TY - GEN
T1 - Beam Focusing for Multi-User MIMO Communications with Dynamic Metasurface Antennas
AU - Zhang, Haiyang
AU - Shlezinger, Nir
AU - Guidi, Francesco
AU - Dardari, Davide
AU - Imani, Mohammadreza F.
AU - Eldar, Yonina C.
N1 - Funding Information:
This project has received funding from the Benoziyo Endowment Fund for the Advancement of Science, the Estate of Olga Klein – Astrachan, the European Union’s H2020 research and innovation program under grant No. 646804-ERC-COG-BNYQ, and from the Israel Science Foundation under grant No. 0100101. H. Zhang and Y. C. Eldar are with the Faculty of Math and CS, WeizmannInstitute of Science, Rehovot, Israel (e-mail: {haiyang.zhang; yonina.eldar}@weizmann.ac.il). N. Shlezinger is with the School of ECE, Ben-Gurion University, Beer-Sheva, Israel (e-mail: [email protected]). F. Guidi is with the National Research Council of Italy, Institute of Electronics, Computer and TelecommunicationEngineering,Bologna, Italy (e-mail: [email protected]). D. Dardari is with the Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi” - DEI-CNIT, University of Bologna, Cesena, Italy (e-mail:[email protected]). M. F. Imani is with the School of ECEE, Arizona State University, Tempe, AZ (email: [email protected]).
Publisher Copyright:
©2021 IEEE.
PY - 2021/5/13
Y1 - 2021/5/13
N2 - Recently, dynamic metasurface antennas (DMAs) have emerged as a promising technology for realizing massive multipleinput multiple-output (MIMO) wireless systems. The usage of large arrays, jointly with higher transmitted frequencies, often results in the communicating devices operating in the near-field (Fresnel) region, thus requiring different considerations compared to traditional systems, assumed to operate in the far-field regime. In this paper, we study the potential of beam focusing, feasible in near-field operation, for multiuser MIMO systems, where the base station is equipped with a DMA. We introduce a mathematical model for DMA-based near-field MIMO communications. Then, we characterize the sum-rate maximization problem of the considered system, and propose an efficient solution to jointly design the DMA weights and digital precoding vector. Simulation results show that our design generates focused beams such that users residing at the same angular direction can communicate reliably without interfering, which is not achievable using conventional far-field beam steering.
AB - Recently, dynamic metasurface antennas (DMAs) have emerged as a promising technology for realizing massive multipleinput multiple-output (MIMO) wireless systems. The usage of large arrays, jointly with higher transmitted frequencies, often results in the communicating devices operating in the near-field (Fresnel) region, thus requiring different considerations compared to traditional systems, assumed to operate in the far-field regime. In this paper, we study the potential of beam focusing, feasible in near-field operation, for multiuser MIMO systems, where the base station is equipped with a DMA. We introduce a mathematical model for DMA-based near-field MIMO communications. Then, we characterize the sum-rate maximization problem of the considered system, and propose an efficient solution to jointly design the DMA weights and digital precoding vector. Simulation results show that our design generates focused beams such that users residing at the same angular direction can communicate reliably without interfering, which is not achievable using conventional far-field beam steering.
KW - Beam focusing
KW - Dynamic metasurface antennas
UR - http://www.scopus.com/inward/record.url?scp=85108203706&partnerID=8YFLogxK
U2 - 10.1109/ICASSP39728.2021.9413746
DO - 10.1109/ICASSP39728.2021.9413746
M3 - Conference contribution
SN - 9781728176055
T3 - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing
SP - 4780
EP - 4784
BT - IEEE International Conference on Acoustics, Speech and Signal Processing
T2 - 2021 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2021
Y2 - 6 June 2021 through 11 June 2021
ER -