Joint User Clustering and Graph Coloring Based Pilot Assignment for Cell-Free Massive MIMO Systems

Joint User Clustering and Graph Coloring Based Pilot Assignment for Cell-Free Massive MIMO Systems

Pilot contamination due to pilot reuse seriously mitigates the performance of the cell-free massive multiple-input multiple-output (MIMO) systems. In this paper, we propose a joint pilot assignment scheme that employs user clustering and graph coloring (UC-GC) to reduce pilot contamination. The prop...

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Bibliographic Details
Main Authors: Xinyu Huang, Yubo Wang, Shiyong Chen, Yan Li, Yucheng Wu
Format: Article
Language:English
Published: MDPI AG 2023-05-01
Series:Sensors
Subjects:
cell-free massive MIMO
pilot contamination
AP selection
user clustering
graph coloring
Online Access:https://www.mdpi.com/1424-8220/23/11/5014

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