[en] Terahertz (THz) band is currently envisioned as the
key building block to achieving the future sixth generation (6G)
wireless systems. The ultra-wide bandwidth and very narrow
beamwidth of THz systems offer the next order of magnitude
in user densities and multi-functional 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 paper 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
bEAam-split and Mutual coupling (CREAM-MUSIC) algorithm
for this purpose. Via numerical simulations, we show the proposed
CREAM-MUSIC approach accurately estimates the DoAs
in the presence of beam-split and mutual coupling.
Disciplines :
Sciences informatiques
Auteur, co-auteur :
Elbir, Ahmet M.; Senior Member, IEEE
Kumar Vijay Mishra; Senior Member, IEEE
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
Terahertz-Band Direction Finding With Beam-Split and Mutual Coupling Calibration
Date de publication/diffusion :
01 novembre 2023
Titre du périodique :
IEEE Antennas and Wireless Propagation Letters
ISSN :
1536-1225
eISSN :
1548-5757
Maison d'édition :
Institute of Electrical and Electronics Engineers, Etats-Unis - New York
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