Autors: Zhong Y., Chen J., Xiao Y., Poulkov, V. K., Yuen C.
Title: Movable Antennas for Terahertz Broadcast Beamforming in Hybrid-Field Scenarios
Keywords: alternating optimization (AO), beamforming, Movable antenna (MA), near-field, Terahertz (THz)

Abstract: Given the increased likelihood of near-field effects in Terahertz (THz) communications, there is an urgent need to enhance beamforming performance in such environments. Therefore, this contribution introduces a system designed for THz broadcast beamforming that effectively operates across near-field and far-field scenarios, namely hybrid-field regions, utilizing movable antennas (MAs). Specifically, we develop a joint optimization strategy for the beamforming vector and the locations of the MAs to maximize the minimal beamforming gain. For the challenging non-convex constraints, we employ alternating optimization (AO), successive convex approximation (SCA), and semidefinite relaxation (SDR) techniques to provide necessary relaxations and feasible solutions. Finally, simulation results demonstrate that the proposed method provides about 66.7% improvement for THz broadcast beamforming in hybrid-field scenarios.

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Issue

IEEE Wireless Communications Letters, pp. 2321-2325, 2025, United States, https://doi.org/10.1109/LWC.2025.3568430

Copyright Institute of Electrical and Electronics Engineers Inc.

Цитирания (Citation/s):
1. Li M., Shu F., Si Y., Chen R., Pan C., Wu Y., Near-Field Directional Modulation for RIS-Aided Movable Antenna MIMO Systems With Hardware Impairments, 2025, IEEE Transactions on Network Science and Engineering, issue 0, DOI 10.1109/TNSE.2025.3594342, eissn 23274697 - 2025 - в издания, индексирани в Scopus и/или Web of Science
2. Su N., Mei W., Wei X., Chen Z., Ning B., Movable Antenna-Enhanced Near-Field Beamforming: Impact of Antenna Position Errors, 2025, 2025 International Conference on Future Communications and Networks Fcn 2025 Proceedings, issue 0, DOI 10.1109/FCN66513.2025.11296708 - 2026 - в издания, индексирани в Scopus
3. Liu, J, Zhong, Y, Wang, Y, Gong, D, Xiao, Y, Spatial and Directional Modulation Systems for Near-Field Secure Transmission, SENSORS, vol 26, 2026, eissn: 1424-8220, art_no: ARTN 1065, doi: 10.3390/s26031065, pmid: MEDLINE:41682580 - 2026 - в издания, индексирани в Scopus и/или Web of Science

Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus и Web of Science