Covariance-Based Activity Detection With Orthogonal Pilot Sequences for Cell-Free Distributed Massive MIMO Systems
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DOI: 10.1109/tvt.2022.3205062
Abstract: The grant-free random access (GFRA) has been the mainstream access scheme in the massive ultra-reliable low-latency communications (mURLLC). Device activity detection is the foremost issue in GFRA. Most of previous works assume unique non-orthogonal pilot… read more here.
Keywords: pilot sequences; orthogonal pilot; activity detection; pilot ... See more keywords