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eess.SP2026
2D Block OMP for Near-Field Channel Estimation with Extremely Large-Scale UPA
Hongwei Wang, Shuai Wang, Xiaofei Long +2
Channel estimation for extremely large-scale uniform planar arrays (UPAs) requires exploiting near-field channel structure to reduce pilot overhead. With a specifically devised cha…
eess.SP2026
Near-Field Wideband Channel Estimation for Extremely Large-Scale RIS-Aided Communication Systems
Lanqing Zhi, Hongwei Wang, Lingxiang Li +1
This paper studies wideband channel estimation for OFDM systems assisted by extremely large RIS (XL-RIS). Due to the large aperture of XL-RISs, the user equipment may operate in th…
eess.SP2026
Near-Field Channel Estimation for mmWave/THz Communications with Extremely Large-Scale UPAs
Yiming Chen, Hongwei Wang, Lingxiang Li +1
Extremely large antenna arrays (ELAAs) are widely adopted in mmWave/THz communications to compensate for the severe path loss, wherein the channel estimation remains a significant…