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Physical Layer Security Enhancement With Reconfigurable Intelligent Surface-Aided Networks
Jiayi Zhang, Hongyang Du, Qiang Sun +2
Reconfigurable intelligent surface (RIS)-aided wireless communications have drawn significant attention recently. We study the physical layer security of the downlink RIS-aided tra…
Deep Residual Network Empowered Channel Estimation for IRS-Assisted Multi-User Communication Systems
Chang Liu, Xuemeng Liu, Derrick Wing Kwan Ng +1
Channel estimation is of great importance in realizing practical intelligent reflecting surface-assisted multi-user communication (IRS-MC) systems. However, different from traditio…
Cooperative Activity Detection: Sourced and Unsourced Massive Random Access Paradigms
Xiaodan Shao, Xiaoming Chen, Derrick Wing Kwan Ng +2
This paper investigates the issue of cooperative activity detection for grant-free random access in the sixth-generation (6G) cell-free wireless networks with sourced and unsourced…
Energy Efficiency and Spectral Efficiency Tradeoff in RIS-Aided Multiuser MIMO Uplink Transmission
Li You, Jiayuan Xiong, Derrick Wing Kwan Ng +3
The emergence of reconfigurable intelligent surfaces (RISs) enables us to establish programmable radio wave propagation that caters for wireless communications, via employing low-c…
IRS-Assisted Green Communication Systems: Provable Convergence and Robust Optimization
Xianghao Yu, Dongfang Xu, Derrick Wing Kwan Ng +1
Intelligent reflecting surfaces (IRSs) are regarded as a key enabler of green wireless communication, due to their capability of customizing favorable wireless propagation environm…
Compressive Sensing Based Joint Activity and Data Detection for Grant-Free Massive IoT Access
Yikun Mei, Zhen Gao, Yongpeng Wu +4
Massive machine-type communications (mMTC) are poised to provide ubiquitous connectivity for billions of Internet-of-Things (IoT) devices. However, the required low-latency massive…