A new two-dimensional pilot design and tensor-based estimator let massive MIMO-OFDM base stations estimate channels for hundreds of users with lower error and lower complexity than previous approaches.
Towards 6G wireless com- munication networks: Vision, enabling technologies, and n ew paradigm shifts,
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Massive MIMO-OFDM Channel Acquisition with Time-Frequency Phase-Shifted Pilots
A new two-dimensional pilot design and tensor-based estimator let massive MIMO-OFDM base stations estimate channels for hundreds of users with lower error and lower complexity than previous approaches.