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.
Low-overhead channel estimation framework for beyond diagonal reconfigurable intelligent surface assisted multi-user MIMO communication,
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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.