Proposes a block-Kronecker cascaded channel model and three-stage estimation protocol using DFT, OMP, and HBOMP for group-connected BD-RIS-aided MU mmWave systems to reduce pilot overhead and complexity.
Intelligent omni-surfaces: Simultaneous re- fraction and reflection for full-dimensional wireless communications
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Channel Estimation for Beyond Diagonal RIS-Aided Multi-User mmWave Systems
Proposes a block-Kronecker cascaded channel model and three-stage estimation protocol using DFT, OMP, and HBOMP for group-connected BD-RIS-aided MU mmWave systems to reduce pilot overhead and complexity.