2.5k citations · 4.2k across the 68 of their papers we have counts for
62 papers · 1 filter
Phase-Only Zero-Forcing for Secure Wireless Communication in Multi-User Systems
Jordan Hong, Safwan Jamal, Ashish Khisti
Artificial noise (AN) transmission is a physical layer security technique in multi-antenna wireless communication systems. Synthetic noise is broadcast to all receivers except desi…
Information Compression in the AI Era: Recent Advances and Future Challenges
Jun Chen, Yong Fang, Ashish Khisti +3
This survey articles focuses on emerging connections between the fields of machine learning and data compression. While fundamental limits of classical (lossy) data compression are…
Rate-Distortion-Perception Tradeoff for Gaussian Vector Sources
Jingjing Qian, Sadaf Salehkalaibar, Jun Chen +5
This paper studies the rate-distortion-perception (RDP) tradeoff for a Gaussian vector source coding problem where the goal is to compress the multi-component source subject to dis…
Subset Adaptive Relaying for Streaming Erasure Codes
Muhammad Ahmad Kaleem, Gustavo Kasper Facenda, Ashish Khisti
This paper investigates adaptive streaming codes over a three-node relayed network. In this setting, a source transmits a sequence of message packets through a relay under a delay…
Rate-Distortion-Perception Tradeoff Based on the Conditional-Distribution Perception Measure
Sadaf Salehkalaibar, Jun Chen, Ashish Khisti +1
This paper studies the rate-distortion-perception (RDP) tradeoff for a memoryless source model in the asymptotic limit of large block-lengths. The perception measure is based on a…
Adaptive relaying for streaming erasure codes in a three node relay network
Gustavo Kasper Facenda, M. Nikhil Krishnan, Elad Domanovitz +4
This paper investigates adaptive streaming codes over a three-node relayed network. In this setting, a source node transmits a sequence of message packets to a destination through…
Error-correcting codes for low latency streaming over multiple link relay networks
Gustavo Kasper Facenda, Elad Domanovitz, Ashish Khisti +2
This paper investigates the performance of streaming codes in low-latency applications over a multi-link three-node relayed network. The source wishes to transmit a sequence of mes…
Compressing Multisets with Large Alphabets using Bits-Back Coding
Daniel Severo, James Townsend, Ashish Khisti +2
Current methods which compress multisets at an optimal rate have computational complexity that scales linearly with alphabet size, making them too slow to be practical in many real…
Universal Rate-Distortion-Perception Representations for Lossy Compression
George Zhang, Jingjing Qian, Jun Chen +1
In the context of lossy compression, Blau & Michaeli (2019) adopt a mathematical notion of perceptual quality and define the information rate-distortion-perception function, genera…
Three-terminal Erasure Source-Broadcast with Feedback
Louis Tan, Kaveh Mahdaviani, Ashish Khisti Member
We study the effects of introducing a feedback channel in the erasure source-broadcast problem for the case of three receivers. In our problem formulation, we wish to transmit a bi…
Two-terminal Erasure Source-Broadcast with Feedback
Louis Tan, Kaveh Mahdaviani, Ashish Khisti
We study the effects of introducing a feedback channel in the two-receiver erasure source-broadcast problem in which a binary equiprobable source is to be sent over an erasure broa…
Streaming Erasure Codes over Multi-Access Relayed Networks
Gustavo Kasper Facenda, Elad Domanovitz, Ashish Khisti +2
Many emerging multimedia streaming applications involve multiple users communicating under strict latency constraints. In this paper we study streaming codes for a network involvin…
Streaming Erasure Codes over Multi-hop Relay Network
Elad Domanovitz, Ashish Khisti, Wai-Tian Tan +2
This paper studies low-latency streaming codes for the multi-hop network. The source is transmitting a sequence of messages (streaming messages) to a destination through a chain of…
An Explicit Construction of Optimal Streaming Codes for Channels with Burst and Arbitrary Erasures
Damian Dudzicz, Silas L. Fong, Ashish Khisti
This paper presents a new construction of error correcting codes which achieves optimal recovery of a streaming source over a packet erasure channel. The channel model considered i…
Maximal Information Leakage based Privacy Preserving Data Disclosure Mechanisms
Tianrui Xiao, Ashish Khisti
It is often necessary to disclose training data to the public domain, while protecting privacy of certain sensitive labels. We use information theoretic measures to develop such pr…
An Explicit Rate-Optimal Streaming Code for Channels with Burst and Arbitrary Erasures
Elad Domanovitz, Silas L. Fong, Ashish Khisti
This paper considers the transmission of an infinite sequence of messages (a streaming source) over a packet erasure channel, where every source message must be recovered perfectly…
Optimal Multiplexed Erasure Codes for Streaming Messages with Different Decoding Delays
Silas L. Fong, Ashish Khisti, Baochun Li +3
This paper considers multiplexing two sequences of messages with two different decoding delays over a packet erasure channel. In each time slot, the source constructs a packet base…
Optimal Streaming Erasure Codes over the Three-Node Relay Network
Silas L. Fong, Ashish Khisti, Baochun Li +3
This paper investigates low-latency streaming codes for a three-node relay network. The source transmits a sequence of messages (streaming messages) to the destination through the…
A Survey of Physical Layer Security Techniques for 5G Wireless Networks and Challenges Ahead
Yongpeng Wu, Ashish Khisti, Chengshan Xiao +3
Physical layer security which safeguards data confidentiality based on the information-theoretic approaches has received significant research interest recently. The key idea behind…
Optimal Streaming Codes for Channels with Burst and Arbitrary Erasures
Silas L. Fong, Ashish Khisti, Baochun Li +3
This paper considers transmitting a sequence of messages (a streaming source) over a packet erasure channel. In each time slot, the source constructs a packet based on the current…
Bandwidth Adaptive & Error Resilient MBR Exact Repair Regenerating Codes
Kaveh Mahdaviani, Ashish Khisti, Soheil Mohajer
Regenerating codes are efficient methods for distributed storage in storage networks, where node failures are common. They guarantee low cost data reconstruction and repair through…
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…
Product Matrix Minimum Storage Regenerating Codes with Flexible Number of Helpers
Kaveh Mahdaviani, Soheil Mohajer, Ashish Khisti
In coding for distributed storage systems, efficient data reconstruction and repair through accessing a predefined number of arbitrarily chosen storage nodes is guaranteed by regen…
Product Matrix MSR Codes with Bandwidth Adaptive Exact Repair
Kaveh Mahdaviani, Soheil Mohajer, Ashish Khisti
In a distributed storage systems (DSS) with systematic nodes, robustness against node failure is commonly provided by storing redundancy in a number of other nodes and performi…