Two-Phase Channel Estimation for UPA-Type RIS-Aided Multi-User mmWave Systems with Reduced Pilot Overhead and Error Propagation

Peng Z, Pan C, Zhou G, Ren H (2023)

Publication Type: Conference contribution

Publication year: 2023

Journal

2012 IEEE International Conference on Communications (ICC) Institute of Electrical and Electronics Engineers (IEEE)

Publisher: Institute of Electrical and Electronics Engineers Inc.

Book Volume: 2023-May

Pages Range: 597-602

Conference Proceedings Title: IEEE International Conference on Communications

Event location: Rome, ITA IT

ISBN: 9781538674628

DOI: 10.1109/ICC45041.2023.10278897

Abstract

In this paper, an efficient two-phase channel estimation scheme with reduced pilot overhead and error propagation is proposed for a uniform planar array (UPA)-type reconfigurable intelligent surface (RIS)-aided multi-user (MU) millimeter wave (mmWave) system. In Phase I, based on the carefully designed RIS phase shift matrix, all users jointly transmit the pilot signals to estimate the correlation factors between different propagation paths of the common RIS-base station (BS) channel, which facilitates a significant MU diversity gain. Then, in Phase II, with the constructed ambiguous RIS-BS channel composed of the correlation factors obtained in the previous phase, each user independently sends a few pilots to estimate their own ambiguous user-RIS channel so as to obtain the entire cascaded channel. Simulation results validate that the proposed algorithm outperforms the existing algorithms in terms of both pilot overhead and estimation accuracy, and that its estimation performance improves as the number of users increases.

Authors with CRIS profile

Gui Zhou Lehrstuhl für Digitale Übertragung

Involved external institutions

University of British Columbia CA Canada (CA) Southeast University / 东南大学 CN China (CN)

How to cite

APA:

Peng, Z., Pan, C., Zhou, G., & Ren, H. (2023). Two-Phase Channel Estimation for UPA-Type RIS-Aided Multi-User mmWave Systems with Reduced Pilot Overhead and Error Propagation. In Michele Zorzi, Meixia Tao, Walid Saad (Eds.), IEEE International Conference on Communications (pp. 597-602). Rome, ITA, IT: Institute of Electrical and Electronics Engineers Inc..

MLA:

Peng, Zhendong, et al. "Two-Phase Channel Estimation for UPA-Type RIS-Aided Multi-User mmWave Systems with Reduced Pilot Overhead and Error Propagation." Proceedings of the 2023 IEEE International Conference on Communications, ICC 2023, Rome, ITA Ed. Michele Zorzi, Meixia Tao, Walid Saad, Institute of Electrical and Electronics Engineers Inc., 2023. 597-602.

BibTeX: Download