A Unified Framework of Non-Orthogonal Pilot Design for Multi-Cell Massive MIMO Systems
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Communications"
DOI: 10.1109/tcomm.2020.3017283
Abstract: In this work, we propose a novel non-orthogonal pilot design framework to tackle the pilot contamination problem in multi-cell massive multiple input multiple output (MIMO) systems. Assuming the minimum mean square error (MMSE) estimators are… read more here.
Keywords: non orthogonal; pilot; orthogonal pilot; framework ... See more keywords
Covariance-Based Activity Detection With Orthogonal Pilot Sequences for Cell-Free Distributed Massive MIMO Systems
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Vehicular Technology"
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
Adaptive Pilot Allocation for Estimating Sparse Uplink MU-MIMO-OFDM Channels
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Wireless Communications"
DOI: 10.1109/twc.2022.3164970
Abstract: We consider uplink multiuser multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication. The transmit (Tx) side of the envisaged system consists of several single-antenna users or/and several multiple-antenna users. At the receive side, a… read more here.
Keywords: antenna; pilot; pilot allocation; orthogonal pilot ... See more keywords