3 papers
cs.IT2025
Fluid Antenna Meets RIS: Random Matrix Analysis and Two-Timescale Design for Multi-User Communications
Xin Zhang, Dongfang Xu, Jingjing Wang +3
The reconfigurability of fluid antenna systems (FASs) and reconfigurable intelligent surfaces (RISs) provides significant flexibility in optimizing channel conditions by jointly ad…
math.ST2025
No Eigenvalues Outside the Limiting Support of Generally Correlated and Noncentral Sample Covariance Matrices
Zeyan Zhuang, Xin Zhang, Dongfang Xu +1
Spectral properties of random matrices play an important role in statistics, machine learning, communications, and many other areas. Engaging results regarding the convergence of t…
cs.IT2025
Decentralized MIMO Systems with Imperfect CSI using LMMSE Receivers
Zeyan Zhuang, Xin Zhang, Dongfang Xu +2
Centralized baseband processing (CBP) is required to achieve the full potential of massive multiple-input multiple-output (MIMO) systems. However, due to the large number of antenn…