Search Results for author: Mingjun Sun

Found 4 papers, 0 papers with code

Physical Layer Security for Pinching-Antenna Systems (PASS)

no code implementations12 Mar 2025 Mingjun Sun, Chongjun Ouyang, Shaochuan Wu, Yuanwei Liu

1) For the case with a single legitimate user (Bob) and a single eavesdropper (Eve), a closed-form expression for the optimal baseband beamformer is derived.

Secure Beamforming for Continuous Aperture Array (CAPA) Systems

no code implementations9 Jan 2025 Mingjun Sun, Chongjun Ouyang, Zhaolin Wang, Shaochuan Wu, Yuanwei Liu

This approach derives a closed-form expression for the optimal source current pattern.

A Homogeneous Graph Neural Network for Precoding and Power Allocation in Scalable Wireless Networks

no code implementations30 Aug 2024 Mingjun Sun, Shaochuan Wu, Haojie Wang, Yuanwei Liu, Guoyu Li, Tong Zhang

Lastly, using ICGNN as the core algorithm, we tailor the neural network's input and output for specific problem requirements and validate its performance in two scenarios: 1) in cellular networks, we develop a matrix-inverse-free multi-user multi-input multi-output (MU-MIMO) precoding scheme using the conjugate gradient (CG) method, adaptable to varying user and antenna numbers; 2) in a cell-free network, facing dynamic variations in the number of users served by APs, the number of APs serving each user, and the number of antennas per AP, we propose a universal power allocation scheme.

Graph Neural Network

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