Pilot domain NOMA for grant-free massive random access in massive MIMO marine communication system

We propose a pilot domain non-orthogonal multiple access (NOMA) for uplink massive devices grant-free random access scenarios in massive multiple-input multiple-output (MIMO) maritime communication systems. These scenarios are characterized by numerous devices with sporadic access behavior, and therefore only a subset of them are active. Due to massive potential devices in the network, it is infea...