Now showing items 41-60 of 254

  • Cooperative AF MIMO wireless relay networks under relay power constraint 

    Lee, Kanghee; Kwon, Hyuck M.; Kim, Hyunggi; Park, Hyuncheol; Lee, Yong H. (IEEE, 2012-11)
    This paper presents an amplify-and-forward (AF) relay scheme for M-source-M-destination pairs and N relay nodes. Cooperative minimum mean square error (MMSE) and zero-forcing (ZF) strategies for wireless relay networks ...
  • Cooperative AF wireless relay strategy under relay power constraint 

    Lee, Kanghee; Kwon, Hyuck M.; Sawan, M. Edwin; Park, Hyuncheol (IEEE, 2013-11)
    This paper presents an optimal relay amplifying matrix based on various schemes, such as zero-forcing (ZF) and minimum mean square error (MMSE), for a cooperative amplify-and-forward (AF) wireless relay network consisting ...
  • Cross-layer analysis of route discovery process and its impact on the packet end-to-end delay in wireless Ad Hoc networks 

    Kadiyala, Murali Krishna; Pendse, Ravi (IEEE, 2006-09-25)
    This paper presents a cross-layer analysis of the route discovery process in ad hoc networks, and discusses the impact of this process on the packet end-to-end delay. The analysis primarily highlights the role of medium ...
  • Data caching for enhancing anonymity 

    Bagai, Rajiv; Tang, Bin (IEEE Computer Society, 2011-03-22)
    The benefits of caching for reducing access time to frequently needed data, in order to improve system performance, are already well-known. In this paper, a proposal for employing data caching for increasing the level of ...
  • Decoupling of large scale systems 

    Shah, Dipak C.; Sawan, M. Edwin; Tran, Minh T. (IEEE, 1984-06-06)
    Linear shift invariant large scale discrete-time multivariable systems whose inputs and outputs are strongly interacted, are considered. The designing of compensators to decouple these systems is presented.
  • Determination of all robustly stabilizing fractional-order PID controllers 

    Lee, Yung K.; Watkins, John Michael (American Society of Mechanical Engineers, 2013)
    In this paper, a method is provided for determining all fractional-order (FO) proportional–integral-derivative (PID) controllers that robustly stabilize a single-input and single-output (SISO) transfer function of arbitrary ...
  • Determination of all stabilizing fractional-order PID controllers that satisfy a robust performance constraint 

    Lee, Yung K.; Watkins, John Michael (IEEE, 2013-06)
    This paper presents a method for finding all stabilizing fractional-order (FO) proportional-integral-derivative (PID) controllers that satisfy a robust performance constraint for a system of integer or non-integer order ...
  • Determination of all stabilizing fractional-order PID controllers that satisfy a weighted sensitivity constraint 

    Lee, Yung K.; Watkins, John Michael (IEEE, 2012)
    This paper presents a method for determining all stabilizing fractional-order (FO) proportional-integral-derivative (PID) controllers that satisfy an H∞ weighted-sensitivity constraint for a system of integer or non-integer ...
  • Determination of all stabilizing PID controllers for time delay systems with Smith predictors 

    Veeramachaneni, Siva Rama Krishna; Watkins, John Michael; Emami, Tooran (American Society of Mechanical Engineers, 2013)
    Time delays in the control loop complicate the analysis and design of controllers. The use of a Smith predictor is a well-known technique for dealing with delays in stable systems. This paper presents a method for finding ...
  • A digital quarter square multiplier 

    Johnson, Everett L. (IEEE, 1980-03)
    An application of the quarter square multiplication technique used in analog computing is proposed for digital multiplication. Significant savings in storage requirements for ROM- implemented product tables are demonstrated. ...
  • Direct implementation of an N-qubit controlled-unitary gate in a single step 

    Kumar, Preethika (Springer, 2013-02)
    We present a new scheme to implement an N-qubit controlled-unitary operation directly in a single step. The main advantage of our scheme is that we do not use conventional gate decomposition protocols to break an N-qubit ...
  • Distributed AF beamforming relay networks under transmit power constraint 

    Lee, Kanghee; Kwon, Llyuck M.; Sawan, M. Edwin; Park, Hyuncheol (IEEE, 2013-11)
    This paper investigates minimum mean square error (MMSE)-based amplify-and-forward (AF) relay amplifying matrices and source/destination beamforming vectors under perfectly known channel state information by imposing ...
  • Distributed AF mobile relay networks in adverse wireless communication environments 

    Lee, Kanghee; Kwon, Hyuck M.; Yang, Jie; Sawan, M. Edwin; Park, Hyuncheol; Lee, Yong H. (IEEE, 2013)
    This paper addresses a more practical relay network consisting of a mobile source, multiple distributed mobile amplify-and-forward (AF) relays, and a mobile destination node. It considers an appropriate channel model between ...
  • Distributed reaction mechanisms to prevent selfish misbehavior in wireless Ad Hoc networks 

    Jaggi, Neeraj; Giri, Vamshikrishna Reddy; Namboodiri, Vinod (IEEE, 2011-12-05)
    We address the issue of misbehavior detection and reaction in IEEE 802.11 based Ad Hoc networks. Selfish misbehavior involves disobeying standard protocol mechanisms to gain unfair access to the channel at the expense of ...
  • Does cognition come at a net energy cost in ad hoc Wireless LANs? 

    Badruddoza, Anm; Namboodiri, Vinod; Jaggi, Neeraj (Elsevier, 2014-02-12)
    Cognitive radios have been proposed in recent years to make more efficient use of the wireless spectrum and alleviate congestion on widely used frequency bands. A key aspect of these radios is the “cognition” gained through ...
  • DSL vs. cable: A comprehensive comparison 

    Jasti, Amarnath; Kalamkar, Anand; Pendse, Ravi (OPNETWORK 2003, 2003-08)
    Internet has become an integral part of today’s human life. Currently e-commerce is one of the fastest growing fields in the economy. While medium and large business establishments can afford dedicated links to connect to ...
  • Dynamical adjustment of block replacement algorithms 

    Walterscheidt, U.; Pendse, Ravi (IEEE, 1998-03-08)
    Block replacement algorithms are an important component of any cache controller, specially for disk caches. In recent years, complex and sophisticated algorithms have been developed, that reduce the miss-rate of disk caches. ...
  • Dynamics and performance of tailless micro aerial vehicle with flexible articulated wings 

    Paranjape, Aditya A.; Chung, Soon-Jo; Hilton, Harry H.; Chakravarthy, Animesh (The American Institute of Aeronautics and Astronautics, 2012-05-05)
    The purpose of this paper is to analyze and discuss the performance and stability of a tailless micro aerial vehicle with flexible articulated wings. The dihedral angles can be varied symmetrically on both wings to control ...
  • Early entry program 

    Pendse, Ravi; Johnson, Everett L. (1994-03)
  • Effect of data transfer on DAS, NAS, and SAN: a comparison 

    Jasti, Amarnath; Obilisetty, S.; Ali, Muhammad Sabeeh; Pendse, Ravi (2004-08)