University of Oulu

J. He, H. Wymeersch, T. Sanguanpuak, O. Silven and M. Juntti, "Adaptive Beamforming Design for mmWave RIS-Aided Joint Localization and Communication," 2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), Seoul, Korea (South), 2020, pp. 1-6, doi: 10.1109/WCNCW48565.2020.9124848

Adaptive beamforming design for mmWave RIS-aided joint localization and communication

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Author: He, Jiguang1; Wymeersch, Henk2; Sanguanpuak, Tachporn1;
Organizations: 1Centre for Wireless Communications, FI-90014, University of Oulu, Finland
2Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
3Center for Machine Vision and Signal Analysis, FI-90014, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.5 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2020-06-25


The concept of reconfigurable intelligent surface (RIS) has been proposed to change the propagation of electromagnetic waves, e.g., reflection, diffraction, and refraction. To accomplish this goal, the phase values of the discrete RIS units need to be optimized. In this paper, we consider RIS-aided millimeter-wave (mmWave) multiple-input multiple-output (MIMO) systems for both accurate positioning and high data-rate transmission. We propose an adaptive phase shifter design based on hierarchical codebooks and feedback from the mobile station (MS). The benefit of the scheme lies in that the RIS does not require deployment of any active sensors and baseband processing units. During the update process of phase shifters, the combining vector at the MS is sequentially refined. Simulation results show the performance improvement of the proposed algorithm over the random phase design scheme, in terms of both positioning accuracy and data rate. Moreover, the performance converges to that of the exhaustive search scheme even in the low signal-to-noise ratio regime.

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ISBN: 978-1-7281-5178-6
ISBN Print: 978-1-7281-5179-3
Pages: 1 - 6
DOI: 10.1109/WCNCW48565.2020.9124848
Host publication: 2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), 6-9 April 2020, Seoul, Korea (South)
Conference: IEEE Wireless Communications and Networking Conference Workshops
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work has been performed in the framework of the IIoT Connectivity for Mechanical Systems (ICONICAL), funded by the Academy of Finland. This work is also partially supported by the Academy of Finland 6Genesis Flagship (grant 318927) and Swedish Research Council (grant no. 2018-03701).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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