Improving Fairness for Cell-Free Massive MIMO Through Interference-Aware Massive Access

Article Telecommunications

A survey on user-centric cell-free massive MIMO systems

Shuaifei Chen et al.

Summary: This paper surveys the existing research in the field of CF mMIMO, highlighting its significance and basic properties. It provides a framework to discuss key details such as transmission procedure and mathematical system model, and explores resource allocation and signal processing problems related to CF mMIMO while surveying the latest schemes and algorithms. Practical issues in implementing CF mMIMO are also discussed, along with potential future directions.

DIGITAL COMMUNICATIONS AND NETWORKS (2022)

Add to Collection

Proceedings Paper Telecommunications

Treating Interference as Noise in Cell-Free Massive MIMO Networks

Shuaifei Chen et al.

Summary: This paper investigates the probability that the treating interference as noise (TIN) conditions hold in a cell-free massive multiple-input multiple-output (CF mMIMO) system using stochastic geometry analysis. A novel analytical framework is proposed using Binomial Point Process (BPP) and Poisson Point Process (PPP) approximations. The derived expressions are validated and the impact of system parameters on the probability that the TIN conditions hold is illustrated.

IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC 2022) (2022)

Add to Collection

Article Computer Science, Information Systems

Pilot Assignment in Cell-Free Massive MIMO Based on the Hungarian Algorithm

Stefano Buzzi et al.

Summary: This letter addresses the pilot assignment problem in cell-free massive MIMO systems by proposing two algorithms that maximize system throughput and fairness across users. The algorithms leverage large-scale fading coefficients to optimize the assignments effectively and outperform existing alternatives in the literature.

IEEE WIRELESS COMMUNICATIONS LETTERS (2021)

Add to Collection

Article Engineering, Electrical & Electronic

Structured Massive Access for Scalable Cell-Free Massive MIMO Systems

Shuaifei Chen et al.

Summary: This paper proposes a new framework for structured massive access in cell-free massive MIMO systems, which improves system performance through specific algorithms and strategies. The results show that this framework provides high spectral efficiency while ensuring user fairness.

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS (2021)

Add to Collection

Article Engineering, Electrical & Electronic

Pilot Assignment for Cell Free Massive MIMO Systems Using a Weighted Graphic Framework

Wenbo Zeng et al.

Summary: This paper proposes an efficient pilot assignment scheme using a weighted graphic framework to address pilot contamination in cell-free massive MIMO networks. By introducing a novel metric and constructing a weighted pilot contamination graph, the scheme is capable of significantly improving throughput with low complexity.

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY (2021)

Add to Collection

Article Engineering, Electrical & Electronic