Self-Tuning RIS Controller for Vehicular Communications: a Hardware Perspective

Shahabuddin, Shahriar, Sakib, Md. Salman, Malik, Hassan and Albreem, Mahmoud A. (2025) Self-Tuning RIS Controller for Vehicular Communications: a Hardware Perspective. In: IEEE International Symposium on Circuits and Systems. UNSPECIFIED. (In Press)

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Abstract

Reconfigurable intelligent surfaces (RIS) can reflect an incoming signal toward a target location to enhance the received signal quality. In most studies, it is assumed that the base station (BS) provides configuration data to an RIS controller. However, for a passive RIS with a high number of elements, this data transmission from the BS can introduce significant delays. This challenge is especially pronounced in vehicular communications, where reflection coefficients must be updated even for a few millimeters of movement. To overcome this limitation, we propose a self-tuning RIS controller that independently calculates the reflection coefficients with minimal input from the BS. Our RIS controller leverages the user’s location information to compute the reflection coefficients in three steps: channel gain calculation, steering vector calculation, and optimal phase control. A pipelined architecture is developed to support these steps in real-time. The proposed VLSI architecture is implemented on an Artix-7 XC7A100TCSG324-1 FPGA to calculate reflection coefficients for a vehicle moving at a 100 kmh speed.

Item Type:	Book Section
Faculty \ School:	Faculty of Science > School of Computing Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Cyber Intelligence and Networks Faculty of Science > Research Groups > Data Science and AI
Depositing User:	LivePure Connector
Date Deposited:	11 Jul 2025 11:30
Last Modified:	11 Jul 2025 11:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/99885
DOI:

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