Delay-Doppler and Angular Domain 4D-Sparse CSI Estimation in OTFS Aided MIMO Systems

Suraj Srivastava, Rahul Kumar Singh, Aditya K. Jagannatham, Lajos Hanzo. Delay-Doppler and Angular Domain 4D-Sparse CSI Estimation in OTFS Aided MIMO Systems. IEEE T. Vehicular Technology, 71(12):13447-13452, 2022. [doi]

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