articleIEEE Transactions on Wireless CommunicationsMay 29, 2024Closed access

Near-Field Wideband Beamforming for Extremely Large Antenna Arrays

MCMingyao CuiLDLinglong Dai

Tsinghua University

Indexed incrossref

Abstract

The natural integration of extremely large antenna arrays (ELAAs) and terahertz (THz) communications can potentially establish Tbps data links for 6G networks. However, due to the extremely large array aperture and wide bandwidth, a new phenomenon termed as “near-field beam split” emerges. This phenomenon causes beams at different frequencies to focus on distinct physical locations, leading to a significant loss of the beamforming gain. To address this challenging problem, we first harness a piecewise-far-field channel model to approximate the complicated near-field wideband channel. In this model, the entire large array is partitioned into several small sub-arrays. While the wireless channel’s phase…

Citation impact

145
total citations
FWCI
26.91
Percentile
100%
References
34
Citations per year

Authors

2

Topics & keywords

Topics
Keywords
  • Beamforming
  • Wideband
  • Computer science
  • Near and far field
  • Planar array
  • Phased array
  • Antenna array
  • Antenna (radio)
UN Sustainable Development Goals
  • Affordable and clean energy
No related works found for this paper.

Funding