Hanoi University of Technology

Displaying 1-7 of 7 results

  • White Papers // Dec 2012

    A New Genetic Algorithm for the Optimal Centralized Wireless Access Network

    The wireless access networks design problem is formulated as a constrained optimization problem, where the goal is to find a network topology such that an objective function is optimized, subject to a set of constraints. The objective function may be the total cost, or some performance measure like utilization, call...

    Provided By Hanoi University of Technology

  • White Papers // Aug 2012

    A New Converge Cast Algorithm: Application of Procedural Distributed Recursive Wave Model and Feedback Function

    The distributed recursive wave is a programming model based on distributed procedure call, allowing distributed algorithm definition using central algorithm. For returning result to calling process, a feedback function is used. Introducing feedback function makes the DRW more complex, but it allows more control on the execution of the DRW...

    Provided By Hanoi University of Technology

  • White Papers // Mar 2012

    On the Performance of the Time Reversal SM-MIMO-UWB System on Correlated Channels

    In this paper, the impact of spatial correlation on the Multi-Input Multi-Output Ultra-Wide Band (MIMO-UWB) system using the Time Reversal (TR) technique is investigated. Thanks to TR, several data streams can be transmitted by using only one antenna in a system named virtual MIMO-TRUWB. Since the virtual MIMO-TR-UWB system is...

    Provided By Hanoi University of Technology

  • White Papers // Jan 2011

    Investigate the Relation Between the Correctness and the Number of Versions of Fault Tolerant Software System

    Today, most industries are highly dependent on computers for their day-to-day functioning. Safe and reliable software operations are significant requirement for many types of systems. For instance, in air traffic control, nuclear safety, high-speed rail, electronic banking, automated manufacturing... The cost and consequence s of these systems failing can range...

    Provided By Hanoi University of Technology

  • White Papers // Aug 2010

    Building the Reliability Prediction Model of Component-Based Software Architectures

    Reliability is one of the most important quality attributes of software. The approach of Reussner provides a way to predict the reliability on the basic of parametric contracts and Markov models. A clear understanding of the reliability from users' point of view has been introduced by Cheung. He states that...

    Provided By Hanoi University of Technology

  • White Papers // Jul 2010

    Speech enhancement using modified IMCRA and OMLSA methods

    In this paper the authors present a speech enhancement method in highly non-stationary noise environments based on modified Improved Minimal Controlled Recursive Averaging (IMCRA) method and Optimal Modified Minimum Mean-Square Error Log-Spectral Amplitude (OMLSA) method. The original OMLSA method, the spectral gain function, which minimizes the mean-square error of the...

    Provided By Hanoi University of Technology

  • White Papers // Jun 2009

    Dynamic Coupling Metrics for Service - Oriented Software

    Service-oriented systems have become popular and presented many advantages in develop and maintain process. The coupling is the most important attribute of services when they are integrated into a system. In this paper, the authors propose a suite of metrics to evaluate service's quality according to its ability of coupling....

    Provided By Hanoi University of Technology

  • White Papers // Dec 2012

    A New Genetic Algorithm for the Optimal Centralized Wireless Access Network

    The wireless access networks design problem is formulated as a constrained optimization problem, where the goal is to find a network topology such that an objective function is optimized, subject to a set of constraints. The objective function may be the total cost, or some performance measure like utilization, call...

    Provided By Hanoi University of Technology

  • White Papers // Jul 2010

    Speech enhancement using modified IMCRA and OMLSA methods

    In this paper the authors present a speech enhancement method in highly non-stationary noise environments based on modified Improved Minimal Controlled Recursive Averaging (IMCRA) method and Optimal Modified Minimum Mean-Square Error Log-Spectral Amplitude (OMLSA) method. The original OMLSA method, the spectral gain function, which minimizes the mean-square error of the...

    Provided By Hanoi University of Technology

  • White Papers // Jun 2009

    Dynamic Coupling Metrics for Service - Oriented Software

    Service-oriented systems have become popular and presented many advantages in develop and maintain process. The coupling is the most important attribute of services when they are integrated into a system. In this paper, the authors propose a suite of metrics to evaluate service's quality according to its ability of coupling....

    Provided By Hanoi University of Technology

  • White Papers // Jan 2011

    Investigate the Relation Between the Correctness and the Number of Versions of Fault Tolerant Software System

    Today, most industries are highly dependent on computers for their day-to-day functioning. Safe and reliable software operations are significant requirement for many types of systems. For instance, in air traffic control, nuclear safety, high-speed rail, electronic banking, automated manufacturing... The cost and consequence s of these systems failing can range...

    Provided By Hanoi University of Technology

  • White Papers // Aug 2010

    Building the Reliability Prediction Model of Component-Based Software Architectures

    Reliability is one of the most important quality attributes of software. The approach of Reussner provides a way to predict the reliability on the basic of parametric contracts and Markov models. A clear understanding of the reliability from users' point of view has been introduced by Cheung. He states that...

    Provided By Hanoi University of Technology

  • White Papers // Mar 2012

    On the Performance of the Time Reversal SM-MIMO-UWB System on Correlated Channels

    In this paper, the impact of spatial correlation on the Multi-Input Multi-Output Ultra-Wide Band (MIMO-UWB) system using the Time Reversal (TR) technique is investigated. Thanks to TR, several data streams can be transmitted by using only one antenna in a system named virtual MIMO-TRUWB. Since the virtual MIMO-TR-UWB system is...

    Provided By Hanoi University of Technology

  • White Papers // Aug 2012

    A New Converge Cast Algorithm: Application of Procedural Distributed Recursive Wave Model and Feedback Function

    The distributed recursive wave is a programming model based on distributed procedure call, allowing distributed algorithm definition using central algorithm. For returning result to calling process, a feedback function is used. Introducing feedback function makes the DRW more complex, but it allows more control on the execution of the DRW...

    Provided By Hanoi University of Technology