4 papers
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…
Matching-free Acquisition of Channels with Anisotropic Wavefronts
Heling Zhang, Shidong Zhou
The escalating data rate demands of future wireless communications necessitate the deployment of extremely large aperture arrays (ELAAs) in communication systems. Acquiring accurat…
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…