Fast Near-Field Beam Training for Extremely Large-Scale Array

• Published in: IEEE wireless communications letters Vol. 11; no. 12; p. 1
• Main Authors: Zhang, Yunpu, Wu, Xun, You, Changsheng
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.12.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Array signal processing; Arrays; beam training; Beamforming; Benchmark testing; Channel models; Communications systems; Data communication; Data transmission; Domains; Estimation; Extremely large-scale array (XL-array); Far fields; Near fields; near-field communication; Searching; Symbols; Training; Wave fronts; Wave propagation

In this letter, we study efficient near-field beam training design for the extremely large-scale array (XL-array) communication systems. Compared with the conventional far-field beam training method that searches for the best beam direction only, the near-field beam training is more challenging sinc...