4 citations · 8 across the 15 of their papers we have counts for
21 papers
Achieving the Exactly Optimal Privacy-Utility Trade-Off with Low Communication Cost via Shared Randomness
Seung-Hyun Nam, Hyun-Young Park, Si-Hyeon Lee
We consider a discrete distribution estimation problem under a local differential privacy (LDP) constraint in the presence of shared randomness. By exploiting the shared randomness…
Trajectory Optimization for Cellular-Enabled UAV with Connectivity and Battery Constraints
Hyeon-Seong Im, Kyu-Yeong Kim, Si-Hyeon Lee
We address the path planning problem for a cellular-enabled unmanned aerial vehicle (UAV) considering both connectivity and battery constraints. The UAV's mission is to expeditious…
Exactly Optimal and Communication-Efficient Private Estimation via Block Designs
Hyun-Young Park, Seung-Hyun Nam, Si-Hyeon Lee
In this paper, we propose a new class of local differential privacy (LDP) schemes based on combinatorial block designs for discrete distribution estimation. This class not only rec…
Multi-User Cooperation for Covert Communication Under Quasi-Static Fading
Jinyoung Lee, Duc Trung Dinh, Hyeonsik Yeom +2
This work studies a covert communication scheme for an uplink multi-user scenario in which some users are opportunistically selected to help a covert user. In particular, the selec…
Anti-Jamming Games in Multi-Band Wireless Ad Hoc Networks
Hyeon-Seong Im, Si-Hyeon Lee
For multi-band wireless ad hoc networks of multiple users, an anti-jamming game between the users and a jammer is studied. In this game, the users (resp. jammer) want to maximize (…
Secrecy Capacity of a Gaussian Wiretap Channel With ADCs is Always Positive
Seung-Hyun Nam, Si-Hyeon Lee
We consider a complex Gaussian wiretap channel with finite-resolution analog-to-digital converters (ADCs) at both the legitimate receiver and the eavesdropper. For this channel, we…
Mobility-Assisted Covert Communication over Wireless Ad Hoc Networks
Hyeon-Seong Im, Si-Hyeon Lee
We study the effect of node mobility on the throughput scaling of the covert communication over a wireless adhoc network. It is assumed that mobile nodes want to communicate ea…
Treating Interference as Noise is Optimal for Covert Communication over Interference Channels
Kang-Hee Cho, Si-Hyeon Lee
We study the covert communication over K-user discrete memoryless interference channels (DM-ICs) with a warden. It is assumed that the warden's channel output distribution induced…
Throughput Scaling of Covert Communication over Wireless Adhoc Networks
Kang-Hee Cho, Si-Hyeon Lee, Vincent Y. F. Tan
We consider the problem of covert communication over wireless adhoc networks in which (roughly) legitimate nodes (LNs) and for non-communicating warden nodes (WNs…
Time-Division is Optimal for Covert Communication over Some Broadcast Channels
Vincent Y. F. Tan, Si-Hyeon Lee
We consider a covert communication scenario where a transmitter wishes to communicate simultaneously to two legitimate receivers while ensuring that the communication is not detect…
Covert Communication with Channel-State Information at the Transmitter
Si-Hyeon Lee, Ligong Wang, Ashish Khisti +1
We consider the problem of covert communication over a state-dependent channel, where the transmitter has causal or noncausal knowledge of the channel states. Here, "covert" means…
The Wiretapped Diamond-Relay Channel
Si-Hyeon Lee, Ashish Khisti
In this paper, we study a diamond-relay channel where the source is connected to relays through orthogonal links and the relays transmit to the destination over a wireless mult…
Exact Moderate Deviation Asymptotics in Streaming Data Transmission
Si-Hyeon Lee, Vincent Y. F. Tan, Ashish Khisti
In this paper, a streaming transmission setup is considered where an encoder observes a new message in the beginning of each block and a decoder sequentially decodes each message a…
Streaming Data Transmission in the Moderate Deviations and Central Limit Regimes
Si-Hyeon Lee, Vincent Y. F. Tan, Ashish Khisti
We consider streaming data transmission over a discrete memoryless channel. A new message is given to the encoder at the beginning of each block and the decoder decodes each messag…
Secure Degrees of Freedom of the Gaussian Diamond-Wiretap Channel
Si-Hyeon Lee, Wanyao Zhao, Ashish Khisti
In this paper, we consider the Gaussian diamond-wiretap channel that consists of an orthogonal broadcast channel from a source to two relays and a Gaussian fast-fading multiple acc…
Noisy Network Coding with Partial DF
Si-Hyeon Lee, Sae-Young Chung
In this paper, we propose a noisy network coding integrated with partial decode-and-forward relaying for single-source multicast discrete memoryless networks (DMN's). Our coding sc…
The Degraded Gaussian Diamond-Wiretap Channel
Si-Hyeon Lee, Ashish Khisti
In this paper, we present nontrivial upper and lower bounds on the secrecy capacity of the degraded Gaussian diamond-wiretap channel and identify several ranges of channel paramete…
A Unified Approach for Network Information Theory
Si-Hyeon Lee, Sae-Young Chung
In this paper, we take a unified approach for network information theory and prove a coding theorem, which can recover most of the achievability results in network information theo…
A New Achievable Scheme for Interference Relay Channels
Byungjun Kang, Si-Hyeon Lee, Sae-Young Chung +1
We establish an achievable rate region for discrete memoryless interference relay channels that consist of two source-destination pairs and one or more relays. We develop an achiev…
Capacity of a Class of Multicast Tree Networks
Si-Hyeon Lee, Sae-Young Chung
In this paper, we characterize the capacity of a new class of single-source multicast discrete memoryless relay networks having a tree topology in which the root node is the source…
Capacity Scaling of Wireless Ad Hoc Networks: Shannon Meets Maxwell
Si-Hyeon Lee, Sae-Young Chung
In this paper, we characterize the information-theoretic capacity scaling of wireless ad hoc networks with randomly distributed nodes. By using an exact channel model from Maxw…