6 papers · 1 filter
Robust Beamforming and Power Allocation for Coherent Cell-Free Massive MIMO with Residual Calibration Errors
Mingjun Sun, Xidong Mu, Shaochuan Wu +2
This paper investigates robust downlink transmission to tolerate calibration aging in time-division duplex cell-free massive multiple-input multiple-output (CF-mMIMO) systems with…
Robust Beamforming for Pinching-Antenna Systems
Mingjun Sun, Chongjun Ouyang, Shaochuan Wu +1
Pinching-antenna system (PASS) mitigates large-scale path loss by enabling flexible placement of pinching antennas (PAs) along the dielectric waveguide. However, most existing stud…
Physical Layer Security for Pinching-Antenna Systems (PASS)
Mingjun Sun, Chongjun Ouyang, Shaochuan Wu +1
The pinching-antenna system (PASS) introduces new degrees of freedom (DoFs) for physical layer security (PLS) through pinching beamforming. In this paper, a couple of scenarios for…
Multiuser Beamforming for Pinching-Antenna Systems: An Element-wise Optimization Framework
Mingjun Sun, Chongjun Ouyang, Shaochuan Wu +1
The pinching-antenna system (PASS) reconstructs wireless channels through pinching beamforming, i.e., optimizing the activated locations of pinching antennas (PAs) along the wavegu…
A Homogeneous Graph Neural Network for Precoding and Power Allocation in Scalable Wireless Networks
Mingjun Sun, Shaochuan Wu, Haojie Wang +3
Deep learning is widely used in wireless communications but struggles with fixed neural network sizes, which limit their adaptability in environments where the number of users and…
Secure Beamforming for Continuous Aperture Array (CAPA) Systems
Mingjun Sun, Chongjun Ouyang, Zhaolin Wang +2
Continuous aperture array (CAPA) is considered a promising technology for 6G networks, offering the potential to fully exploit spatial DoFs and achieve the theoretical limits of ch…