A beacon-antenna pre-equalization scheme shifts grant-free massive MIMO random access to a semi-blind iterative detection problem with coarse data detection, data-aided channel estimation, and fine data detection.
Compressive sensing-based adaptive active UE detection and channel estimation: Massive access meets massive MIMO,
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Pre-Equalization Aided Grant-Free Massive Access in Massive MIMO System
A beacon-antenna pre-equalization scheme shifts grant-free massive MIMO random access to a semi-blind iterative detection problem with coarse data detection, data-aided channel estimation, and fine data detection.