Phase-Aware Localization in Pinching Antenna Systems: CRLB Analysis and ML Estimation
Hunan Institute of Engineering(湖南工程学院);Donghua University(东华大学);Laval University(拉瓦尔大学);University of Saskatchewan(萨斯喀彻温大学);Henan Polytechnic University(河南理工大学);Sun Yat-sen University(中山大学);School of Computer Science and Statistics, Trinity College Dublin(都柏林三一学院计算机科学与统计学院)
Pinching antenna systems (PASS) have emerged as a promising architecture for high-frequency wireless communications. In this letter, we investigate user localization in PASS by jointly exploiting the received signal amplitude and phase information. A complex baseband signal model is formulated to capture free-space path loss, waveguide attenuation, and distance-dependent phase rotation between the user and each pinching antenna. Based on this model, we derive the Fisher information matrix and closed-form Cramer-Rao lower bound and position error bound. The derived analysis reveals that the phase-induced Fisher information decays with the fourth power of the user-antenna distance, whereas the amplitude-induced information decays with the sixth power, explaining the fundamental advantage of phase-aware localization in typical PASS deployments. A maximum likelihood estimator is then developed and implemented through a two-stage procedure combining coarse grid search and Levenberg-Marquardt refinement. Numerical results show that the proposed estimator achieves low positioning error and generally outperforms the considered benchmarks under different noise powers, numbers of pinching antennas, and user locations. In the considered scenario, the proposed method achieves sub-meter-level accuracy over the evaluated service area and yields substantially lower positioning error than the amplitude-only benchmark.
Ergodic Rate Analysis of Two-State Pinching-Antenna Systems
University of Patras(帕特雷大学);Aristotle University of Thessaloniki(塞萨洛尼基亚里士多德大学);Southwest Jiaotong University(西南交通大学);Dienekes SI IKE;Technical University of Chania(哈尼亚技术大学);University of Ioannina(约阿尼纳大学)
Physical-Layer Security of Pinching-Antenna Systems
Princess Sumaya University for Technology(公主苏玛耶科技大学);Universidade de Brasilia(巴西利亚大学);Hamad Bin Khalifa University(哈马德·本·哈利法大学);University of Jordan(约旦大学);Qatar University(卡塔尔大学)
Modeling and Beamforming Optimization for Pinching-Antenna Systems
Queen Mary University of London(伦敦大学玛丽女王学院);Queen’s University Belfast(贝尔法斯特女王大学);The University of Hong Kong(香港大学);Khalifa University(哈利法大学);University of Manchester(曼彻斯特大学)
Robust Joint Power Allocation and Antenna Placement for Pinching-Antenna Systems under Gaussian Location Uncertainty
Hunan Institute of Engineering(湖南工程学院);Donghua University(东华大学);Laval University(拉瓦尔大学);Henan Polytechnic University(河南理工大学);School of Information Science and Engineering, Hunan Institute of Science and Technology(湖南理工学院信息科学与工程学院);Nanjing Normal University(南京师范大学);Memorial University(纪念大学)
Multiport Network Modeling and Optimization for Reconfigurable Pinching-Antenna Systems
The University of Hong Kong(香港大学);University of California at Irvine(加州大学尔湾分校);Queen Mary University of London(伦敦大学玛丽女王学院);Queen’s University Belfast(贝尔法斯特女王大学)
Hybrid Wireless-Fed Pinching-Antenna Systems with Residual Self-Interference-Aware Optimization
Hunan Institute of Engineering(湖南工程学院);Donghua University(东华大学);Laval University(拉瓦尔大学);University of Saskatchewan(萨斯喀彻温大学);Henan Polytechnic University(河南理工大学);Memorial University(纪念大学);Nanyang Technological University(南洋理工大学)
Robust Single- and Multi-Pinching Antenna Systems Under User Location Uncertainty
Hunan Institute of Engineering(湖南工程学院);Donghua University(东华大学);Laval University(拉瓦尔大学);University of Saskatchewan(萨斯喀彻温大学);Henan Polytechnic University(河南理工大学);Zhengzhou University(郑州大学);ShanghaiTech University(上海科技大学)
Pinching-Antenna-Enabled ISAC: A Unified Architecture for Flexible Communication and Sensing
Chongqing University of Posts and Telecommunications(重庆邮电大学);Queen Mary University of London(伦敦玛丽女王大学);Zhengzhou University of Aeronautics(郑州航空工业管理学院);Imperial College London(帝国理工学院)
Two-Timescale Joint Transmit and Pinching Beamforming for Pinching-Antenna Systems
College of Information Science and Electronic Engineering, Zhejiang University(信息科学与电子工程学院,浙江大学);Centre for Wireless Innovation (CWI), Queen’s University Belfast(无线创新中心(CWI),女王大学贝尔法斯特分校);Department of Electrical and Electronic Engineering (EEE), The University of Hong Kong(电子与电气工程系(EEE),香港大学)
Generalized Pinching-Antenna Systems: A Tutorial on Principles, Design Strategies, and Future Directions
The Chinese University of Hong Kong, Shenzhen(香港中文大学(深圳));Southwest Jiaotong University(西南交通大学);Southeast University(东南大学);Nanyang Technological University(南洋理工大学);Friedrich-Alexander-University Erlangen-Nürnberg (FAU)(埃尔朗根-纽伦堡弗里德里希·阿列克桑德大学);The University of British Columbia(不列颠哥伦比亚大学);Memorial University(纪念大学);Aristotle University of Thessaloniki(塞萨洛尼基亚里士多德大学)
Sum Rate Maximization for NOMA-Assisted Uplink Pinching-Antenna Systems
Laval University(拉瓦尔大学);Central China Normal University(华中师范大学);Henan Polytechnic University(河南理工大学);Beijing Jiaotong University(北京交通大学);Memorial University(纪念大学);The University of Manchester(曼彻斯特大学)
Straggler-Resilient Federated Learning over A Hybrid Conventional and Pinching Antenna Network
Department of Electrical and Computer Engineering(电气与计算机工程系);Department of Computer Science(计算机科学系);Department of Electrical Engineering and Computer Engineering(电气工程与计算机工程系)