3 papers
cs.IT2022
Reconfigurable Intelligent Surface With Energy Harvesting Assisted Cooperative Ambient Backscatter Communications
Hui Ma, Haijun Zhang, Ning Zhang +3
The performance of cooperative ambient backscatter communications (CABC) can be enhanced by employing reconfigurable intelligent surface (RIS) to assist backscatter transmitters. S…
cs.IT2021
Sparse Channel Reconstruction With Nonconvex Regularizer via DC Programming for Massive MIMO Systems
Pengxia Wu, Hui Ma, Julian Cheng
Sparse channel estimation for massive multiple-input multiple-output systems has drawn much attention in recent years. The required pilots are substantially reduced when the sparse…
cs.IT2018
Secrecy Beamforming for SWIPT MISO Heterogeneous Cellular Networks
Hui Ma, Julian Cheng, Xianfu Wang
In this paper, we consider the secure transmission design for a multiple-input single-output Femtocell overlaid with a Macrocell in co-channel deployment. The Femtocell base statio…