44 citations · 71 across the 20 of their papers we have counts for
20 papers
Understanding and Improving Deep Graph Neural Networks: A Probabilistic Graphical Model Perspective
Jiayuan Chen, Xiang Zhang, Yinfei Xu +3
Recently, graph-based models designed for downstream tasks have significantly advanced research on graph neural networks (GNNs). GNN baselines based on neural message-passing mecha…
On DoF of Active RIS-Assisted MIMO Interference Channel with Arbitrary Antenna Configurations: When Will RIS Help?
Shuo Zheng, Bojie Lv, Tong Zhang +4
An active reconfigurable intelligent surface (RIS) has been shown to be able to enhance the sum-of-degrees-of-freedom (DoF) of a two-user multiple-input multiple-output (MIMO) inte…
Covert Communication Gains from Adversary's Uncertainty of Phase Angles
Sen Qiao, Daming Cao, Qiaosheng Zhang +2
This work investigates the phase gain of intelligent reflecting surface (IRS) covert communication over complex-valued additive white Gaussian noise (AWGN) channels. The transmitte…
Optimality of the Proper Gaussian Signal in Complex MIMO Wiretap Channels
Yong Dong, Yinfei Xu, Tong Zhang +1
The multiple-input multiple-output (MIMO) wiretap channel (WTC), which has a transmitter, a legitimate user and an eavesdropper, is a classic model for studying information theoret…
The Generalized Degrees-of-Freedom of the Asymmetric Interference Channel with Delayed CSIT
Tong Zhang, Yufan Zhuang, Yinfei Xu
In this paper, we investigate the generalized degrees-of-freedom (GDoF) of the asymmetric interference channel with delayed channel state information at the transmitter (CSIT), whe…
On Discrete Age of Information of Infinite Size Status Updating System
Jixiang Zhang, Yinfei Xu
In this paper, for the discrete time status updating system with infinite size, we derive the explicit expression of average age of information (AoI), and the AoI's stationary dist…
TextRGNN: Residual Graph Neural Networks for Text Classification
Jiayuan Chen, Boyu Zhang, Yinfei Xu +1
Recently, text classification model based on graph neural network (GNN) has attracted more and more attention. Most of these models adopt a similar network paradigm, that is, using…
Auto-Encoding Score Distribution Regression for Action Quality Assessment
Boyu Zhang, Jiayuan Chen, Yinfei Xu +3
The action quality assessment (AQA) of videos is a challenging vision task since the relation between videos and action scores is difficult to model. Thus, AQA has been widely stud…
New Proofs of Extremal Inequalities With Applications
Yinfei Xu, Guojun Chen
The extremal inequality approach plays a key role in network information theory problems. In this paper, we propose a novel monotone path construction in product probability space.…
On Age of Information for Discrete Time Status Updating System With Ber/G/1/1 Queues
Jixiang Zhang, Yinfei Xu
In this paper, we consider the age of information (AoI) of a discrete time status updating system, focusing on finding the stationary AoI distribution assuming that the Ber/G/1/1 q…
Age of Information in Relay-Assisted Status Updating Systems
Jixiang Zhang, Yinfei Xu
In this paper we consider the age of information (AoI) of a status updating system with a relay, where the updates are delivered to destination either from the direct line or the t…
Robust Graph Learning Under Wasserstein Uncertainty
Xiang Zhang, Yinfei Xu, Qinghe Liu +3
Graphs are playing a crucial role in different fields since they are powerful tools to unveil intrinsic relationships among signals. In many scenarios, an accurate graph structure…
On Secure Degrees of Freedom of the MIMO Interference Channel with Local Output Feedback
Tong Zhang, Yinfei Xu, Shuai Wang +2
This paper studies the problem of sum-secure degrees of freedom (SDoF) of the (M,M,N,N) multiple-input multiple-output (MIMO) interference channel with local output feedback, so as…
Computing the Rate-Distortion Function of Gray-Wyner System
Guojun Chen, Yinfei Xu, Ling Liu +2
In this paper, the rate-distortion theory of the Gray-Wyner lossy source coding system is investigated. For the case of jointly Gaussian distributed sources, we establish an expres…
Characterizing Linear Memory-Rate Tradeoff of Coded Caching: The Case
Daming Cao, Yinfei Xu
We consider the cache problem introduced by Maddah-ali and Niesen [1] for the case, and use the computer-aided approach to derive the tight linear memory-rate trade-o…
Secret Key Generation from Vector Gaussian Sources with Public and Private Communications
Yinfei Xu, Daming Cao
In this paper, we consider the problem of secret key generation with one-way communication through both a rate-limited public channel and a rate-limited secure channels where the p…
Vector Gaussian Successive Refinement With Degraded Side Information
Yinfei Xu, Xuan Guang, Jian Lu +1
We investigate the problem of the successive refinement for Wyner-Ziv coding with degraded side information and obtain a complete characterization of the rate region for the quadra…
On Optimal Fronthaul Compression and Decoding Strategies for Uplink Cloud Radio Access Networks
Yuhan Zhou, Yinfei Xu, Wei Yu +1
This paper investigates the compress-and-forward scheme for an uplink cloud radio access network (C-RAN) model, where multi-antenna base-stations (BSs) are connected to a cloud-com…
The Sum Rate of Vector Gaussian Multiple Description Coding with Tree-Structured Covariance Distortion Constraints
Yinfei Xu, Jun Chen, Qiao Wang
A single-letter lower bound on the sum rate of multiple description coding with tree-structured distortion constraints is established by generalizing Ozarow's celebrated converse a…
Rate Region of the Vector Gaussian CEO Problem with the Trace Distortion Constraint
Yinfei Xu, Qiao Wang
We establish a new extremal inequality, which is further leveraged to give a complete characterization of the rate region of the vector Gaussian CEO problem with the trace distorti…