Research Paper#Wireless Communication, Massive MIMO, Fluid Antennas🔬 ResearchAnalyzed: Jan 3, 2026 19:18
Uplink Analysis of Cell-Free Massive MIMO with Fluid Antennas
Published:Dec 28, 2025 19:12
•1 min read
•ArXiv
Analysis
This paper investigates the use of fluid antennas (FAs) in cell-free massive MIMO (CF-mMIMO) systems to improve uplink spectral efficiency (SE). It proposes novel channel estimation and port selection strategies, analyzes the impact of antenna geometry and spatial correlation, and develops an optimization framework. The research is significant because it explores a promising technology (FAs) to enhance the performance of CF-mMIMO, a key technology for future wireless networks. The paper's focus on practical constraints like training overhead and its detailed analysis of different AP array configurations adds to its value.
Key Takeaways
- •Proposes a novel channel estimation scheme for CF-mMIMO with fluid antennas.
- •Develops a distributed port selection strategy to minimize channel estimation error.
- •Analyzes the impact of antenna geometry and spatial correlation.
- •Derives closed-form uplink SE expressions.
- •Introduces an alternating-optimization framework for FA port configuration.
Reference
“The paper derives SINR expressions and a closed-form uplink SE expression, and proposes an alternating-optimization framework to select FA port configurations that maximize the uplink sum SE.”