BSA-OMP: Beam-Split-Aware Orthogonal Matching Pursuit for THz Channel Estimation
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Dosyalar
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute of Electrical and Electronics Engineers Inc.
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Terahertz (THz)-band has been envisioned for the sixth generation wireless networks thanks to its ultra-wide bandwidth and very narrow beamwidth. Nevertheless, THz-band transmission faces several unique challenges, one of which is beam-split which occurs due to the usage of subcarrier-independent analog beamformers and causes the generated beams at different subcarriers split, and point to different directions. Unlike the prior works dealing with beam-split by employing additional complex hardware components, e.g., time-delayer networks, a beam-split-aware orthogonal matching pursuit (BSA-OMP) approach is introduced to efficiently estimate the THz channel and beamformer design without any additional hardware. Specifically, we design a BSA dictionary comprised of beam-split-corrected steering vectors which inherently include the effect of beam-split so that the proposed BSA-OMP solution automatically yields the beam-split-corrected physical channel directions. Numerical results demonstrate the superior performance of BSA-OMP approach against the existing state-of-the-art techniques. IEEE
Açıklama
Anahtar Kelimeler
Arrays, beam split, channel estimation, Channel estimation, Dictionaries, Hardware, Matching pursuit algorithms, MIMO communication, orthogonal matching pursuit, Radio frequency, support recovery, Terahertz, Beamforming, Frequency estimation, Array, Beam split, Hardware, Matching pursuit algorithms, MIMO communication, Orthogonal matching pursuit, Radiofrequencies, Support recoveries, Tera Hertz, Terahertz band, Channel estimation
Kaynak
IEEE Wireless Communications Letters
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
