19 citations · 26 across the 16 of their papers we have counts for
12 papers · 1 filter
Second-Order Asymptotics for Covert Communication over Quasi-Static Multiple-Antenna Fading Channels
Changhong Liu, Jingjing Wang, Qiaosheng Zhang +2
We study the second-order asymptotics of optimal codes for covert communication over quasi-static multi-antenna fading channels, under the covertness metric of Kullback--Leibler (K…
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…
Covert Communication With Mismatched Decoders
Qiaosheng Zhang, Vincent Y. F. Tan
This paper considers the problem of covert communication with mismatched decoding, in which a sender wishes to reliably communicate with a receiver whose decoder is fixed and possi…
Exact Recovery in the General Hypergraph Stochastic Block Model
Qiaosheng Zhang, Vincent Y. F. Tan
This paper investigates fundamental limits of exact recovery in the general d-uniform hypergraph stochastic block model (d-HSBM), wherein n nodes are partitioned into k disjoint co…
Covert Identification over Binary-Input Discrete Memoryless Channels
Qiaosheng Zhang, Vincent Y. F. Tan
This paper considers the covert identification problem in which a sender aims to reliably convey an identification (ID) message to a set of receivers via a binary-input discrete me…
Optimal Change-Point Detection with Training Sequences in the Large and Moderate Deviations Regimes
Haiyun He, Qiaosheng Zhang, Vincent Y. F. Tan
This paper investigates a novel offline change-point detection problem from an information-theoretic perspective. In contrast to most related works, we assume that the knowledge of…
Undetectable Radios: Covert Communication under Spectral Mask Constraints
Qiaosheng, Zhang, Matthieu R. Bloch +2
We consider the problem of covert communication over continuous-time additive white Gaussian noise (AWGN) channels under spectral mask constraints, wherein two legitimate parties a…
Community Detection and Matrix Completion with Social and Item Similarity Graphs
Qiaosheng Zhang, Vincent Y. F. Tan, Changho Suh
We consider the problem of recovering a binary rating matrix as well as clusters of users and items based on a partially observed matrix together with side-information in the form…
Stealthy Communication over Adversarially Jammed Multipath Networks
Jianhan Song, Qiaosheng Zhang, Swanand Kadhe +2
We consider the problem of stealthy communication over a multipath network in the presence of an active adversary. The multipath network consists of multiple parallel noiseless lin…
Covert Communication over Adversarially Jammed Channels
Qiaosheng Zhang, Mayank Bakshi, Sidharth Jaggi
Suppose that a transmitter Alice potentially wishes to communicate with a receiver Bob over an adversarially jammed binary channel. An active adversary James eavesdrops on their co…
Computationally Efficient Covert Communication
Qiaosheng Zhang, Mayank Bakshi, Sidharth Jaggi
In this paper, we design the first computationally efficient codes for simultaneously reliable and covert communication over Binary Symmetric Channels (BSCs). Our setting is as fol…
Coding against a Limited-view Adversary: The Effect of Causality and Feedback
Qiaosheng Zhang, Swanand Kadhe, Mayank Bakshi +2
We consider the problem of communication over a multi-path network in the presence of a causal adversary. The limited-view causal adversary is able to eavesdrop on a subset of link…