3 papers
eess.SP2025
Distributed Activity Detection for Cell-Free Hybrid Near-Far Field Communications
Jingreng Lei, Yang Li, Zeyi Ren +4
A great amount of endeavor has recently been devoted to activity detection for massive machine-type communications in cell-free massive MIMO. However, in practice, as the number of…
cs.IT2025
Covariance-Based Device Activity Detection with Massive MIMO for Near-Field Correlated Channels
Ziyue Wang, Yang Li, Ya-Feng Liu +1
This paper studies the device activity detection problem in a massive multiple-input multiple-output (MIMO) system for near-field communications (NFC). In this system, active devic…
cs.IT2024
Covariance-Based Activity Detection in Cooperative Multi-Cell Massive MIMO: Scaling Law and Efficient Algorithms
Ziyue Wang, Ya-Feng Liu, Zhaorui Wang +1
This paper focuses on the covariance-based activity detection problem in a multi-cell massive multiple-input multiple-output (MIMO) system. In this system, active devices transmit…