Now showing items 79-98 of 229

  • [2012-03-24] H-SIP Inter-Domain SIP Mobility: Design 

    Abdallah, Chaouki T.; Khoury, Joud S.; Jerez, Henry N.
    Supporting mobility in IP networks is a crucial step towards satisfying the nomadic communication paradigms on the current Internet. The Session Initiation Protocol (SIP) presents one approach towards supporting IP mobility ...
  • [2012-01-26] H∞ filtering of networked systems with time-varying sampling rates 

    Abdallah, Chaouki T.; Borges, Renato A.; Oliveira, Ricardo C.L.F.; Peres, Pedro L.D.
    In this paper, the problem of robust filter design for networked systems with time-varying sampling rate is investigated. The design conditions are obtained by using the Lyapunov theory and the Finsler's Lemma. A robust ...
  • [2012-03-20] H∞ filtering of time-varying systems with bounded rates of variation 

    Abdallah, Chaouki T.; Borges, Renato A.; Oliveira, Ricardo C. L. F.; Peres, Pedro L. D.
    In this paper, the problem of robust filter design for time-varying discrete-time polytopic systems with bounded rates of variation is investigated. The design conditions are obtained by using a parameter-dependent Lyapunov ...
  • [2012-03-23] H∞ Gain Scheduling for Discrete-Time Systems with Control Delays and Time-Varying Parameters: a BMI Approach 

    Abdallah, Chaouki T.; Borges, Renato A.; Oliveira, Ricardo C. L. F.; Peres, Pedro L. D.
    In this paper, the problem of gain scheduling for time-varying systems with time delays is investigated. By using a memory at the feedback loop, a discrete gain scheduled controller which minimizes an upper bound to the ...
  • [2012-03-23] H∞ robust memory controllers for networked control systems: uncertain sampling rates and time delays in polytopic domains 

    Abdallah, Chaouki T.; Borges, Renato A.; Oliveira, Ricardo C. L. F.; Peres, Pedro L. D.
    In this paper, the problem of controller design for networked control systems with time-varying sampling rates and time delays is investigated. By using a memory at the feedback loop, a digital robust controller that ...
  • [2012-04-13] Identification and control methods for high power electron beam-driven microwave tubes 

    Abdallah, Chaouki T.; Yang, Wei; Schamiloglu, E.; Moreland, L.
    The goal of this paper is to introduce some identification and control systems concepts to the field of high power microwave (HPM) tubes. These concepts are well known to the control systems community, but have not yet ...
  • [2012-03-20] Identifier-Based Discovery in Large-Scale Networks 

    Abdallah, Chaouki T.; Khoury, Joud
    The design of any network mechanism that requires collaboration among selfish agents could only benefit from accounting for the complex social and economic interactions and incentives of the agents using the design. This ...
  • [2012-01-26] Identifier-based discovery mechanism design in large-scale networks 

    Abdallah, Chaouki T.; Khoury, Joud
    This paper introduces identifier-based discovery mechanisms in large-scale networks and presents a taxonomy of discovery schemes and proposals based on their business model. The paper poses several questions that are ...
  • [2012-03-23] Impact of Fading Wireless Channel on The Performance of Game Theoretic Power Control Algorithms for CDMAWireless Data 

    Abdallah, Chaouki T.; Hayajneh, Mohammad; Ibrahim, Walid
    Our goal in this paper is to study the performance of the game-theoretic power control algorithms for wireless data introduced by Saraydar et al [1] in two realistic channels: (a1) fast flat fading channel and (a2) Slow ...
  • [2012-04-12] Implementation of a frequency-agile, high power backward wave oscillator 

    Abdallah, Chaouki T.; Schamiloglu, E.; Park, G.T.; Souvalian, V.S.
    Work at the University of New Mexico (UNM) has demonstrated how finite length effects in a high power vacuum backward wave oscillator (BWO) can be exploited to achieve frequency agility for constant beam and magnetic field ...
  • [2012-03-29] Implementation of the load balancing algorithm over a local area network and the internet 

    Abdallah, Chaouki T.; Ghanem, J.; Hayat, M.; Dhakal, S.; Birdwell, J.D.; Chiasson, J.; Tang, Z.
    In this paper, experimental evaluation of the load balancing algorithm in real environments is presented. We emphasize the effects of delays on the exchange of information among nodes, and the constraints these effects ...
  • [2006-03-10] Implementation of Voiceband Modems on a Digital Signal Processor 

    Salazar, Andres C.; Sherman, David; Verma, Shiv; Werner, Jean-Jacques
  • [2012-04-06] Improved sample complexity estimates for statistical learning control of uncertain systems 

    Abdallah, Chaouki T.; Koltchinskii, V.; Ariola, M.; Dorato, P.; Panchenko, D.
    Probabilistic methods and statistical learning theory have been shown to provide approximate solutions to “difficult” control problems. Unfortunately, the number of samples required in order to guarantee stringent performance ...
  • [2012-01-26] Incentivizing Cooperation in Sensor and Control Networks 

    Khoury, J; Abdallah, Chaouki T.; Crichigno, J
    In this paper, we use game theory to model a general participation game for a distributed and dynamic network. Such networks may include sensing and control agents. The main problem we are interested in is how to achieve ...
  • [2012-03-29] The information age: challenges and opportunities for control and engineering 

    Abdallah, Chaouki T.; Birdwell, J. D.; Chiasson, J. N.; Hayat, M. M.; Tang, Z.; White, J.
    The proliferation of computational resources and data networks has enabled the conception and solution of information management problems of an unprecedented scale. These technologies expose vulnerabilities that may be ...
  • [2012-01-26] Information Surfing for Radiation Building 

    Abdallah, Chaouki T.; Cortez, R.A.; Tanner, H.G.; Lumia, R.
    We develop a control scheme for a group of mobile sensors to map radiation over a given planar polygonal region. The advantage of this methodology is that it provides quick situational awareness regarding radiation levels, ...
  • [2012-03-29] Inherent issues in networked control systems: A survey 

    Abdallah, Chaouki T.; Hokayem, Peter E.
    Due to major advancements in the area of networking over the past decade, a new paradigm of control systems has emerged, namely networked control systems. Such systems differ from classical control systems in that their ...
  • [2012-01-31] Innovation and National Economic Strategy 

    Salazar, Andres C.
    In the formulation of a national economic policy today the need to compete in a global knowledge economy has been recognized. The importance of the knowledge services sector now rivals that of materials and products and ...
  • [2012-01-31] Innovation and US Engineering School Ranking 

    Salazar, Andres C.
    An association between the national ranking of a graduate school in engineering and innovation is investigated by product moment analysis and Spearman correlation coefficients. This paper combines school statistical data ...
  • [2012-04-12] Interactive DSP course development/teaching environment 

    Abdallah, Chaouki T.; Arantes, Dalton; Heileman, Gregory L.; Hush, Don R.; Jordan, Ramiro; Lotufo, Roberto; Magotra, Neeraj; Pollard, Howard; Schamiloglu, Edl; Whitman, Robert
    The authors have developed an interactive environment for the creation and maintenance of dynamic, active multimedia-based teaching mechanisms. The environment is designed to be user-friendly and to facilitate the creation ...