160 Papers
104 Citations
Xidong Mu is an academic researcher from Beijing University of Posts and Telecommunications. The author has contributed to research in topics: Computer science & Engineering. The author has an hindex of 11, co-authored 50 publications.
Chat about Author
Papers
•Posted Content
SRAR-RISs: Simultaneous Reflecting and Refracting Reconfigurable Intelligent Surfaces
TL;DR: In this article, a hardware model and channel model for the near-field region and a far-field channel model are presented for SRAR-RISs. But the authors focus on the channel gains in terms of the physical parameters of the SRAR and the geometrical information of the receivers.
5
•Posted Content
Trajectory and Passive Beamforming Design for IRS-aided Multi-Robot NOMA Indoor Networks
Xinyu Gao,Yuanwei Liu,Xidong Mu +2 more
TL;DR: Numerical results demonstrated that the proposed D3QN algorithm outperforms the conventional algorithm, while the performance of IRS-NOMA network is better than the orthogonal multiple access (OMA) network.
5
Robust Resource Allocation for STAR-RIS Assisted SWIPT Systems
Xidong Mu,Ao Huang,Shibiao Xu +2 more
TL;DR: A robust resource allocation scheme for STAR-RIS assisted SWIPT systems is proposed, optimizing data rate and harvested power under imperfect CSI condition.
4
NOMA Assisted Full Space STAR-RIS-ISAC
Na Xue,Xidong Mu,Yuanwei Liu,Yue Chen +3 more
TL;DR: A novel NOMA-assisted full-space ISAC framework is proposed, leveraging STAR-RIS to enhance radio sensing performance, and employing CB-NOMA to alleviate resource competition, with optimized power allocation and beamformer design using BCD and SDP algorithms.
4
Modeling and Beamforming Optimization for Pinching-Antenna Systems
Zhao Jie Wang,Chongjun Ouyang,Xidong Mu,Yuanwei Liu,Zhiguo Ding +4 more
Abstract: The Pinching-Antenna SyStem (PASS) is a revolutionary flexible antenna technology designed to enhance wireless communication by establishing strong line-of-sight (LoS) links, reducing free-space path loss and enabling antenna array reconfigurability. PASS uses dielectric waveguides with low propagation loss for signal transmission, radiating via a passive pinching antenna, which is a small dielectric element applied to the waveguide. This paper first proposes a physics-based hardware model for PASS, where the pinching antenna is modeled as an open-ended directional coupler, and the electromagnetic field behavior is analyzed using coupled-mode theory. A simplified signal model characterizes the coupling effect between multiple antennas on the same waveguide. Based on this, two power models are proposed: equal power and proportional power models. Additionally, a transmit power minimization problem is formulated/studied for the joint optimization of transmit and pinching beamforming under both continuous and discrete pinching antenna activations. Two algorithms are proposed to solve this multimodal optimization problem: the penalty-based alternating optimization algorithm and a low-complexity zero-forcing (ZF)-based algorithm. Numerical results show that 1) the ZF-based low-complexity algorithm performs similarly to the penalty-based algorithm, 2) PASS reduces transmit power by over 95% compared to conventional and massive MIMO, 3) discrete activation causes minimal performance loss but requires a dense antenna set to match continuous activation, and 4) the proportional power model yields performance comparable to the equal power model.