the composite propagation channels through the LRS, the phases of the reflectors can be configured such that the signals combine coherently at the destination, which improves the communication performance. However, perfect phase estimation or high-precision configuration of the reflection phases is unfeasible. We study the transmission through an LRS with phase errors that have a generic distribution. We show that the LRS-based composite channel is equivalent to a direct channel with Nakagami scalar fading. This equivalent representation allows for theoretical analysis of the performance and can help the system designer study the interplay between performance, the distribution of phase errors, and the number of reflectors. Numerical evaluation of the error probability for a limited number of reflectors confirms the theoretical prediction and shows that the performance is remarkably robust against the phase errors.

Subfields: Aerospace Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/7b65fed5a5b20edb42bfd82efa3ce0a5fcf92e4c

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Citations in the corpus

Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How It Works, State of Research, and The Road Ahead (2020, background): “In [119], the authors study the transmission through an RIS in the presence of phase errors.”
Wireless Communications Through Reconfigurable Intelligent Surfaces (2019, background): “The effect of erroneous reflector phases on the error performance is investigated recently as well [78].”
Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How it Works, State of Research, and Road Ahead (2020, background): “In [119], the authors study the transmission through an”
Toward Smart Wireless Communications via Intelligent Reflecting Surfaces: A Contemporary Survey (2019, methodology): “The authors in [132] focus on the phase error in channel estimation, which brings the ambiguity in the IRS’s phase tuning.”