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Achieving Beamfocusing via Two Separated Uniform Linear Arrays
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Communication Systems, CoS.ORCID iD: 0000-0001-7594-2367
TOBB ETU, Department of Electrical-Electronics Engineering, Ankara, Turkiye.
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Communication Systems, CoS.ORCID iD: 0000-0002-5954-434X
2024 (English)In: Conference Record of the 58th Asilomar Conference on Signals, Systems and Computers, ACSSC 2024, Institute of Electrical and Electronics Engineers (IEEE) , 2024, p. 168-172Conference paper, Published paper (Refereed)
Abstract [en]

This paper investigates coordinated beamforming using a modular linear array (MLA), composed of a pair of physically separated uniform linear arrays (ULAs), treated as sub-arrays. We focus on how such setups can give rise to near-field effects in 6G networks without requiring many antennas. Unlike conventional far-field beamforming, near-field beamforming enables simultaneous data service to multiple users at different distances in the same angular direction, offering significant multiplexing gains. We present a detailed analysis, including analytical expressions of the beamwidth and beamdepth for the MLA. Our findings reveal that using the MLA approach, we can remove approximately 36% of the antennas in the ULA while achieving the same level of beamfocusing.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2024. p. 168-172
Keywords [en]
Beamfocusing, modular MIMO, near-field
National Category
Signal Processing Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-362685DOI: 10.1109/IEEECONF60004.2024.10942867ISI: 001479671800033Scopus ID: 2-s2.0-105002696073OAI: oai:DiVA.org:kth-362685DiVA, id: diva2:1954127
Conference
58th Asilomar Conference on Signals, Systems and Computers, ACSSC 2024, Hybrid, Pacific Grove, United States of America, October 27-30, 2024
Note

Part of ISBN 9798350354058

QC 20250424

Available from: 2025-04-23 Created: 2025-04-23 Last updated: 2025-12-05Bibliographically approved

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Kosasih, AlvaBjörnson, Emil

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