4 papers · 1 filter
Beyond Spherical Wavefront: Near-Field Channel Estimation Under Wavefront Anisotropy
Heling Zhang, Xiujun Zhang, Xiaofeng Zhong +1
Extremely large aperture arrays (ELAAs) and millimeter-wave (mmWave) technologies are essential for achieving high data rates in future wireless communication systems. To perform p…
Constructing Knowledge Map for MIMO-OFDM Clustered Channel Estimation
Heling Zhang, Xiujun Zhang, Xiaofeng Zhong +1
Channel knowledge map (CKM) exploits environ-ment information to assist channel estimation during communi-cation. For clustered channels, which represent a typical type ofwireless…
Channel Correlation Matrix Extrapolation Based on Roughness Calibration of Scatterers
Heling Zhang, Xiujun Zhang, Xiaofeng Zhong +1
To estimate the channel correlation matrix (CCM) in areas where channel information cannot be collected in advance, this paper proposes a way to spatially extrapolate CCM based on…
Permittivity Estimation in Ray-tracing Using Path Loss Data based on GAMP
Yuanhao Jiang, Shidong Zhou, Xiaofeng Zhong
In this paper, we propose a modified Generalized Approximate Message Passing (GAMP) algorithm to estimate permittivity parameters using path loss data in ray-tracing model.