Research and Innovation Snapshots

Designing the IZ4 Family of Spreading Codes for the NavIC L1 Signal [P. Vijay Kumar, ECE]

Global Navigation Satellite Systems (GNSS) employ periodic sequences having low correlation, termed as spreading codes, to carry out the satellite…

Two-Timescale Stochastic Recursive Inclusions with Markov Noise [ Shalabh Bhatnagar, CSA]

Stochastic approximation algorithms aim to find the zeros of an objective function whose analytical form is unknown but where noisy…

Transient Stability of Grid Connected Photovoltaic Generations [ Sarasij Das, EE]

To reduce carbon emissions into the environment, some of the conventional Synchronous Generations (SGs) in power systems are being replaced…

Hybrid Beamforming and Spatial Sigma-Delta Quantizers for mmWave MIMO systems [ Sundeep Prabhakar Chepuri, ECE]

Sensor arrays are a key technology with several applications in radar, sonar, microwave imaging, medical ultrasound, and wireless communications, to…

Computational Geometry Meets Multi-Armed Bandits [Rahul Saladi, CSA]

Computational geometry deals with the design and analysis of algorithms for problems which are geometric in nature. Unlike the traditional…

Deep-Interpolation: Fusion of multiple interpolations and CNN to obtain super-resolution [ A. G. Ramakrishnan, EE] [ A. G. Ramakrishnan, EE]

Architectures have been proposed that learn end‐to‐end mapping functions to improve the spatial resolution of natural images. Two arechitectures are proposed. The…

Image reconstruction from sparse Fourier samples using adaptive regularization [Muthuvel Arigovindan, EE]

Magnetic resonance imaging (MRI) is one of the most important medical imaging modalities owing to its non-invasiveness. To effectively use…

Decoding Task-Specific Cognitive States with Slow, Directed Functional Networks in the Human Brain [Sridharan Devarajan, CSA]

Functional MRI (fMRI) is a leading noninvasive technique for mapping functionally connected networks in the human brain. The fMRI hemodynamic…

Platform for Smart Grid Measurements [Gurunath Gurrala, EE and Himanshu Tyagi, ECE]

This work involves design and implementation of a low cost, open-source, heterogeneous, resource-constrained hardware platform called “Parallella” as a measurement…

Soil’s electrical resistivity counters the fury of the lightning current [Udaya Kumar, EE]

In addition to its many benign effects, lightning is one of Mother Nature's serious threats to life and property. Extensive…

Adaptive Extractors and their Application to Leakage Resilient Secret Sharing [Bhavana Kanukurthi]

A Leakage Resilient Secret Sharing (LRSS) is a secure secret sharing scheme, even when the adversary obtains some (bounded) leakage…

CuBERT: BERT for Source Code Understanding [Aditya Kanade, CSA]

A significant advancement in natural-language understanding has come with the development of pre-trained contextual embeddings, such as BERT. BERT is…

Network Resource Provisioning for Tactile Cyber Physical Systems [Chandramani Singh, ESE and T.V. Prabhakar, ESE]

Imagine a person remotely controlling a robot at the wheel of a car or a surgeon remotely controlling a robotic…

ReXPlug: Explainable Recommendation using Plug and Play Language Model [Shirish Shevede, CSA]

Explainable Recommendations provide the reasons behind why an item is recommended to a user, which often leads to increased user satisfaction and…

Balancing Privacy and Accountability in Blockchain Identity Management [Chaya Ganesh, CSA]

To overcome the problem of lack of privacy in the first generation cryptocurrencies such as Bitcoin, Ethereum, etc., several new…

Do deep networks see the way we do? [S. P. Arun, CNS]

In the Thatcher Effect (left), two inverted versions of Margaret Thatcher look deceptively similar, but look dramatically different if you…

Detection of MPLS L3 VPN Misconfiguration [ R C Hansdah, CSA]

Misconfigured MPLS L3 VPNs violate customer's privacy and security. With Multi-VRF feature on the CE, it is now possible to…

Algorithms with Fairness Guarantees [Anand Louis, CSA]

Humans are increasingly relying on algorithms to make decisions. Depending on the data the algorithm is acting on, the output…

OTFS Modulation for 5G and Beyond [A. Chockalingam , ECE]

We have investigated  a new modulation scheme called `Orthogonal Time Frequency Space (OTFS) modulation' suited for communication over high-Doppler channels…

Learning Mixtures of Gaussians via Arithmetic Circuits [Chandan Saha, CSA]

We give an efficient algorithm to solve the moment problem for mixtures of zero-mean Gaussians (in the non-degenerate case). Our…

Gamma oscillations as a biomarker for early diagnosis of Alzheimer’s Disease (AD) [Supratim Ray, CNS]

Electrical signals recorded from the brain often show fluctuations between 30-80 Hz, which is called the gamma rhythm. These can…

Functional verification of asynchronous systems and protocols [ Raghavan K V, CSA]

Asynchronous message-passing systems are employed frequently to implement distributed mechanisms, protocols, and processes. This work addresses the problem of verification…

Questions Related to Anti-Ramsey Numbers [ L. Sunil Chandran, CSA]

The anti-Ramsey number, ar(G, H) is the minimum integer k such that in any edge colouring of G with k…

Instructing Robots through gestures, text and speech [Bharadwaj Amrutur, ECE]

We are exploring the use of gestures and natural language (text to begin with and eventually speech), to instruct robots…

A generalized framework for projection-based methods for sampling in MRI systems [ K. V. S. Hari, ECE]

MRI collects samples in the Fourier domain, called as the k-space. The k-space is traversed along continuous trajectories using varying…

SiC Based Power Converter for High-Speed Switched Reluctance Machine [G Narayanan, EE]

This work is motivated by the requirement of a high-speed generator system for direct-coupled operation with thermal turbomachinery operating at…

Unsupervised Deep Architectures for Attributed Network Embedding [M. Narasimha Murty, CSA]

Outliers can have an adverse effect on the embeddings of the other nodes in a network. This happens because the…

Transient Vector Estimator based Control Scheme for EVs [ L Umanand, ESE]

The drive control schemes for electric vehicles can be classified as scalar and vector control methods. Scalar control methods are…

Multiclass- SVM Relay for Microgrid Protection [ Jayachandra Shenoy, EE]

Our approach to microgrid protection in this paper uses a classification approach using multi-class Support Vector Machine (SVM) for improving…

Robust Quadrupedal Locomotion [Shishir Kolathaya, CSA]

In this work, with a view toward fast deployment of locomotion gaits in low-cost hardware, we use a linear policy…

Machine Learning with Comparisons [Aditya Gopalan, ECE]

Together with graduate student Aadirupa Saha at IISc, Aditya Gopalan's work on online learning with relative preferences has resulted in…

Ballooning Multi-Armed Bandits [Y. Narahari, CSA]

Online platforms such as Q&A forums (e.g. StackExchange, Reddit) receive high volume content that streams in from different sources at…

No reference video quality assessment [ Rajiv Soundararajan, ECE]

We consider the problem of robust no reference (NR) video quality assessment (VQA) where the algorithms need to have good…

An Active Voltage Stabilizer for a DC Microgrid System [Vishnu M. Iyer, EE]

DC microgrids (MG) are becoming popular as they offer several advantages over an AC MG. The interactions among different power…

Development of Microneedles for Painless Drug Delivery [N. S. Dinesh, ESE]

The enormous potential offered by transdermal drug delivery can be exploited well using microneedles which are tiny projections designed to…

Suppression of lower order harmonics for a 42-sided voltage space vector structure [K. Gopakumar, ESE]

The research work proposes an inverter topology for the first time for suppression of all lower order harmonics (5th, 7th,…

Information dissemination on ad-hoc networks [Navin Kashyap, ECE]

Probabilistic forwarding along with coding, as a broadcast mechanism for ad-hoc networks, is energy-efficient compared to many other existing algorithms. Here k message packets…

Giving your co-programmer maximum leeway [ Deepak D’Souza, CSA]

Programs are ubiquitous, be it the browser you are using to read this or the operating system in which the…

Estimating the COVID-19 burden in Karnataka [Rajesh Sundaresan, ECE]

This work, a Karnataka-wide COVID-19 serological survey, provided a wealth of information about the state of the pandemic. It enabled…

Accelerated Aging Studies on HVAC & HVDC Composite Insulators [B. Subba Reddy, EE]

Accelerated aging studies are performed to study the estimated and residual life of transmission composite insulators in service and to…

FaastLane: Accelerating Function-as-a-Service Workflows [Vinod Ganapathy and Arkaprava Basu, CSA]

Function-as-a-service (FaaS) workflows implement application logic by interacting and exchanging data among a set of functions. Contemporary FaaS platforms execute…

UNMASQUE: Shedding Light on Opaque Application Queries [Jayant Haritsa, CSA]

We have defined a new reverse-engineering problem of unmasking SQL queries hidden within database applications, with diverse use-cases ranging from…

Reward Biased Maximum Likelihood Estimate Approach to Online Machine Learning [Rahul Singh, ECE]

We revisit the Reward Biased Maximum Likelihood Estimate (RBMLE) algorithm that was proposed in (Kumar and Becker, 1982) to solve the problem…

Interaction of Electromagnetic Wave with Dielectric Medium having Arbitrarily Time-modulated Permittivity: An FDTD Approach [Debdeep Sarkar, ECE]

The concept of time-varying media (temporal photonic crystals) is recently finding usage in several exotic electromagnetic applications like: parametric amplification,…

AI-driven XraySetu for early-Covid interventions over WhatsApp [Chiranjib Bhattacharyya, CSA]

The project was started by Dr. Geetha Manjunath of Niramai Health and Prof. Chiranjib Bhattacharyya of IISc, in the first…

The Bulk and the Extremes of Minimal Spanning Acycles and Persistence Diagrams of Random Complexes [Gugan Thoppe, CSA]

The expected weight of the Minimum Spanning Tree (MST) in a uniformly weighted graph on $n$ vertices converges to the…

Linear Dynamical Systems with Sparsity Constraints [Chandra R. Murthy, ECE]

Consider a linear dynamical system with sparsity constraints on the system state and/or the inputs applied. Such constraints arise naturally…

Accuracy-Robustness Trade-offs in Data-driven Control [Vaibhav Katewa, ECE]

Despite the widespread use of ML/data-driven algorithms, provable guarantees on their performance are critically lacking, especially when the data originates…

Teaching A GAN what not to learn [ Chandra Sekhar Seelamantula , EE]

Semi-supervised generative adversarial networks (GANs) consist of neural networks tasked with learning the underlying distributions of each class of a…

Combining queueing theory with deep reinforcement learning for scheduling and power control [Vinod Sharma, ECE]

We propose a novel Multicast queue for wireless content centric networks such as Netflix, YouTube etc. We exploit the redundancy…

MM Wave 5G Beam steering Antenna Array [ K J Vinoy, ECE]

An active beam steering antenna array with 64 elements along with associated hardware and control programs was developed at IISc…

Optimal Transmit Antenna Selection in Underlay Spectrum Sharing [Neelesh Mehta, ECE]

Spectrum sharing is essential to meet the ever-increasing demand of high wireless data rates. New wireless standards such as 5G…

Edit Distance between Merge Trees [ Vijay Natarajan, CSA]

Physical phenomena are often modeled as scalar functions. A merge tree is a topological structure which captures the salient features…

Neuromorphic CMOS-MoS2 based hybrid system for low power edge-computing [ Chetan Singh Thakur, ESE]

The brain is an ideal template for next-generation computing architectures. We, at NeuRonICS lab IISc, have developed a hybrid architecture…

Resource Allocation with Reduced Feedback and Distributed Multiple Access in Full-Duplex Cellular and WiFi Systems [Neelesh Mehta, ECE]

Full-duplex promises to double the data rates by enabling simultaneous transmission and reception over the same frequency band. Enabling full-duplex…

Fast Local Page-Tables for Virtualized NUMA Servers with vMitosis [ Gopinath Kanchi, CSA]

Increasing memory heterogeneity mandates careful data placement to hide the non-uniform memory access (NUMA) effects on applications. While NUMA optimizations have…

SFNet: A Computationally Efficient Source Filter Model Based Neural Speech Synthesis [Prasanta Kumar Ghosh, EE]

A reduced-complexity speech synthesizer is developed by reformulating the source-filter model of speech where the excitation signal is modeled as…

Can a Machine Learn Charge Density Waves? [Santanu Mahapatra, ESE]

Charge density wave (CDW) is a quantum mechanical phenomenon, which induces distortion in the crystal structures of some low-dimensional (1D…

Voltage Equalizer for Electrochemical Energy Storages [Vinod John, EE]

A voltage equalizer ensures uniform voltage distribution in a series-connected battery or ultra-capacitor stack to improve its capacity and life…

Privaros: A framework for privacy-compliant delivery drones [Vinod Ganapathy, CSA]

E-commerce companies are poised to use delivery drones to revolutionize how products are delivered to customers. However, these drones come…

Streaming Codes for Low-Latency Communication [Vijay Kumar Panganamala, ECE]

Ensuring reliable communication with low latency, is key to next-generation applications such as interactive voice and video, multiplayer gaming, multiplayer…

Nonlinear optics with emerging two-dimensional materials [Varun Raghunathan, ECE]

Nonlinear optical study of emerging two-dimensional (2D) materials is interesting both for understanding material properties and for building useful photonic…

Open-source modular and reusable compiler infrastructure for MLAI computations [Uday Kumar Bondhugula, CSA]

The highlight has been the creation of an open-source modular and reusable compiler infrastructure for machine learning and artificial computations…

Deep Unsupervised Speech Representation Learning [Sriram Ganapathy, EE]

The performance of speech systems is degraded in the presence of noise. The principle of modulation filtering attempts to remove…

Semi-Supervised Cross-Modal Retrieval With Label Prediction [Soma Biswas, EE]

Cross-modal retrieval with image-text, sketch-image, etc. are gaining increasing importance due to abundance of data from multiple modalities, and applications…

Rate-optimal Coded Quantum Networks [Shayan Srinivasa Garani, ESE]

Rate-optimal Coded Quantum Networks, Eavesdropping and more: We encode k qubits of quantum information over an n-node network, in a…

Coding Analog of Superadditivity using Quantum Tensor Product Codes [Shayan Srinivasa Garani, ESE]

Researchers at PNSI lab led by Prof. Garani are actively involved in the broad areas of research within quantum error…

Phonon limited anisotropic quantum transport in phosphorene field effect transistors [Santanu Mahapatra, ESE]

We develop a computer code, which elucidates the intricate electron-phonon coupling limited quantum transport in two-dimensional material-based nano-scale transistors. Such first-principles-based computational tool…

Next generation Programmable Logic Controller (PLC)  platform hardware [Prabhakar TV, ESE]

Zero Energy Networks (ZEN) laboratory has designed and developed a next generation Programmable Logic Controller (PLC)  platform hardware.  Two product…

The value of timing information in event-triggered control [Pavankumar Tallapragada, EE]

This work demonstrates that in event-triggered control, the timing of the events carries implicit information. In particular, we have found…

Uniqueness of rigid point-cloud registration [Kunal N Chaudhury, EE]

A necessary and sufficient condition for uniquely registering a system of point clouds (whose positions are known in different coordinate…

Ultrafast Charge and Energy Transfer Across van der Waals Heterojunctions [Kausik Majumdar, ECE]

Two-dimensional layered semiconductors, for example, the monolayer transition metal dichalcogenides, serve as excellent platforms to study fundamental properties of exciton…

Optimal Design and Control of Dual Active Bridge DC-DC Converters [Kaushik Basu, EE]

Dual active bridge isolated DC-DC converters are now widely used in medium and high-power applications such as DC distribution systems,…

Optimal Algorithms for Statistical Inference and Learning under Information Constraints [Himanshu Tyagi, ECE]

Classical statistics assumes that data samples are available in their entirety at one place. But what happens when only limited…

Advanced Healthcare Technologies [Hardik J. Pandya, ESE]

The research group at BEES Lab, DESE, is developing advanced healthcare technologies to screen and diagnose breast, oral, and brain…

Novel Thru-Wall Radar-on-chip Technology [Gaurab Banerjee, ECE]

Dr. Gaurab Banerjee and his research group at the ECE department have developed a radar-on-chip technology for thru-wall imaging applications.…

Model-based Simulation Methodology for EMI/EMC [Dipanjan Gope, ECE]

Electromagnetic Interference (EMI) and Electromagnetic Compatibility (EMC) contribute to a significant percentage of compliance failures in the hardware verification stage.…

The Round Complexity of Perfect MPC with Active Security and Optimal Resiliency [Arpita Patra, CSA]

In STOC’88, Ben-Or, Goldwasser, and Wigderson established an important milestone in the field of cryptography by showing that every function…

Hardware-software co-design for easily programmable GPUs [Arkaprava Basu, CSA]

Traditionally, the Central Processing Unit or CPU has been the brain of a computer. In recent times, however, Graphics Processing…

Best Fit Bin Packing with Random Order Revisited [Arindam Khan, CSA]

The bin packing problem is a fundamental problem in combinatorial optimization, where a collection of items has to be packed…

A Vapnik’s Imperative to Unsupervised Domain Adaptation [Ambedkar Dukkipati, CSA]

The success of deep neural networks, in the advancement of AI, can be attributed to models trained on large amounts…

Fairness in an Algorithmic World [Siddharth Barman, CSA]

Siddharth’s recent work considers fairness from a computation lens. For example, one of his recent works shows that one can…

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