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eess.SP2026
Near-field channel estimation via wavefront parameterization
Heedong Do, Namyoon Lee, Angel Lozano
This paper deals with the estimation of multiantenna channels in the line-of-sight conditions that are prevalent in the near field. By expressing the curved wavefront as a polynomi…
eess.SP2025
Transformer-Based Nonlinear Transform Coding for Multi-Rate CSI Compression in MIMO-OFDM Systems
Bumsu Park, Heedong Do, Namyoon Lee
We propose a novel approach for channel state information (CSI) compression in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems, where…
eess.SP2024
Multidimensional Polynomial Phase Estimation
Heedong Do, Namyoon Lee, Angel Lozano
An estimation method is presented for polynomial phase signals, i.e., those adopting the form of a complex exponential whose phase is polynomial in its indices. Transcending the sc…