5 papers
Learned Score-Based Turbo Message Passing for Channel Recovery From Spatially Compressed Measurements
Yiming Wei, Xiaojun Yuan
Hybrid beamforming (HBF) reduces the hardware cost of massive MIMO base stations, but its channel acquisition requires recovering the full spatial-domain channel from highly compre…
An overring characterization of Gorenstein Prüfer domains
Hwankoo Kim
We prove that a commutative integral domain is Gorenstein Prüfer if and only if every overring is Gorenstein flat over the original domain. It is enough to test overrings that are…
A Universal Random Precoding Framework for MIMO Systems
Jiazhen Dong, Lei Liu, Xiaojun Yuan +1
Current wireless systems combat inter-symbol interference (ISI) by diagonalizing or sparsifying the channel matrix, yet they remain vulnerable to selective fading. To address this,…
User Activity Detection with Delay-Calibration for Asynchronous Massive Random Access
Zhichao Shao, Xiaojun Yuan, Rodrigo C. de Lamare +1
This work considers an uplink asynchronous massive random access scenario in which a large number of users asynchronously access a base station equipped with multiple receive anten…
Energy-Efficient UAV-Mounted RIS Assisted Mobile Edge Computing
Zhiyuan Zhai, Xinhong Dai, Bin Duo +2
Unmanned aerial vehicle (UAV) and reconfigurable intelligent surface (RIS) have been recently applied in the field of mobile edge computing (MEC) to improve the data exchange envir…