Terahertz-Band Direction Finding With Beam-Split and Mutual Coupling Calibration
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ieee-Inst Electrical Electronics Engineers Inc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Terahertz (THz) band is currently envisioned as the key building block for achieving the future sixth generation wireless systems. The ultrawide bandwidth and very narrow beamwidth of THz systems offer the next order of magnitude in user densities and multifunctional behavior. However, wide bandwidth results in a frequency-dependent beampattern causing the beams generated at different subcarriers split and point to different directions. Furthermore, mutual coupling degrades the system's performance. This letter studies the compensation of both beam-split and mutual coupling for direction-of-arrival (DoA) estimation by modeling the beam-split and mutual coupling as an array imperfection. We propose a subspace-based approach using multiple signal classification with CalibRated for bEAm-split and Mutual coupling and MUltiple SIgnal Classification (CREAM-MUSIC) algorithm for this purpose. Via numerical simulations, we show that the proposed CREAM-MUSIC approach accurately estimates the DoAs in the presence of beam-split and mutual coupling.
Açıklama
Anahtar Kelimeler
Array calibration, beam split, direction-of-arrival (DoA) estimation, mutual coupling (MC), subspace-based harmonic retrieval, terahertz (THz), Tracking
Kaynak
Ieee Antennas And Wireless Propagation Letters
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
22
Sayı
11
