26 citations · 103 across the 41 of their papers we have counts for
42 papers · 1 filter
Multiple-Function Approximated Coded Computing: Constructions and Error Bounds
Rimpi Borah, Wilton Kim, J. Harshan +2
Coded computing mitigates stragglers in distributed computation. While Lagrange coded computing (LCC) enables exact polynomial computation over finite fields, Berrut approximated c…
Robust Berrut-Approximated Coded Computing via Discrete Cosine Transforms
Rimpi Borah, J. Harshan
Coded computing is a reliable and fault-tolerant paradigm for executing large-scale computational tasks over distributed worker nodes. Among existing coded computing frameworks, Be…
Cooperative Mitigation against Learning-Based Reactive Jammers: Analysis and SDR Validation
Soumita Hazra, J. Harshan
Motivated by recent developments in full-duplex radios, cognitive radios, and data-driven signal-processing, we propose a novel class of reactive jamming adversaries wherein the ad…
Balancing Privacy and Robustness in Coded Computing Under Profiled Workers
Rimpi Borah, J. Harshan, Aaditya Sharma
In distributed computing with untrusted workers, the assignment of evaluation indices plays a critical role in determining both privacy and robustness. In this work, we study how t…
Basis-Spline Assisted Coded Computing: Strategies and Error Bounds
Rimpi Borah, J. Harshan, V. Lalitha
Coded computing has emerged as a key framework for addressing the impact of stragglers in distributed computation. While polynomial functions often admit exact recovery under exist…
Robust Analog Lagrange Coded Computing: Theory and Algorithms via Discrete Fourier Transforms
Rimpi Borah, J. Harshan
Analog Lagrange Coded Computing (ALCC) is a recently proposed computational paradigm wherein certain computations over analog datasets are efficiently performed using distributed w…
On Securing Berrut Approximated Coded Computing Through Discrete Cosine Transforms
Rimpi Borah, J. Harshan
Coded computing is a reliable and fault-tolerant mechanism for implementing large computing tasks over a distributed set of worker nodes. While a majority of coded computing framew…
Network-Centric Countermeasures Against Integrated Sensing Enabled Jamming Adversaries
Soumita Hazra, J. Harshan
Recent developments in Integrated Sensing and Communication have led to new adversarial models in wireless security through Integrated Sensing and Jamming (ISAJ) adversaries. ISAJ…
Helper-Friendly Latency-Bounded Mitigation Strategies against Reactive Jamming Adversaries
Soumita Hazra, J. Harshan
Due to the recent developments in the field of full-duplex radios and cognitive radios, a new class of reactive jamming attacks has gained attention wherein an adversary transmits…
On Securing Analog Lagrange Coded Computing from Colluding Adversaries
Rimpi Borah, J. Harshan
Analog Lagrange Coded Computing (ALCC) is a recently proposed coded computing paradigm wherein certain computations over analog datasets can be efficiently performed using distribu…
On Learning Spatial Provenance in Privacy-Constrained Wireless Networks
Manish Bansal, Pramsu Srivastava, J. Harshan
In Vehicle-to-Everything networks that involve multi-hop communication, the Road Side Units (RSUs) typically aim to collect location information from the participating vehicles to…
Self-Sustainable Key Generation: Strategies and Performance Bounds under DoS Attacks
Rusni Kima Mangang, J. Harshan
Denial-of-Service (DoS) threats pose a major challenge to the idea of physical-layer key generation as the underlying wireless channels for key extraction are usually public. Ident…
On Distribution-Preserving Mitigation Strategies for Communication under Cognitive Adversaries
Soumita Hazra, J. Harshan
In wireless security, cognitive adversaries are known to inject jamming energy on the victim's frequency band and monitor the same band for countermeasures thereby trapping the vic…
One-Hop Listening Based ARQs for Low-Latency Communication in Multi-Hop Networks
Jaya Goel, J. Harshan
Inspired by emerging applications in vehicular networks, we address the problem of achieving high-reliability and low-latency communication in multi-hop wireless networks. We propo…
Hybrid-ARQ Based Relaying Strategies for Enhancing Reliability in Delay-Bounded Networks
Jaya Goel, J. Harshan
Inspired by several delay-bounded mission-critical applications, this paper investigates chase-combining-based hybrid automatic repeat request (CC-HARQ) protocols to achieve high r…
Optimization of ARQ Distribution for HARQ Strategies in Delay-Bounded Networks
Jaya Goel, J. Harshan
Inspired by several delay-bounded mission-critical applications, optimizing the end-to-end reliability of multi-hop networks is an important problem subject to end-to-end delay con…
XOR-Based Codes for Private Information Retrieval with Private Side Information
Murali Krishnan K. H., J. Harshan
We consider the problem of Private Information Retrieval with Private Side Information (PIR-PSI), wherein a user wants to retrieve a file from replication based non-colluding datab…
Path-Aware OMP Algorithms for Provenance Recovery in Wireless Networks
Shilpi Mishra, J. Harshan, Ranjitha Prasad
Low-latency provenance embedding methods have received traction in vehicular networks for their ability to track the footprint of information flow. One such known method is based o…
Minimal Overhead ARQ Sharing Strategies for URLLC in Multi-Hop Networks
Jaya Goel, J. Harshan
The problem of achieving ultra-reliable and low-latency communication (URLLC) in multi-terminal networks has gained traction in the recent past owing to new wireless applications i…
On Opportunistic Selection of Common Randomness and LLR generation for Algebraic Group Secret-Key Generation
Rohit Joshi, J. Harshan
It is well known that physical-layer key generation methods enable wireless devices to harvest symmetric keys by accessing the randomness offered by the wireless channels. Although…
Fast-Forward Relaying Scheme to Mitigate Jamming Attacks by Full-Duplex Radios
Vivek Chaudhary, J. Harshan
In this work, we address reliable communication of low-latency packets in the presence of a full-duplex adversary that is capable of executing a jamming attack while also being abl…
Achievable Rates of Attack Detection Strategies in Echo-Assisted Communication
Mohit Goyal, J. Harshan
We consider an echo-assisted communication model wherein block-coded messages, when transmitted across several frames, reach the destination as multiple noisy copies. We address ad…
Cognitive Radio from Hell: Flipping Attack on Direct-Sequence Spread Spectrum
J. Harshan, Yih-Chun Hu
In this paper, we introduce a strong adversarial attack, referred to as the flipping attack, on Direct-Sequence Spread Spectrum (DSSS) systems. In this attack, the attacker, which…
Insider-Attacks on Physical-Layer Group Secret-Key Generation in Wireless Networks
J. Harshan, Sang-Yoon Chang, Yih-Chun Hu
Physical-layer group secret-key (GSK) generation is an effective way of generating secret keys in wireless networks, wherein the nodes exploit inherent randomness in the wireless c…