A Left-Null-Space-Based Massive Access Method for Cell-Free Massive MIMO IoT Systems
Cell-free massive multiple-input multiple-output (MIMO) is a promising technology for the Internet of Things (IoT) because it can increase connectivity and provide considerable energy efficiency (EE) and spectral efficiency (SE). However, pilot contamination caused by pilot reuse severely limits the...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
MDPI AG
2023-06-01
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Series: | Sensors |
Subjects: | |
Online Access: | https://www.mdpi.com/1424-8220/23/11/5285 |