Ghent University

Displaying 1-40 of 129 results

  • White Papers // Feb 2014

    BarrierPoint: Sampled Simulation of Multi-Threaded Applications

    Sampling is a well-known technique to speed up architectural simulation of long-running workloads while maintaining accurate performance predictions. A number of sampling techniques have recently been developed that extend well-known single-threaded techniques to allow sampled simulation of multi-threaded applications. Unfortunately, prior work is limited to non-synchronizing applications (e.g., server throughput...

    Provided By Ghent University

  • White Papers // Jan 2014

    Undersubscribed Threading on Clustered Cache Architectures

    Recent many-core processors such as Intel's Xeon Phi and GPGPUs specialize in running highly scalable parallel applications at high performance while simultaneously embracing energy efficiency as a first-order design constraint. The traditional belief is that full utilization of all available cores also translates into the highest possible performance. In this...

    Provided By Ghent University

  • White Papers // Jan 2014

    Workload Design: Selecting Representative Program-Input Pairs

    Having a representative workload of the target domain of a microprocessor is extremely important throughout its design. The composition of a workload involves two issues: which benchmarks to select and which input data sets to select per benchmark. Unfortunately, it is impossible to select a huge number of benchmarks and...

    Provided By Ghent University

  • White Papers // Jan 2014

    Statistical Simulation of Chip Multiprocessors Running Multi-Program Workloads

    In this paper, the authors explore statistical simulation as a fast simulation technique for driving Chip Multi-Processor (CMP) design space exploration. The idea of statistical simulation is to measure a number of important program execution characteristics, generate a synthetic trace, and simulate that synthetic trace. The important benefit is that...

    Provided By Ghent University

  • White Papers // Jan 2014

    Studying Compiler Optimizations on Superscalar Processors Through Interval Analysis

    Understanding the performance impact of compiler optimizations on superscalar processors is complicated because compiler optimizations interact with the micro-architecture in complex ways. This paper analyzes this interaction using interval analysis, an analytical processor model that allows for breaking total execution time into cycle components. By studying the impact of compiler...

    Provided By Ghent University

  • White Papers // Sep 2013

    Self-Sustaining Platforms: A Semantic Workflow Engine

    In this paper, the authors provide a novel semantic workflow system, based on semantic functional service descriptions and a rule file. The workflow engine follows a three-step process. First, it determines for all the resources in its knowledge base the functionality they need to progress in the workflow. This uses...

    Provided By Ghent University

  • White Papers // Jul 2013

    Does IT Matter for Business Process Maturity? A Comparative Study on Business Process Maturity Models

    This paper recalls the business process discussion between Carr, who stated that IT does not matter, and Smith and Finger, who proclaimed the opposite. In the end, both visions agreed that IT (or process deployment) counts, but must follow the business strategy (or process modeling). The present paper broadens the...

    Provided By Ghent University

  • White Papers // Jul 2013

    Fairness-Aware Scheduling on Single-ISA Heterogeneous Multi-Cores

    Single-ISA heterogeneous multi-cores consisting of small and big cores dramatically improve energy- and power-efficiency by scheduling workloads on the most appropriate core type. A significant body of recent work has focused on improving system throughput through scheduling. However, none of the prior work has looked into fairness. Yet, guaranteeing that...

    Provided By Ghent University

  • White Papers // May 2013

    Anycast End-to-end Resilience for Cloud Services over Virtual Optical Networks

    Optical networks are crucial to support increasingly demanding cloud services. Delivering the requested quality of service is key to successfully provisioning end-to-end services in clouds. Therefore, as for traditional optical network services, it is of utter importance to guarantee that clouds are resilient to any failure of either network infrastructure...

    Provided By Ghent University

  • White Papers // May 2013

    Enterprise Architecture Software Tool Support for Small and Medium-Sized Enterprises: EASE

    In the current information society increased attention is being paid to Enterprise Architecture (EA) and accompanying techniques, models and frameworks. CHOOSE is an EA approach focused on and adapted to the characteristics and needs of Small and Medium-sized Enterprises (SMEs). Though these techniques could offer significant benefits to SMEs, hardly...

    Provided By Ghent University

  • White Papers // May 2013

    Current Pitfalls of Business Process Maturity Models: A Selection Perspective

    Business process management is in high demand, but organisations are still struggling to realize it properly. Hence, maturity models have been developed to support the gradual adoption, use and organisational consequences of business process management, and this for both specific business processes and for the whole process portfolio of an...

    Provided By Ghent University

  • White Papers // Apr 2013

    Towards an Integrative Component Framework for Business Models: Identifying the Common Elements Between the Current Business Model Views

    The business model literature has surged since the beginning of this millennium, but is currently characterized by a lack of shared understanding of the concept. This lack of consensus inhibits the effective use of business models for achieving business-IT alignment, which includes both formulating the appropriate Information System (IS) requirements...

    Provided By Ghent University

  • White Papers // Apr 2013

    Restating the Case for Weighted-IPC Metrics to Evaluate Multiprogram Workload Performance

    Metrics for evaluating the performance of multi-program workloads on multicore or multithreaded processors have been subject of a long and still lasting debate. Early studies used the sum of the IPCs of each program, but the researchers argued that this metric favors high-IPC programs and proposed weighted speedup instead. Later,...

    Provided By Ghent University

  • White Papers // Apr 2013

    Development of Software Tool Support for Enterprise Architecture in Small and Medium-Sized Enterprises

    Throughout recent years a lot of research has been done to develop Enterprise Architecture (EA) approaches for large and complex enterprises. Consequently, an array of tools has been developed for these large enterprises to aid in EA management. However, traditional Small and Medium-sized Enterprises (SMEs), which are very important for...

    Provided By Ghent University

  • White Papers // Apr 2013

    The FASTER Vision for Designing Dynamically Reconfigurable Systems

    Extending product functionality and lifetime requires constant addition of new features to satisfy the growing customer needs and the evolving market and technology trends. Software component adaptivity is straightforward but not enough: recent products include hardware accelerators for reasons of performance and power efficiency that also need to adapt to...

    Provided By Ghent University

  • White Papers // Feb 2013

    Scheduling Heterogeneous Multi-Cores Through Performance Impact Estimation (PIE)

    Single-ISA heterogeneous multi-core processors are typically composed of small power-efficient cores and big high-performance cores. The effectiveness of heterogeneous multi-cores depends on how well a scheduler can map workloads onto the most appropriate core type. In general, small cores can achieve good performance if the workload inherently has high levels...

    Provided By Ghent University

  • White Papers // Feb 2013

    Sampled Simulation of Multi-Threaded Applications

    Sampling is a well-known workload reduction technique that allows one to speed up architectural simulation while accurately predicting performance. Previous sampling methods have been shown to accurately predict single-threaded application runtime based on its overall IPC. However, these previous approaches are unsuitable for general multi-threaded applications, for which IPC is...

    Provided By Ghent University

  • White Papers // Feb 2013

    Towards a Formal Framework for Business Models: Identifying and Visualizing the Common Elements Between the Current Business Model Views

    The importance of the business model concept has been risen since the emergence of e-business companies in the beginning of this millennium, who used it as an instrument to convince potential investors of their promising future. However, the underlying economic concepts have a broader applicability as the business model concept...

    Provided By Ghent University

  • White Papers // Dec 2012

    Platform for Real-Time Subjective Assessment of Interactive Multimedia Applications

    With the advent of cloud computing and remote execution of interactive applications, there is a need for evaluating the Quality of Experience (QoE) and the influence on this QoE of network condition variations, media encoding parameter settings and related optimization algorithms. However, current QoE assessment focuses mainly on audiovisual quality...

    Provided By Ghent University

  • White Papers // Oct 2012

    Novel Design Methods and a Tool Flow for Unleashing Dynamic Reconfiguration

    During the last few years, there is an increasing interest in mixing software and hardware to serve efficiently different applications. This is due to the heterogeneity characterizing the tasks of an application which require the presence of resources from worlds, software and hardware. Controlling effectively these resources through an integrated...

    Provided By Ghent University

  • White Papers // Jul 2012

    DYAMAND: DYnamic, Adaptive MAnagement of Networks and Devices

    Consumer devices increasingly are "Smart" and hence offer services that can interwork with and/or be controlled by others. However, the full exploitation of the inherent opportunities this offers, is hurdled by a number of potential limitations. The interface towards the device might be vendor and even device specific, implying that...

    Provided By Ghent University

  • White Papers // Jun 2012

    Enterprise Architecture for Small and Medium Sized Enterprises

    Enterprise Architecture (EA) is used as a holistic approach to keep things aligned in a company. Some emphasize the use of EA to align IT with the business; others see it broader and use it to also keep the processes aligned with the strategy. Although a lot of research is...

    Provided By Ghent University

  • White Papers // Jun 2012

    Smart Technologies for Effective Reconfiguration: The FASTER approach

    Current and future computing systems increasingly require that their functionality stays flexible after the system is operational, in order to cope with changing user requirements and improvements in system features, i.e. changing protocols and data-coding standards, evolving demands for support of different user applications, and newly emerging applications in communication,...

    Provided By Ghent University

  • White Papers // May 2012

    On the Redundant Carrier Distribution for UW-OFDM

    Unique Word (UW) OFDM is a new multicarrier technique that was first introduced in. In this technique, the guard interval is a part of the Inverse FFT (IFFT) output, and is filled with known symbols. To be able to construct - by using an IFFT - a time domain signal...

    Provided By Ghent University

  • White Papers // Apr 2012

    A First-Order Mechanistic Model for Architectural Vulnerability Factor

    Soft error reliability has become a first-order design criterion for modern microprocessors. Architectural Vulnerability Factor (AVF) modeling is often used to capture the probability that a radiation-induced fault in a hardware structure will manifest as an error at the program output. AVF estimation requires detailed microarchitectural simulations which are time-consuming...

    Provided By Ghent University

  • White Papers // Mar 2012

    Pilot-Based ML Estimation in Amplify-and-Forward Cooperative Networks

    Cooperative communication is a promising technique that achieves spatial diversity without requiring multi-antenna receivers. In this paper, the authors consider the cooperative Amplify-and-Forward protocol and assume the channel realizations to be unknown. They study several pilot-based channel estimation strategies at the relay and the destination. The obtained maximum-likelihood estimators are...

    Provided By Ghent University

  • White Papers // Feb 2012

    Automatic Fine-Grained Area Detection for Thin Client Systems

    The widespread availability of cloud infrastructures is fueling new interest in the thin client computing paradigm. However, current thin client protocols are not designed to handle new content types as often encountered in state-of-the-art applications (e.g. multimedia editing, gaming, multimedia playback). Conveying this content using traditional thin client protocols typically...

    Provided By Ghent University

  • White Papers // Feb 2012

    A Mechanistic Performance Model for Superscalar In-Order Processors

    Mechanistic processor performance modeling builds an analytical model from understanding the underlying mechanisms in the processor and provides fundamental insight in program-microarchitecture interactions, as well as microarchitecture structure scaling trends and interactions. Whereas prior work in mechanistic performance modeling focused on superscalar out-of-order processors, this paper presents a mechanistic performance...

    Provided By Ghent University

  • White Papers // Jan 2012

    Speedup Stacks: Identifying Scaling Bottlenecks in Multi-Threaded Applications

    Multi-threaded workloads typically show sublinear speedup on multi-core hardware, i.e., the achieved speedup is not proportional to the number of cores and threads. Sublinear scaling may have multiple causes, such as poorly scalable synchronization leading to spinning and/or yielding, and interference in shared resources such as the Last Level Cache...

    Provided By Ghent University

  • White Papers // Jan 2012

    Resilient Network Dimensioning for Optical Grid/clouds Using Relocation

    In this paper, the authors address the problem of dimensioning infrastructure, comprising both network and server resources, for large-scale decentralized distributed systems such as grids or clouds. They will provide an overview of their work in this area, and in particular focus on how to design the resulting grid/cloud to...

    Provided By Ghent University

  • White Papers // Jan 2012

    Distributed Multi-Agent Algorithm for Residential Energy Management in Smart Grids

    Distributed renewable power generators, such as solar cells and wind turbines are difficult to predict, making the demand-supply problem more complex than in the traditional energy production scenario. They also introduce bidirectional energy flows in the low-voltage power grid, possibly causing voltage violations and grid instabilities. In this paper, the...

    Provided By Ghent University

  • White Papers // Dec 2011

    Design and Evaluation of an Architecture for Future Smart Grid Service Provisioning

    The current Internet evolves to a true Internet of Things where a plethora of heterogeneous devices are connected, communicate with each other and allow the deployment of new intelligent services, creating new ecosystems in diverse domains. One such a domain is the power grid. The increase of distributed renewable electricity...

    Provided By Ghent University

  • White Papers // Dec 2011

    Suitability of the Wireless Testbed W-ILab.t for VANET Research

    Two quite different tools are normally used in the research of Vehicular Ad Hoc NETworks (VANET). Simulators are practical and cost-efficient, but are not entirely accurate representations of the real life situation. Field Operational Tests (FOT) provide exactly the opposite characteristics. A wireless testbed is situated somewhere in between, but...

    Provided By Ghent University

  • White Papers // Dec 2011

    Benchmarking for Wireless Sensor Networks

    While the number of Wireless Sensor Network (WSN) protocols steadily increases, the evaluation methods have largely remained the same. Although experimentally supported research is gaining popularity, protocol evaluation and comparison remains difficult due to a lack of performance analysis methodologies. This paper introduces a wireless-benchmarking workflow that is designed to...

    Provided By Ghent University

  • White Papers // Nov 2011

    Model for Power Consumption of Wireless Access Networks

    The power consumption of wireless access networks will become an important issue in the coming years. In this paper, the power consumption of base stations for mobile WiMAX, fixed WiMAX, UMTS, HSPA, and LTE is modeled and related to the coverage. A new metric, the power consumption per covered area...

    Provided By Ghent University

  • White Papers // Oct 2011

    Improving Energy Efficiency in Optical Cloud Networks by Exploiting Anycast Routing

    Exploiting anycast routing significantly reduces optical network and server energy usage. In this paper, the authors present a case study showing that intelligently selecting destinations and routes thereto, while switching off unused (network) elements, cuts power consumption by around 20% and saves network resources by 29%. Motivated by the fact...

    Provided By Ghent University

  • White Papers // Oct 2011

    Municipal Support of Wireless Access Network Rollout : A Game Theoretic Approach

    Next generation access networks are expected to bring ubiquitous broadband access and have attracted interest of municipal governments. This paper investigates the support by municipal authorities for the rollout of such a city-wide wireless broadband access network. Different business cases for 3G and WiFi operators are developed and it is...

    Provided By Ghent University

  • White Papers // Oct 2011

    Isolation and Resource Efficiency of Virtual Optical Networks

    Virtualization of optical networking infrastructure is considered a fundamental technology in the future Internet. A key principle is that virtual networks are isolated to coexist on a shared physical substrate without interference. Although, a very attractive proposition for virtual network operators and users, in this paper, the authors demonstrate that...

    Provided By Ghent University

  • White Papers // Sep 2011

    Questioning the Design of Business Process Maturity Models

    The importance of business process management goes without saying. As its realization is less straightforward, maturity models have been developed to gradually assess and improve business processes. Although their aim is to assist organizations, the proliferation of maturity models also confuses organizations. They have no overview of existing models and...

    Provided By Ghent University

  • White Papers // Sep 2011

    Efficient Runtime Service Discovery and Consumption With Hyperlinked RESTdesc

    Hyperlinks and forms let humans navigate with ease through websites they have never seen before. In contrast, automated agents can only perform pre-programmed actions on Web services, reducing their generality and restricting their usefulness to a specialized domain. Many of the employed services call themselves RESTful, although they neglect the...

    Provided By Ghent University

  • White Papers // Jul 2012

    DYAMAND: DYnamic, Adaptive MAnagement of Networks and Devices

    Consumer devices increasingly are "Smart" and hence offer services that can interwork with and/or be controlled by others. However, the full exploitation of the inherent opportunities this offers, is hurdled by a number of potential limitations. The interface towards the device might be vendor and even device specific, implying that...

    Provided By Ghent University

  • White Papers // Feb 2012

    Automatic Fine-Grained Area Detection for Thin Client Systems

    The widespread availability of cloud infrastructures is fueling new interest in the thin client computing paradigm. However, current thin client protocols are not designed to handle new content types as often encountered in state-of-the-art applications (e.g. multimedia editing, gaming, multimedia playback). Conveying this content using traditional thin client protocols typically...

    Provided By Ghent University

  • White Papers // Oct 2011

    Isolation and Resource Efficiency of Virtual Optical Networks

    Virtualization of optical networking infrastructure is considered a fundamental technology in the future Internet. A key principle is that virtual networks are isolated to coexist on a shared physical substrate without interference. Although, a very attractive proposition for virtual network operators and users, in this paper, the authors demonstrate that...

    Provided By Ghent University

  • White Papers // Jan 2012

    Resilient Network Dimensioning for Optical Grid/clouds Using Relocation

    In this paper, the authors address the problem of dimensioning infrastructure, comprising both network and server resources, for large-scale decentralized distributed systems such as grids or clouds. They will provide an overview of their work in this area, and in particular focus on how to design the resulting grid/cloud to...

    Provided By Ghent University

  • White Papers // Jan 2012

    Distributed Multi-Agent Algorithm for Residential Energy Management in Smart Grids

    Distributed renewable power generators, such as solar cells and wind turbines are difficult to predict, making the demand-supply problem more complex than in the traditional energy production scenario. They also introduce bidirectional energy flows in the low-voltage power grid, possibly causing voltage violations and grid instabilities. In this paper, the...

    Provided By Ghent University

  • White Papers // Dec 2011

    Design and Evaluation of an Architecture for Future Smart Grid Service Provisioning

    The current Internet evolves to a true Internet of Things where a plethora of heterogeneous devices are connected, communicate with each other and allow the deployment of new intelligent services, creating new ecosystems in diverse domains. One such a domain is the power grid. The increase of distributed renewable electricity...

    Provided By Ghent University

  • White Papers // Dec 2012

    Platform for Real-Time Subjective Assessment of Interactive Multimedia Applications

    With the advent of cloud computing and remote execution of interactive applications, there is a need for evaluating the Quality of Experience (QoE) and the influence on this QoE of network condition variations, media encoding parameter settings and related optimization algorithms. However, current QoE assessment focuses mainly on audiovisual quality...

    Provided By Ghent University

  • White Papers // Oct 2011

    Improving Energy Efficiency in Optical Cloud Networks by Exploiting Anycast Routing

    Exploiting anycast routing significantly reduces optical network and server energy usage. In this paper, the authors present a case study showing that intelligently selecting destinations and routes thereto, while switching off unused (network) elements, cuts power consumption by around 20% and saves network resources by 29%. Motivated by the fact...

    Provided By Ghent University

  • White Papers // May 2011

    Calculating the Minimum Bounds of Energy Consumption for Cloud Networks

    This paper is aiming at facilitating the energy-efficient operation of an integrated optical network and IT infrastructure. In this paper, the authors propose an energy-efficient routing algorithm for provisioning of IT services that originate from specific source sites and which need to be executed by suitable IT resources (e.g. data...

    Provided By Ghent University

  • White Papers // Apr 2011

    Integrated Simulation of Power and Communication Networks for Smart Grid Applications

    Innovative architectures, control mechanisms and network technologies are being proposed to realize the future smart grid. To assess their impact and effectiveness, simulation is key. Simulation in both areas of communication networks as well as power systems has been widely adopted. However, the coupling of those two worlds calls for...

    Provided By Ghent University

  • White Papers // Feb 2011

    Evaluation of Multiple Design Options for Smart Charging Algorithms

    The authors evaluate the impact of limitations that may exist in actual implementations of plug-in electrical vehicle chargers (e.g. no controllable charging current) on smart charging algorithms. They use quadratic programming to control and coordinate the charging of multiple vehicles in order to reduce the peak load and load profile...

    Provided By Ghent University

  • White Papers // Jul 2011

    Intelligent Distributed Multimedia Collection: Content Aggregation and Integration

    People's multimedia content is spread around their home network and content services on the Internet, such as YouTube, Flickr, Facebook. In this paper, the authors present a system that aggregates all the multimedia content of the end user and integrates it into a unified collection for the user's convenience. The...

    Provided By Ghent University

  • White Papers // Oct 2009

    On the Impact of Relocation on Network Dimensions in Resilient Optical Grids

    Optical networks, with their high bandwidths and low latencies, are excellent to support Grid applications, esp. those arising in so-called eScience applications. In this paper, the authors consider the resulting so-called optical grids. They address the issue of resiliency against network failures and show how the Gridspecific anycast principle can...

    Provided By Ghent University

  • White Papers // Mar 2010

    Column Generation for Dimensioning Resilient Optical Grid Networks With Relocation

    Now-a-days, the Quality of Service (QoS) in Optical Grids has become a key issue. An important QoS factor is the resiliency, namely the ability to survive from certain network failures. Although several traditional network protection schemes were devised in the past, they are not optimized for Optical Grids. In an...

    Provided By Ghent University

  • White Papers // Apr 2010

    Bandwidth Reservations in Home Networks: Performance Assessment of UPnP QoS V3

    Service providers are facing the challenge of assuring their users benefit from high quality services, which requires provisioning Quality of Service (QoS) guarantees. In this paper, the authors describe how a Universal Plug-and-Play (UPnP) based home network architecture solves this problem in a heterogeneous home network. They outline how it...

    Provided By Ghent University

  • White Papers // Dec 2009

    Mean Field Calculation for Optical Grid Dimensioning

    For traditional optical network dimensioning, a plethora of algorithms exists to design the amount of network resources required to accommodate a given amount of traffic, expressed as a (source and destination)-based traffic matrix. In optical Grid dimensioning however, the anycast principle applies: Grid users do not really care where exactly...

    Provided By Ghent University

  • White Papers // Apr 2010

    Integrating Personal Media and Digital TV With QoS Guarantees Using Virtualized Set-Top Boxes: Architecture and Performance Measurements

    Now-a-days, users consume a lot of functionality in their home coming from a service provider located in the Internet. While the home network is typically shielded off as much as possible from the 'Outside world', the supplied services could be greatly extended if they were able to use the information...

    Provided By Ghent University

  • White Papers // Aug 2009

    Exploiting Relocation to Reduce Network Dimensions of Resilient Optical Grids

    Optical Grids are widely deployed to solve complex problems the authors are facing today. An important aspect of the supporting network is resiliency i.e. the ability to overcome network failures. In contrast to classical network protection schemes, they will not necessarily provide a back-up path between the source and the...

    Provided By Ghent University

  • White Papers // Jul 2009

    Deflection Routing in Anycast-Based OBS Grids

    Deflection routing is a much-studied contention resolution technique in the context of Optical Burst/Packet Switching networks, as it promises to improve burst blocking performance and may reduce or even eliminate buffer requirements. An OBS-based Grid is frequently based on anycast routing, which holds even greater potential to use the deflection...

    Provided By Ghent University

  • White Papers // Jul 2009

    Trust as Differentiator for Value-Adding Home Service Providers

    The openness of OSGi home service delivery platforms enables a service provider to deploy new services which aggregate services from other providers. Without security measures, each service provider is able to probe the home network, modify the configurations of other services, and (ab)use these services in favor of their own...

    Provided By Ghent University

  • White Papers // Sep 2009

    Design of a Context Aware Multimedia Management System for Home Environments

    The authors present the design, implementation and performance analysis of a multimedia management system for home environments. It enables comprehensive access and control of media that is distributed over multiple devices. Based on automatic discovery of the media servers and renderers (i.e. audio or display devices) through UPnP, their application...

    Provided By Ghent University

  • White Papers // Jul 2009

    Framework for Ubiquitous Discovery and Access to Home Services

    To relieve the end user of the configuration burden that arises when new devices are installed in the (home) network, Service Discovery Protocols (SDP) have been devised. These enable automatic discovery of the services these devices offer. Yet, the existing SDPs are not compatible or interoperable. In this paper, the...

    Provided By Ghent University

  • White Papers // Oct 2009

    Design and Configuration of PCN Based Admission Control in Multimedia Aggregation Networks

    DSL aggregation networks are evolving to the standard platform for the delivery of multimedia services such as television and network based personal video recording. These multimedia services introduce large challenges for network operators as they are sensitive to packet loss. Therefore, admission control mechanisms are required to avoid congestion caused...

    Provided By Ghent University

  • White Papers // May 2013

    Anycast End-to-end Resilience for Cloud Services over Virtual Optical Networks

    Optical networks are crucial to support increasingly demanding cloud services. Delivering the requested quality of service is key to successfully provisioning end-to-end services in clouds. Therefore, as for traditional optical network services, it is of utter importance to guarantee that clouds are resilient to any failure of either network infrastructure...

    Provided By Ghent University

  • White Papers // Jul 2010

    Designing Entanglement-Assisted Quantum Low-Density Parity-Check Codes

    In this paper, the authors develop a general theory for constructing entanglement-assisted quantum Low-Density Parity-Check (LDPC) codes, which is based on combinatorial design theory. Explicit constructions are given for Entanglement-Assisted Quantum Error-Correcting Codes (EAQECCs) with many desirable properties. These properties include the requirement of only one initial entanglement bit, high...

    Provided By Ghent University

  • White Papers // May 2013

    Current Pitfalls of Business Process Maturity Models: A Selection Perspective

    Business process management is in high demand, but organisations are still struggling to realize it properly. Hence, maturity models have been developed to support the gradual adoption, use and organisational consequences of business process management, and this for both specific business processes and for the whole process portfolio of an...

    Provided By Ghent University

  • White Papers // Dec 2009

    Moderate Deviations of Retransmission Buffers Over a Wireless Fading Channel

    The authors study the buffer performance of retransmission protocols over a wireless link. The channel gain is modeled as a discrete-time complex Gaussian model. The advantage of this channel model over simpler alternatives (such as finite-state Markov models) is that the correspondence with the physical situation is more transparent. In...

    Provided By Ghent University

  • White Papers // Feb 2011

    Towards a Deployment Tool for Wireless Access Networks With Minimal Power Consumption

    The power consumption of wireless access networks will become an important issue in the coming years. In this paper, the power consumption of base stations for mobile WiMAX, HSPA, and LTE is modelled. This power consumption is related to the coverage of the base station. The considered technologies are compared...

    Provided By Ghent University

  • White Papers // Feb 2011

    Accurate Assessment of WLAN Exposure in a Wireless Sensor Testbed

    Wireless Local Area Networks (WLANs) are common technology in current office buildings and people are thus exposed to these WLANs during working hours. Moreover, wireless sensor testbeds are already in use by a lot of research institutions worldwide in order to effectively test the wireless protocols or applications in a...

    Provided By Ghent University

  • White Papers // Feb 2011

    General Public Exposure Due to Electromagnetic Fields of New Wireless Technologies in Different Environments

    The WHO International EMF Project RF Research Agenda identified as a research topic a need for measurement surveys to characterize population exposures from all Radio-Frequency (RF) sources, with a particular emphasis on new wireless technologies. There is a need to conduct measurements to assess the typical range of exposures from...

    Provided By Ghent University

  • White Papers // Feb 2011

    Procedure for Assessment of General Public Exposure From WLAN in Offices and in Wireless Sensor Network Testbed

    A fast and accurate measurement procedure to determine experimentally WLAN Radio Frequency (RF) exposure and to test compliance with international guidelines for the general public, is proposed. This is the first paper where all optimal settings for the measurement equipment (sweep time, resolution bandwidth, etc.) are investigated, selected, and validated....

    Provided By Ghent University

  • White Papers // May 2010

    Making a Well-Founded Choice of the Wireless Technology for Train-to-Wayside Data Services

    The provisioning of wireless data services in the railway environment will become increasingly important for train operators and train constructors in the upcoming years. A well-founded choice of the technology to be used for the outdoor network connection is investigated in this paper. Several wireless technologies - including HSPA, E-UTRA...

    Provided By Ghent University

  • White Papers // Jun 2009

    Research and Development of Wireline and Wireless Physical Layer Components and Subsystems

    INTEC design is one of the research groups of the Department of INformation TEChnology (INTEC) at Ghent University and an associated laboratory of IMEC. The INTEC design lab is specialized in the design of high-frequency and high-speed electronic and optoelectronic circuits and systems. It has gained extensive experience by the...

    Provided By Ghent University

  • White Papers // Sep 2009

    Topology Control and Manipulation in a Large Scale Wireless Network Testbed

    While analytical models and well-considered network simulations are invaluable for wireless network researchers, they cannot capture the full complexity and dynamics of the error prone wireless medium. The simplified assumptions that are necessarily used in simulations and calculations often cause unwanted side effects, causing protocols to fail or perform considerably...

    Provided By Ghent University

  • White Papers // Nov 2009

    Game-Theoretic Evaluation of Competing Wireless Access Networks for Offering Mobile Internet

    In this paper a complete business case for the rollout of a municipal wireless access network for offering Mobile Internet is evaluated. Two different business players, a municipality deploying a WiFi network and a Mobile Virtual Network Operator (MVNO) offering 3G femtocells, are considered. A case study is performed in...

    Provided By Ghent University

  • White Papers // Sep 2009

    Human Body Posture Tracking Using Flexible, Wireless and Low-Power Sensor Nodes

    Human posture tracking is performed using several sensor nodes attached to a subject's body. A Kalman filter estimates the orientation of each of the nodes from the outputs of the sensors. This orientation is then mapped to the appropriate bodypart allowing full body posture reconstruction. The design of flexible, wireless...

    Provided By Ghent University

  • White Papers // Dec 2008

    Comparison of FEC and ARQ for Protection of Video Data Over a Wireless Rayleigh Fading Link

    Video content can be provided to an end user by transmitting video data as a sequence of Internet Protocol (IP) packets over the network. When the network contains a wireless link, packet erasures occur because of occasional deep fades. In order to maintain a sufficient video quality at the end...

    Provided By Ghent University

  • White Papers // Sep 2009

    Quality of Service in Heterogeneous Wireless Sensor Networks

    Wireless sensor networks are networks consisting of many tiny and often resource impoverished sensor nodes communicating through a low-power and short-range radio interface. The authors are used for monitoring, building automation, tracking and multimedia services such as voice and video. For many years, the main research focus was on energy...

    Provided By Ghent University

  • White Papers // Sep 2009

    Cross-Network Cooperation Paradigms Supporting Co-Located Heterogeneous Wireless Networks

    Wireless services and wireless devices have become an important part of the people daily life. However, as the number of wireless devices increases, so does the density of co-located devices in home, office, industrial and public environments. This increasing density in combination with the emergence of more and more advanced...

    Provided By Ghent University

  • White Papers // Sep 2009

    Wireless Optical Communication Using Silicon-on-Insulator Technology

    As the data rates are increasing, there is an increasing mismatch between wired and wireless communications. While optical fiber communication easily allows Gigabit-per-second (Gbps) communication, the present mainstream wireless communication, based on a RadioFrequency (RF) carrier at 2.45GHz does only offer several tens up to hundreds Mbps due to the...

    Provided By Ghent University