Showing 1-25 of 60 resultsfor "Authors":"Vineeth Varma"
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Energy-Efficient Time-Triggered Communication Policies for Wireless Networked Control Systems
Vineeth Satheeskumar Varma;André Marcorin de Oliveira;Romain Postoyan;Irinel-Constantin Morărescu;Jamal Daafouz
Energy-efficient communication protocols have become an important topic over the past two decades due to environmental issues, increased monetary costs of energy consumption, and limited battery capacities of sensors and mobile devices. In this context, we present a novel approach to design energy-efficient time-triggered communication policies for wireless networked control systems, while ensurin...Show More
Open Multi-Agent Systems With Discrete States and Stochastic Interactions
IEEE Control Systems Letters
Cited by: Papers (16)
We consider a multi-agent system in which agents arrive and depart from a network randomly as a Bernoulli process. Each agent that is active in the network must decide between two actions represented by 0 or 1. Each active agent then observes the action of a random neighbour and updates its preference towards a certain action. New agents that arrive into the network are activated with a random pre...Show More
Marketing Resource Allocation in Duopolies Over Social Networks
Vineeth S. Varma;Irinel-Constantin Morărescu;Samson Lasaulce;Samuel Martin
IEEE Control Systems Letters
Cited by: Papers (12)
One of the key features of this letter is that the agents' opinion of a social network is assumed to be not only influenced by the other agents but also by two marketers in competition. One of our contributions is to propose a pragmatic game-theoretical formulation of the problem and to conduct the complete corresponding equilibrium analysis (existence, uniqueness, dynamic characterization, and de...Show More
Relay-Assisted Platooning in Wireless Networks: A Joint Communication and Control Approach
Tiago Rocha Gonçalves;Vineeth Satheeskumar Varma;Salah Eddine Elayoubi
This paper addresses the problem of the joint design of the mobile communication system and the control scheme for enabling vehicle platooning applications. Vehicles communicate essential information for platooning control through multi-hop vehicle-to-vehicle (V2V) communications and are assisted in this task by Road Side Units (RSU), when available. While classical approaches, adopted in previous...Show More
Transmission Power Policies for Energy-Efficient Wireless Control of Nonlinear Systems
Vineeth Satheeskumar Varma;Romain Postoyan;Daniel E. Quevedo;Irinel-Constantin Morărescu
We present an emulation-based controller and transmission policy design procedure for nonlinear wireless networked control systems. The objective is to ensure the stability of the closed-loop system, in a stochastic sense, together with given control performance, while minimizing the average power used for communications. The controller is designed by emulation, i.e., ignoring the network, and the...Show More
Network-Aware Controller Design With Performance Guarantees for Linear Wireless Systems
André Marcorin de Oliveira;Vineeth Satheeskumar Varma;Romain Postoyan;Irinel-Constantin Morărescu;Jamal Daafouz;Oswaldo Luiz V. Costa
We investigate discrete-time closed-loop dynamics consisting of a linear plant, a linear controller, and a wireless network that connects the sensors and the actuators to the control unit. The objective, as well as the main contribution of this article, is the static output feedback control synthesis under given network specifications. Precisely, network features are formulated in terms of stochas...Show More
Efficient 3D Placement of UAVs with QoS Assurance in Ad Hoc Wireless Networks
Bhanukiran Perabathini;Kiranteja Tummuri;Achal Agrawal;Vineeth S. Varma
2019 28th International Conference on Computer Communication and Networks (ICCCN)
Year: 2019 | Conference Paper |
Cited by: Papers (18)
In this work, we consider a wireless communication system consisting of multiple rotary-wing unmanned aerial vehicles (UAVs) used as aerial base stations (ABSs) in order to provide downlink connectivity to the user terminals (UEs) on the ground. Towards investigating power efficient deployment strategies for such a system, the contribution of this article is twofold: we formalize the relevant mult...Show More
Emulation-based stabilisation of networked control systems over WirelessHART
Alejandro I. Maass;Dragan Nešić;Romain Postoyan;Peter M. Dower;Vineeth S. Varma
2017 IEEE 56th Annual Conference on Decision and Control (CDC)
Year: 2017 | Conference Paper |
Cited by: Papers (10)
We study the emulation-based stabilisation of nonlinear networked control systems (NCSs) implemented over WirelessHART (WH). WH is a communication protocol widely used in process instrumentation. It is characterised by its multi-hop structure, slotted communication cycles, and simultaneous transmission over different frequencies. To capture most functionalities of WH, faithful models are needed. W...Show More
Energy efficient time-triggered control over wireless sensor/actuator networks
2016 IEEE 55th Conference on Decision and Control (CDC)
Year: 2016 | Conference Paper |
Cited by: Papers (7)
We investigate the scenario where a controller is connected to a plant using a wireless network. Our objective is to design control strategies, which efficiently use the network in terms of energy, by taking into account the fluctuations of the wireless channel. In particular, we consider discrete-time systems and we focus on time-triggered control. That is, we assume that we know a controller, wh...Show More
Modeling stochastic dynamics of agents with multi-leveled opinions and binary actions
2017 IEEE 56th Annual Conference on Decision and Control (CDC)
Year: 2017 | Conference Paper |
Cited by: Papers (6)
A stochastic multi-agent opinion dynamics model is proposed and analyzed, in which, the multi-leveled opinion of each agent is influenced by a random neighbor's binary action, determined by its opinion level. This model is shown to asymptotically produce consensus with a finite number of connected agents. On the other hand, when the number of agents is large, the time to achieve consensus can beco...Show More
Performance of vehicle platooning under different V2X relaying methods
2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Year: 2021 | Conference Paper |
Cited by: Papers (5)
We study in this paper the design of the vehicle-to-everything (V2X) network for vehicle platooning scenarios. We focus on the impact of packet relaying using Road Side Units (RSU) on the application-level performance, namely the inter-vehicle distance in the platoon. The RSU extends the coverage range of the platoon leader and allows handling the well-known Predicted Cooperative Adaptive Cruise C...Show More
Stochastic stabilisation and power control for nonlinear feedback loops communicating over lossy wireless networks
Alejandro I. Maass;Dragan Nešić;Vineeth S. Varma;Romain Postoyan;Samson Lasaulce
2020 59th IEEE Conference on Decision and Control (CDC)
Year: 2020 | Conference Paper |
Cited by: Papers (4)
We study emulation-based stabilisation of nonlinear networked control systems communicating over multiple wireless channels subject to packet loss. Specifically, we establish sufficient conditions on the rate of transmission that guarantee ℒp stability-in-expectation of the overall closed-loop system. These conditions depend on the cumulative dropout probability of the network nodes for static pro...Show More
A Non-Cooperative Resource Utilization Game Between Two Competing Malware
Vineeth S. Varma;Yezekayel Hayel;Irinel-Constantin Morărescu
In this letter, we consider a population of digital nodes (such as phones, computers, etc.) that are under the attack of two competing malware. These malware infect the nodes in order to exploit their computational resources for specific purposes such as mining crypto-currency, cloud computing, etc. We suppose that each virus spreads following the susceptible-infected-susceptible (SIS) compartment...Show More
Cross-layer design for green power control
Vineeth S Varma;Samson Lasaulce;Yezekael Hayel;Salah Eddine Elayoubi;Merouane Debbah
2012 IEEE International Conference on Communications (ICC)
Year: 2012 | Conference Paper |
Cited by: Papers (4)
In this work, we propose a new energy efficiency metric which allows one to optimize the performance of a wireless system through a novel power control mechanism. The proposed metric possesses two important features. First, it considers the whole power of the terminal and not just the radiated power. Second, it can account for the limited buffer memory of transmitters which store arriving packets ...Show More
On the benefits of repeated game models for green cross-layer power control in small cells
Vineeth S. Varma;Mariem Mhiri;Maël Le Treust;Samson Lasaulce;Abdelaziz Samet
2013 First International Black Sea Conference on Communications and Networking (BlackSeaCom)
Year: 2013 | Conference Paper |
Cited by: Papers (4)
In this paper, we consider the problem of distributed power control for multiple access channels when energy-efficiency has to be optimized. In contrast with related works, the presence of a queue at each transmitter is accounted for and globally efficient solutions are sought. To this end, a repeated game model is exploited and shown to lead to solutions which are distributed in the sense of the ...Show More
This paper proposes and analyzes a stochastic multi-agent opinion dynamics model. We are interested in a multi-leveled opinion of each agent which is randomly influenced by the binary actions of its neighbors. It is shown that, as far as the number of agents in the network is finite, the model asymptotically produces consensus. The consensus value corresponds to one of the absorbing states of the ...Show More
Analysis and On/Off Lockdown Control for Time-Varying SIS Epidemics with a Shared Resource
Sebin Gracy;Irinel Constantin Morarescu;Vineeth S. Varma;Philip E. Pare
The paper studies the spread of a virus over a (possibly) time-varying graph, with the spread being (possibly) worsened by the presence of a shared resource. We propose a time-varying susceptible-infected - water-susceptible (SIWS) model, with the water compartment representing the contam-ination level in the shared resource. We say that the system is in the disease-free equilibrium (DFE) if none ...Show More
Performance and design of robust platoons under different communication technologies
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)
Year: 2021 | Conference Paper |
Cited by: Papers (2)
This article studies cooperative vehicle platooning under different communications approaches and introduces a new dynamic control scheme based on the Predicted Cooperative Adaptive Cruise Control (PCACC). We start by a performance comparison of different communication technologies including VLC (Visible Light Communication) and V2V (Vehicle-to-Vehicle), with or without relaying via RSU (Road Side...Show More
Time-based transmission power policies for energy-efficient wireless control of nonlinear systems
Vineeth S. Varma;Romain Postoyan;Daniel E. Quevedo;Irinel-Constantin Morărescu
2020 59th IEEE Conference on Decision and Control (CDC)
Year: 2020 | Conference Paper |
Cited by: Papers (2)
We present a controller and transmission policy design procedure for nonlinear wireless networked control systems. Our objective is to ensure the stability of the closed-loop system, in a stochastic sense, together with given control performance, while minimizing the average power used to generate the communication instants. The controller is designed by emulation, i.e. ignoring the network, and t...Show More
On the energy efficiency of virtual MIMO systems
Vineeth S Varma;Salah Eddine Elayoubi;Merouane Debbah;Samson Lasaulce
2013 IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)
Year: 2013 | Conference Paper |
Cited by: Papers (2)
The major motivation behind this work is to optimize the sleep mode and transmit power level strategies in a small cell cluster in order to maximize the proposed energy efficiency metric. We study the virtual multiple input multiple output (MIMO) established with each base station in the cluster equipped with one transmit antenna and every user equipped with one receive antennas each. The downlink...Show More
Event-Triggered Transmission Policies for Nonlinear Control Systems Over Erasure Channels
Vineeth S. Varma;Romain Postoyan;Daniel E. Quevedo;Irinel-Constantin Morărescu
We investigate the scenario where a controller communicates with a nonlinear plant via a wireless erasure channel. We present an event-based control strategy to stabilize the plant while sporadically using the unreliable wireless network. In particular, control packets may be lost at any time with a certain probability. Consequently, stability is ensured in a stochastic sense. We then compare the ...Show More
AoI-based switching control for safe haptic teleoperation over a wireless network
2024 IEEE 63rd Conference on Decision and Control (CDC)
Year: 2024 | Conference Paper |
In this paper, we propose a switching policy based on the Age of Information (AoI) to enhance safety in haptic teleoperation over a wireless network, which is a key application of interest in upcoming 6G networks. Given the unique challenges of human-in-the-loop scenarios, our focus is on safety-oriented control since imperfect transmissions could introduce safety risks in typical haptic teleopera...Show More
Distributed gradient methods to reach a Nash equilibrium in potential games
Vineeth S. Varma;Jomphop Veetaseveera;Romain Postoyan;Irinel-Constantin Morărescu
2021 60th IEEE Conference on Decision and Control (CDC)
Year: 2021 | Conference Paper |
We study multi-agent optimization problems described by ordinal potential games. The objective is to reach a Nash equilibrium (NE) in a distributed manner. It is well known that an asynchronous best response dynamics (ABRD) will always converge to a pure NE in this case. However, computing the exact best response at every step of the algorithm may be computationally heavy, if not impossible. There...Show More
Linear output regulation of discrete-time networked systems subject to stochastic packet drops
2024 IEEE 63rd Conference on Decision and Control (CDC)
Year: 2024 | Conference Paper |
We investigate a scenario in which a given discretetime controller communicates with a discrete-time plant via a wireless erasure channel in a linear scenario. The controller is designed for the output of the plant to track a periodic reference generated by a finite superimposition of discretetime linear oscillators while rejecting additional disturbances, i.e., to solve an output regulation probl...Show More
Modeling the Influence of Social Networks on Crowdfunding Projects
2024 11th International Conference on Social Networks Analysis, Management and Security (SNAMS)
Year: 2024 | Conference Paper |
This paper introduces a dynamic model designed to quantify the influence of local and global social networks on the success of crowdfunding campaigns. We analyze how social networks dynamically affect crowdfunding outcomes by spreading the campaign information across these networks over time. Under some assumptions of the interaction graph being homogeneous trees, we are able to mathematically cha...Show More
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