1 citations · 2 across the 9 of their papers we have counts for
11 papers
From Classical to Quantum Channels: Achieving Positive Covert Rates
Hassan ZivariFard, Xiaodong Wang, Alexei Ashikhmin
In this paper, we study the conditions under which covert communication at positive rates is feasible over discrete memoryless classical, classical-quantum, and quantum channels. F…
Quantum Advantage in Multiple Access Wiretap Channels with Entangled Transmitters
Hassan ZivariFard, Xiaodong Wang
We investigate secure communication over a classical multiple-access wiretap channel (MAC-WTC), specifically exploring the benefit of shared entanglement between the transmitters.…
Keyless Covert Communication Over Quantum MACs with General Message Sets
Hassan ZivariFard, Xiaodong Wang
We study covert classical communication over quantum multiple-access channels (MACs) with general message sets. Specifically, we consider a fully quantum MAC with arbitrary message…
Covert Communication and Key Generation Over Quantum State-Dependent Channels
Hassan ZivariFard, Rémi A. Chou, Xiaodong Wang
We study covert communication and covert secret key generation with positive rates over quantum state-dependent channels. Specifically, we consider fully quantum state-dependent ch…
Resource Allocation for Positive-Rate Covert Communications Using Optimization and Deep Reinforcement Learning
Yubo Zhang, Hassan ZivariFard, Xiaodong Wang
We aim to achieve keyless covert communication with a positive-rate in Rayleigh block-fading channels. Specifically, the transmitter and the legitimate receiver are assumed to have…
Covert Communication Over a Quantum MAC with a Helper
Hassan ZivariFard, Rémi A. Chou, Xiaodong Wang
We study covert classical communication over a quantum multiple-access channel (MAC) with a helper. Specifically, we consider three transmitters, where one transmitter helps the ot…
Covert Communication via Action-Dependent States
Hassan ZivariFard, Xiaodong Wang
This paper studies covert communication over channels with ADSI when the state is available either non-causally or causally at the transmitter. Covert communication refers to relia…
Secure Source Coding Resilient Against Compromised Users via an Access Structure
Hassan ZivariFard, Remi A. Chou
Consider a source and multiple users who observe the independent and identically distributed (i.i.d.) copies of correlated Gaussian random variables. The source wishes to compress…
Private Information Retrieval with Private Noisy Side Information
Hassan ZivariFard, Remi A. Chou
Consider Private Information Retrieval (PIR), where a client wants to retrieve one file out of files that are replicated in different servers and the client selection must…
Keyless Covert Communication via Channel State Information
Hassan ZivariFard, Matthieu R. Bloch, Aria Nosratinia
We consider the problem of covert communication over a state-dependent channel when the channel state is available either non-causally, causally, or strictly causally, either at th…
Two-Multicast Channel with Confidential Messages
Hassan ZivariFard, Matthieu Bloch, Aria Nosratinia
Motivated in part by the problem of secure multicast distributed storage, we analyze secrecy rates for a channel in which two transmitters simultaneously multicast to two receivers…