Search Results for author: Urbashi Mitra

Found 19 papers, 2 papers with code

Leveraging Digital Cousins for Ensemble Q-Learning in Large-Scale Wireless Networks

1 code implementation12 Feb 2024 Talha Bozkus, Urbashi Mitra

Herein, a novel ensemble Q-learning algorithm that addresses the performance and complexity challenges of the traditional Q-learning algorithm for optimizing wireless networks is presented.

Ensemble Learning Management +1

Multi-Timescale Ensemble Q-learning for Markov Decision Process Policy Optimization

1 code implementation8 Feb 2024 Talha Bozkus, Urbashi Mitra

Reinforcement learning (RL) is a classical tool to solve network control or policy optimization problems in unknown environments.

Q-Learning reinforcement-learning +1

Optimized Parameter Design for Channel State Information-Free Location Spoofing

no code implementations1 Feb 2024 Jianxiu Li, Urbashi Mitra

Numerical results are provided, validating the theoretical analysis and showing that the root-mean-square error for eavesdropper's localization can be more than 150 m with the optimized delay-angle shifts for DAIS.

Interference-Constrained Scheduling of a Cognitive Multi-hop Underwater Acoustic Network

no code implementations4 Dec 2023 Chen Peng, Urbashi Mitra

The network consists of primary and secondary users, with multi-hop transmission adopted for both user types to provide reliable communications.

Scheduling

Channel State Information-Free Location-Privacy Enhancement: Delay-Angle Information Spoofing

no code implementations23 Oct 2023 Jianxiu Li, Urbashi Mitra

In this paper, a delay-angle information spoofing (DAIS) strategy is proposed for location-privacy enhancement.

Channel State Information-Free Location-Privacy Enhancement: Fake Path Injection

no code implementations11 Jul 2023 Jianxiu Li, Urbashi Mitra

Two closed-form, lower bounds on the illegitimate devices' estimation error are derived via the analysis of the Fisher information of the location-relevant channel parameters, thus characterizing the enhanced location-privacy.

Matrix Approximation with Side Information: When Column Sampling is Enough

no code implementations11 Dec 2022 Jeongmin Chae, Praneeth Narayanamurthy, Selin Bac, Shaama Mallikarjun Sharada, Urbashi Mitra

A theoretical spectral error bound is provided, which captures the possible inaccuracies of the side information.

Channel State Information-Free Artificial Noise-Aided Location-Privacy Enhancement

no code implementations27 Oct 2022 Jianxiu Li, Urbashi Mitra

In this paper, an artificial noise-aided strategy is presented for location-privacy preservation.

UAV-aided RF Mapping for Sensing and Connectivity in Wireless Networks

no code implementations6 May 2022 David Gesbert, Omid Esrafilian, Junting Chen, Rajeev Gangula, Urbashi Mitra

The use of unmanned aerial vehicles (UAV) as flying radio access network (RAN) nodes offers a promising complement to traditional fixed terrestrial deployments.

Navigate

Joint Localization and Orientation Estimation in Millimeter-Wave MIMO OFDM Systems via Atomic Norm Minimization

no code implementations2 Mar 2022 Jianxiu Li, Maxime Ferreira Da Costa, Urbashi Mitra

Herein, an atomic norm based method for accurately estimating the location and orientation of a target from millimeter-wave multi-input-multi-output (MIMO) orthogonal frequency-division multiplexing (OFDM) signals is presented.

Atomic Norm Based Localization and Orientation Estimation for Millimeter-Wave MIMO OFDM Systems

no code implementations8 Oct 2021 Jianxiu Li, Maxime Ferreira Da Costa, Urbashi Mitra

Herein, an atomic norm based method for accurately estimating the location and orientation of a target from millimeter-wave multi-input-multi-output (MIMO) orthogonal frequency-division multiplexing (OFDM) signals is presented.

Improved Convergence Rate for a Distributed Two-Time-Scale Gradient Method under Random Quantization

no code implementations28 May 2021 Marcos M. Vasconcelos, Thinh T. Doan, Urbashi Mitra

In particular, we show that the method converges at a rate $O(log_2 k/\sqrt k)$ to the optimal solution, when the underlying objective function is strongly convex and smooth.

Quantization

Common Information Belief based Dynamic Programs for Stochastic Zero-sum Games with Competing Teams

no code implementations11 Feb 2021 Dhruva Kartik, Ashutosh Nayyar, Urbashi Mitra

For this general model, we provide bounds on the upper (min-max) and lower (max-min) values of the game.

Multiagent Systems Systems and Control Systems and Control

Design of false data injection attack on distributed process estimation

no code implementations14 Jan 2021 Moulik Choraria, Arpan Chattopadhyay, Urbashi Mitra, Erik Strom

Each agent node computes an estimate of the process by using its sensor observation and messages obtained from neighboring nodes, via Kalman-consensus filtering.

Adaptive Sampling for Estimating Distributions: A Bayesian Upper Confidence Bound Approach

no code implementations8 Dec 2020 Dhruva Kartik, Neeraj Sood, Urbashi Mitra, Tara Javidi

A Bayesian variant of the existing upper confidence bound (UCB) based approaches is proposed.

Data-driven sensor scheduling for remote estimation in wireless networks

no code implementations5 Dec 2019 Marcos M. Vasconcelos, Urbashi Mitra

Sensor scheduling is a well studied problem in signal processing and control with numerous applications.

Scheduling

Sequential Experiment Design for Hypothesis Verification

no code implementations4 Dec 2018 Dhruva Kartik, Ashutosh Nayyar, Urbashi Mitra

In the exploration phase, selection of experiments is such that a moderate level of confidence on the true hypothesis is achieved.

Two-sample testing

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