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107 papers · 1 filter
Direct Satellite-to-Device Communications: From Cooperative Task Offloading to Non-Cooperative Access Monitoring
Sai Huang, Wanli Ni, Ke Lv +5
Direct satellite-to-device (DS2D) communication is emerging as a transformative paradigm for extending ubiquitous connectivity and edge computing capabilities to remote and underse…
Channel Estimation for Flexible Intelligent Metasurfaces: From Model-Based Approaches to Neural Operators
Jian Xiao, Ji Wang, Qimei Cui +4
Flexible intelligent metasurfaces (FIMs) offer a new solution for wireless communications by introducing morphological degrees of freedom, dynamically morphing their three-dimensio…
Wireless Environmental Information Theory: A New Paradigm towards 6G Online and Proactive Environment Intelligence Communication
Jianhua Zhang, Li Yu, Shaoyi Liu +4
The channel is one of the five critical components of a communication system, and its ergodic capacity is based on all realizations of statistic channel model. This statistical par…
Distributed satellite information networks: Architecture, enabling technologies, and trends
Qinyu Zhang, Liang Xu, Jianhao Huang +23
Driven by the vision of ubiquitous connectivity and wireless intelligence, the evolution of ultra-dense constellation-based satellite-integrated Internet is underway, now taking pr…
Covariance-Based Device Activity Detection with Massive MIMO for Near-Field Correlated Channels
Ziyue Wang, Yang Li, Ya-Feng Liu +1
This paper studies the device activity detection problem in a massive multiple-input multiple-output (MIMO) system for near-field communications (NFC). In this system, active devic…
Secrecy Performance Analysis of Multi-Functional RIS-Assisted NOMA Networks
Yingjie Pei, Wanli Ni, Jin Xu +3
Although reconfigurable intelligent surface (RIS) can improve the secrecy communication performance of wireless users, it still faces challenges such as limited coverage and double…