National Institute of Technology Calicut

Displaying 1-10 of 10 results

  • White Papers // Sep 2012

    An Efficient PSO Optimized Integration Weight Estimation Using D-Prime Statistics for a Multibiometric System

    The efficiency of a multi-biometric system can be improved by weighting the scores obtained from the degraded modalities in an appropriate manner. In this paper, the authors propose an efficient PSO (Particle Swarm Optimization) based integration weight optimization scheme using d-prime statistics to determine the optimal weight factors for the...

    Provided By National Institute of Technology Calicut

  • White Papers // Feb 2011

    Power Efficient Resource Allocation for Clouds Using Ant Colony Framework

    Cloud computing is one of the rapidly improving technologies. It provides scalable resources needed for the applications hosted on it. As cloud-based services become more dynamic, resource provisioning becomes more challenging. The QoS constrained resource allocation problem is considered in this paper, in which customers are willing to host their...

    Provided By National Institute of Technology Calicut

  • White Papers // Jan 2011

    Secure Internet Connectivity for Dynamic Source Routing (DSR) Based Mobile Ad Hoc Networks

    'Secure routing in Mobile Ad hoc networks' and 'Internet connectivity to Mobile Ad hoc networks' have been dealt separately in the past research. This paper proposes a light weight solution for secure routing in integrated Mobile Ad hoc NETwork (MANET)-Internet. The proposed framework ensures mutual authentication of Mobile Node (MN),...

    Provided By National Institute of Technology Calicut

  • White Papers // Dec 2010

    A Joint ML Estimation Technique for Timing, CFO and Channel for OFDMA Uplink Transmissions

    This paper addresses the issue of joint Maximum-Likelihood (ML) estimation of Carrier Frequency Offset (CFO), timing error and channel response for OFDMA uplink transmissions. A pilot preamble-based approach is proposed that makes use of the concept of signal decomposition. Earlier works have demonstrated that it is possible to decompose the...

    Provided By National Institute of Technology Calicut

  • White Papers // Sep 2010

    Capacity of Underwater Wireless Communication Channel With Different Acoustic Propagation Loss Models

    UnderWater (UW) acoustic networks are generally formed by acoustically connected ocean bottom sensor nodes, autonomous UW vehicles, and surface stations that serve as gateways and provide radio communication links to on-shore stations. UW acoustic sensor networks consist of sensors and vehicles deployed underwater and networked via acoustic links to perform...

    Provided By National Institute of Technology Calicut

  • White Papers // May 2010

    Comparative Analysis of Different Cryptosystems for Hierarchical Mobile IPv6-Based Wireless Mesh Network

    Wireless Mesh Network (WMN) is advocated as the major supporting technology for the next generation wireless Internet satisfying the needs of anywhere-anytime broadband Internet access. In order to support secure ubiquitous communications for mobile users, WMN must have an efficient key setup procedure to secure control packets as well as...

    Provided By National Institute of Technology Calicut

  • White Papers // Dec 2009

    Performance of Blind Successive Interference Canceller for Multi-Carrier CDMA Systems

    An efficient multiple user access over the wireless channel necessitates a communication system design that can overcome the adverse impact of multipath propagation such as Inter Symbol Interference (ISI) and Multiple Access Interference (MAI). This being the objective, a Multi Carrier Code Division Multiple Access (MC-CDMA) communication system is considered...

    Provided By National Institute of Technology Calicut

  • White Papers // Jul 2009

    Implementation of a Purely Hardware-Assisted VMM for X86 Architecture

    Virtualization is a technique for efficient utilization of hardware resources. Virtual Machine Monitor (VMM) is a piece of software which facilitates hardware Virtualization. Software based Virtualization technologies encompass considerable instruction overhead. The authors have implemented a purely hardware-assisted VMM for x86 architecture on AMD Secure Virtual Machine (SVM) to overcome...

    Provided By National Institute of Technology Calicut

  • White Papers // Mar 2009

    An Efficient Approach for Thinning Wireless Mobile Messages

    Increasing popularity and wide usage make wireless mobile devices as quintessential entities of today's network. Formulating a uniform platform for messaging across a wide range of wireless mobile devices with varying standards, is a potential challenge. The eXtensible Markup Language (XML), though a legacy technology still is in use as...

    Provided By National Institute of Technology Calicut

  • White Papers // Dec 2008

    SCAM: Scenario-Based Clustering Algorithm for Mobile Ad Hoc Networks

    This paper proposes a scenario based, adaptive and distributed clustering algorithm SCAM (Scenario-based Clustering Algorithm for Mobile ad hoc networks). A distributed algorithm based on (k, r) − Dominating Set is used for the selection of clusterheads and gateway nodes, here k is the minimum number of clusterheads per node...

    Provided By National Institute of Technology Calicut

  • White Papers // Feb 2011

    Power Efficient Resource Allocation for Clouds Using Ant Colony Framework

    Cloud computing is one of the rapidly improving technologies. It provides scalable resources needed for the applications hosted on it. As cloud-based services become more dynamic, resource provisioning becomes more challenging. The QoS constrained resource allocation problem is considered in this paper, in which customers are willing to host their...

    Provided By National Institute of Technology Calicut

  • White Papers // Sep 2010

    Capacity of Underwater Wireless Communication Channel With Different Acoustic Propagation Loss Models

    UnderWater (UW) acoustic networks are generally formed by acoustically connected ocean bottom sensor nodes, autonomous UW vehicles, and surface stations that serve as gateways and provide radio communication links to on-shore stations. UW acoustic sensor networks consist of sensors and vehicles deployed underwater and networked via acoustic links to perform...

    Provided By National Institute of Technology Calicut

  • White Papers // Jan 2011

    Secure Internet Connectivity for Dynamic Source Routing (DSR) Based Mobile Ad Hoc Networks

    'Secure routing in Mobile Ad hoc networks' and 'Internet connectivity to Mobile Ad hoc networks' have been dealt separately in the past research. This paper proposes a light weight solution for secure routing in integrated Mobile Ad hoc NETwork (MANET)-Internet. The proposed framework ensures mutual authentication of Mobile Node (MN),...

    Provided By National Institute of Technology Calicut

  • White Papers // May 2010

    Comparative Analysis of Different Cryptosystems for Hierarchical Mobile IPv6-Based Wireless Mesh Network

    Wireless Mesh Network (WMN) is advocated as the major supporting technology for the next generation wireless Internet satisfying the needs of anywhere-anytime broadband Internet access. In order to support secure ubiquitous communications for mobile users, WMN must have an efficient key setup procedure to secure control packets as well as...

    Provided By National Institute of Technology Calicut

  • White Papers // Dec 2010

    A Joint ML Estimation Technique for Timing, CFO and Channel for OFDMA Uplink Transmissions

    This paper addresses the issue of joint Maximum-Likelihood (ML) estimation of Carrier Frequency Offset (CFO), timing error and channel response for OFDMA uplink transmissions. A pilot preamble-based approach is proposed that makes use of the concept of signal decomposition. Earlier works have demonstrated that it is possible to decompose the...

    Provided By National Institute of Technology Calicut

  • White Papers // Dec 2009

    Performance of Blind Successive Interference Canceller for Multi-Carrier CDMA Systems

    An efficient multiple user access over the wireless channel necessitates a communication system design that can overcome the adverse impact of multipath propagation such as Inter Symbol Interference (ISI) and Multiple Access Interference (MAI). This being the objective, a Multi Carrier Code Division Multiple Access (MC-CDMA) communication system is considered...

    Provided By National Institute of Technology Calicut

  • White Papers // Mar 2009

    An Efficient Approach for Thinning Wireless Mobile Messages

    Increasing popularity and wide usage make wireless mobile devices as quintessential entities of today's network. Formulating a uniform platform for messaging across a wide range of wireless mobile devices with varying standards, is a potential challenge. The eXtensible Markup Language (XML), though a legacy technology still is in use as...

    Provided By National Institute of Technology Calicut

  • White Papers // Dec 2008

    SCAM: Scenario-Based Clustering Algorithm for Mobile Ad Hoc Networks

    This paper proposes a scenario based, adaptive and distributed clustering algorithm SCAM (Scenario-based Clustering Algorithm for Mobile ad hoc networks). A distributed algorithm based on (k, r) − Dominating Set is used for the selection of clusterheads and gateway nodes, here k is the minimum number of clusterheads per node...

    Provided By National Institute of Technology Calicut

  • White Papers // Jul 2009

    Implementation of a Purely Hardware-Assisted VMM for X86 Architecture

    Virtualization is a technique for efficient utilization of hardware resources. Virtual Machine Monitor (VMM) is a piece of software which facilitates hardware Virtualization. Software based Virtualization technologies encompass considerable instruction overhead. The authors have implemented a purely hardware-assisted VMM for x86 architecture on AMD Secure Virtual Machine (SVM) to overcome...

    Provided By National Institute of Technology Calicut

  • White Papers // Sep 2012

    An Efficient PSO Optimized Integration Weight Estimation Using D-Prime Statistics for a Multibiometric System

    The efficiency of a multi-biometric system can be improved by weighting the scores obtained from the degraded modalities in an appropriate manner. In this paper, the authors propose an efficient PSO (Particle Swarm Optimization) based integration weight optimization scheme using d-prime statistics to determine the optimal weight factors for the...

    Provided By National Institute of Technology Calicut