A Wideband IF Receiver Chip for Flexibly Scalable mmWave Subarray Combining and Interference Rejection
Large-scale multibeam phased array systems suffer from interbeam interference (IBI) that should be canceled either in the analog or digital domain. In […]
Facial Micro-Expressions: An Overview
Micro-expression (ME) is an involuntary, fleeting, and subtle facial expression. It may occur in high-stake situations when people attempt to conceal or […]
Facial Micro-Expressions
Micro-expression (ME) is an involuntary, fleeting, and subtle facial expression. It may occur in high-stake situations when people attempt to conceal or […]
Accuracy-Security Tradeoff with Balanced Aggregation and Artificial Noise for Wireless Federated Learning
In federated learning (FL), a number of devices train their local models and upload the corresponding parameters or gradients to the base […]
On CSI-Free Multiantenna Schemes for Massive Wireless-Powered Underground Sensor Networks
Radio-frequency wireless energy transfer (WET) is a promising technology to realize wireless-powered underground sensor networks (WPUSNs) and enable sustainable underground monitoring. However, […]
Composite Preambles Based on Differential Phase Rotations for Grant-free Random Access Systems
With the advantages of low signaling overhead and latency, grant-free random access (GFRA) becomes a promising technology for supporting massive machine-type communications […]
Machine Learning-Aided Piece-Wise Modeling Technique of Power Amplifier for Digital Predistortion
We propose a new power amplifier (PA) behavioral modeling approach, to characterize and compensate for the signal quality degrading effects induced by […]
Joint Estimation of Clustered user Activity and Correlated Channels with Unknown Covariance in mMTC
This paper considers joint user identification and channel estimation (JUICE) in grant-free access with a clustered user activity pattern. In particular, we […]
Multi-User Data Detection in Massive MIMO with 1-Bit ADCS
We provide new analytical results on the uplink data detection in massive multiple-input multiple-output systems with 1-bit analog-to-digital converters. The statistical properties […]
Deep Unfolding-Enabled Hybrid Beamforming Design for mmWave Massive MIMO Systems
Hybrid beamforming (HBF) is a key enabler for millimeter-wave (mmWave) communications systems, but HBF optimizations are often non-convex and of large dimension. […]