Multiple Preambles for High Success Rate of Grant-Free Random Access With Massive MIMO
Multiple Preambles for High Success Rate of Grant-Free Random Access With Massive MIMO
Grant-free random access (RA) with massive MIMO is a promising RA technique that provides significant benefits in increasing the channel reuse efficiency with low signaling overhead. Since user equipment (UE) detection and channel estimation in grant-free RA rely solely on the received preambles, preamble designs that enable high success rate …