Institute of Electrical and Electronics Engineers

Displaying 161-200 of 7585 results

  • White Papers // Nov 2012

    Multidimensional Resource Allocation Strategy for High-Speed Railway MIMO-OFDM System

    With the wide deployment of high-speed railway at more than 300 kilometers per hour, providing various services effectively for users in the train becomes both practical demand and interesting challenge for wireless communication. Resource allocation problem in high-speed railway communication system is one of the key issues to improve the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    GROOV: A Geographic ROuting Over VANETs and Its Performance Evaluation

    Owing to the features of erratic speeds and varying topography and requirements of minimum delay and high application reliability in terms of data delivery and security, existing MANET routing protocols prove to be inefficient in VANETs. In acknowledgment to the requirement for new VANET protocols addressing issues of routing, data...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Statistical Characteristics of Wireless Link in Opportunistic Networks

    Opportunistic network is a type of challenged network where an end-to-end path between the source and the destination doesn't exist. The dissemination of the data relies on the encounters of nodes. Link duration time is a main factor in determining the transmission capacity between two encounter nodes in the opportunistic...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Queueing Model and Optimization of Packet Dropping in Real-Time Wireless Sensor Networks

    The authors consider the problem of modeling the transmission of real-time data from a single node of a wireless sensor network to the next hop or access point. Generated packets are placed in a single position buffer and are transmitted over the wireless medium to the next hop, or they...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Packet Loss Bounds for Asynchronous Bufferless Optical Packet Switches with Limited Range Wavelength Converters

    This paper evaluates the performance of an asynchronous Optical Packet Switch (OPS) equipped with Limited Range Wavelength Converters (LRWCs), in terms of Packet Loss Ratio (PLR), when a circular-type wavelength conversion is adopted. Two separate Markov models are proposed to provide the analytical upper and lower bounds values of the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    A Game-theoretic Approach for Cooperative Transmission Strategy in Wireless Networks

    Cooperative Transmission (CT) is a promising technique to improve transmission rate and throughput in wireless networks, and Relay Node (RN) which could provide a good two hop channel plays a key role in CT mode. As a result, most of existing work take the advantage of benefit of RN in...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Performance of Channel Bonding for Opportunistic Spectrum Access Networks

    In this paper the authors propose an analytical framework which allows the investigation of the average channel throughput at the Medium Access Control (MAC) layer for Opportunistic Spectrum Access (OSA) networks with channel bonding enabled. They show that channel bonding is beneficial in certain cases only (e.g. low primary user...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Robust Bandwidth Allocation in Wireless Mesh Network

    Bandwidth allocation is important for a mesh network to meet Quality of Service (QoS) requirements of the users. This bandwidth allocation has to ensure that the maximum throughput is achieved. However, this problem becomes more challenging when the information about a network (e.g., channel quality and hence link capacity) is...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Service Provisioning in Virtualization-based Cloud Computing: Modeling and Optimization

    Cloud computing is an emerging computing paradigm that may change the way how information services are provisioned. Network virtualization plays a crucial role in a Cloud environment for virtualizing various network infrastructures as services. Therefore virtual network services should be integrated with Cloud service to form the composite Cloud service....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Cooperative Communications: from Theory to Experimental Implementation

    Over the last years, cooperative communications have been studied from both fundamental and practical points of view. However, most of the existing studies of cooperative communications rely on math or computer simulation. In this paper, the authors describe the implementation of a cooperative communication strategy for wireless networks in a...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    ANFIS-based Quality Prediction Models for AMR Telephony in Public 2G/3G Mobile Networks

    The scope of this research paper is the proposal of voice quality prediction models, based on Adaptive Neuro-Fuzzy Inference Systems (ANFIS), for Adaptive Multi Rate (AMR) telephony service provided by GSM and UMTS rollout public land mobile networks. For the scope of the authors' research they performed an experimental drive-test...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Opportunistic Network and Erasure Coding for Asynchronous Two-Way Relay Networks

    When deploying network coding in a two-way data exchange via a relay, time asynchronism is a practical concern requiring special treatment. If two terminal nodes generate traffic flows with the same average rate and random arrival times, in order to use network coding based on XOR-ing of packets at the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Design and Analysis for Reliable Broadcast Transmission in Energy Harvesting Networks

    In this paper, the authors study the reliable broadcast transmission in energy harvesting networks. In addition to employ the erasure-based coding scheme to cope with the packet loss, they deal with the main challenge posed to a reliable transmission in energy harvesting networks: energy deficiency. It refers that the energy...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Intelligent Routing in Congested Approximate Flow-Aware Networks

    A new algorithm for intelligent routing in Approximate Flow-Aware Networks (AFAN) is presented and analyzed in the paper. In contrast to basic AFAN, where cross-protect routers block excessive traffic under congestion, it assumes a possibility of using other routes to destination nodes based on the idea similar to load balancing....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    IPTV QoS and QoE Measurements in Wired and Wireless Networks

    Internet Protocol Television or IPTV is a multimedia content delivery service that is increasingly proliferating in the consumers lives and a hot-topic for telecommunication companies to gain a share on consumers' entertainment budget. This alternate method of distributing television content over IP requires a high level of network performance and...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Link Adaptation Algorithms for Channel Estimation Error Mitigation in LTE systems

    In Long Term Evolution (LTE) systems, the evolved Node B (eNodeB) performs link adaptation to improve the system performance on the basis of channel quality information estimated and feedback by the User Equipments (UEs). However, the Channel Estimation Error (CEE) cannot be avoided due to hardware constraint. To make up...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    QoS Provisioning and Policy Management in a Broker-based CR Network Architecture

    The paper presents an infrastructure-based cognitive radio network architecture that enables for TV white spaces exploitation, QoS provisioning and policy management, under the real time secondary spectrum market policy. It describes the configuration of a spectrum broker that coordinates the Radio Resource Management process (RRM) among LTE secondary systems as...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Traffic Generator using Perlin Noise

    Study of high speed networks such as optical next generation burst or packet switched networks require large amounts of synthetic traffic to feed simulators. Methods to generate self-similar long range dependent traffic already exist but they usually work by generating large blocks of traffic of fixed time duration. This limits...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Cooperative On-Demand Delivery for IPTV Networks

    In this paper, the authors investigate the use of cooperative transmission strategies to support timely and efficient delivery of on-demand content to end users. Within the proposed framework, a cooperative transmission strategy suggests that users who have access to the requested content cooperatively transmit to the targeted users to minimize...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Resource Management for Macrocell Users in Hybrid Access Femtocells

    The constant evolution of mobile-phone traffic demands for novel networking solutions especially focused on indoor environment. In this paper, the use of femtocells, i.e., cells with very limited coverage area, has been proposed. In this paper, a femtocell network with hybrid access control mode is considered. The activity profile of...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    SDRE: Selective Data Redundancy Elimination for Resource Constrained Hosts

    Data Redundancy Elimination (DRE), also known as data de-duplication, reduces the data amount to be transferred or stored by identifying and eliminating both intra-object and inter-object duplicated data elements. It is one of the key content delivery acceleration techniques over Wide Area Networks (WANs) to reduce delivery latency and bandwidth...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Quantifying and Mitigating IGMP Filtering in Topology Discovery

    Recent developments in router level topology discovery have suggested the introduction of IGMP probing in addition to standard techniques such as traceroute and alias resolution. With a single IGMP probe, one can obtain all multicast interfaces and links of a multicast router. If such a probing is a promising approach,...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Optimal Algorithms for Near-Hitless Network Restoration via Diversity Coding

    Diversity coding is a network restoration technique which offers near-hitless restoration, while other state-of-the-art techniques are significantly slower. Furthermore, the extra spare capacity requirement of diversity coding is competitive with the others. Previously, the authors developed heuristic algorithms to employ diversity coding structures in networks with arbitrary topology. This paper...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Resource Constrained Failure Management in Networked Computing Systems

    The authors examine the problem of fault detection in networked computing systems and highlight the tradeoff between diagnosing/reacting to potentially harmful real-time events and minimizing the number of times the system is reset or scanned for malicious activity. The various health states of a system are modeled as states in...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    A Reliability Analysis of Datacenter Topologies

    The network infrastructure plays an important role for datacenter applications. Therefore, datacenter network architectures are designed with three main goals: bandwidth, latency and reliability. This paper focuses on the last goal and provides a comparative analysis of the topologies of prevalent datacenter architectures. Those architectures use a network based only...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Multiplexing-Diversity Balanced Cooperative Wireless Cellular Networks Based on Alamouti Space Time Code for Multimedia Transmission

    In this paper, an Alamouti space time based cooperative wireless cellular network for multimedia transmission is proposed. According to various requirements of text, voice, image, video or medical signal transmissions, this multiplexing-diversity balanced structure is provided for such comprehensive multimedia transmission in wireless cellular networks. Simulation results of this Alamouti...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Benchmarking of Compressed DFAs for Traffic Identification: Decoupling Data Structures from Models

    Current network traffic analysis systems heavily rely on Deep Packet Inspection (DPI) techniques, such as Finite Automata (FA), to detect patterns carried by regular expression (regex). However, traditional Finite Automata cannot keep up with the ever-growing speed of the Internet links. Although there are a number of efficient FA compressing...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    An Empirical Study of Effective Capacity Throughputs in 802.11 Wireless Networks

    Current literature defines the effective capacity of a wireless link as the maximum throughput that can be supported while meeting specific Quality of Service targets on packet delay. This metric can be harnessed for a wide variety of QoS control routines within wireless networks such as traffic optimization and delay...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Efficient DFA Grouping for Traffic Identification

    Traffic Identification is a key function performed by Internet Service Providers' (ISP) administrators to evaluate and improve network services. However, traffic identification needs to be done in real-time and at wire speed to be useful for network tuning. Deep Packet Inspection (DPI) is widely used for identifying normal applications and...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    QoS-aware Cross-layer Design in Multirate Wireless Networks with ARQ Feedback Delay

    To achieve higher throughput and guarantee Quality of Service (QoS), the authors analyze the queue model with Adaptive Modulation and Coding (AMC) and truncated Automatic Repeat reQuest (ARQ) protocol and develop a cross-layer scheme, where the feedback delay of ACK/NAK from receiver is considered. When the delay of ACK/NAK feedback...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    A Weight-Optimized Source Rate Optimization Approach in Energy Harvesting Wireless Sensor Networks

    Using harvest-able energy in Wireless Sensor Networks (WSNs) has gained considerable popularity recently. However, how to utilize the unstable power supply to achieve quality performance is still a challenge. In this paper, the authors propose a Weight-Optimized Source Rate Optimization (WOSRO) approach which allows the WSN system to adaptively control...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Effective Capacity Region in a Wireless Multiuser OFDMA Network

    The wireless multiuser Orthogonal Frequency Division Multiple Access (OFDMA) network in the fading channels with statistical Quality of Service (QoS) requirements is studied in this paper. Considering the statistical QoS requirement as a system performance metric, the concept of the effective capacity is introduced and the effective capacity region is...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    A Bankruptcy Game Approach for Resource Allocation in Cooperative Femtocell Networks

    Femtocells have recently appeared as a viable solution to enable broadband connectivity in mobile cellular networks. Instead of redimensioning macrocells at the base station level, the modular installation of short-range access points can grant multiple benefits, provided that interference is efficiently managed. In the case where femtocells use different frequency...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Relay Power Allocation in Auction-based Game Approach

    In this paper, with respect to the uncertainty about the individual information, they investigate the relay power allocation problem from the energy-efficient, Pareto optimal, and competitive fairness perspective. At first, they design an easy implementation energy efficiency metric, which aims at striking a balance between the QoS provisioning and the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Sensor and Channel Selection for Cooperative Sensing in Multichannel Cognitive Radio Systems

    This paper investigates the issue of how to balance the tradeoff between sensing performance and sensing costs/rewards for cooperative sensing in a multichannel cognitive radio system. Two cases of practical interest are studied. In the first case, the number of available sensors is assumed to be sufficient for detecting available...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Coalition Graph Game for Joint Relay Selection and Resource Allocation in Cooperative Cognitive Radio Networks

    Cooperative relaying technology among Secondary Users (SUs) in Cognitive Radio Networks (CRN) is shown to yield a significant performance improvement, such as improving spectrum utilization as well as system fairness in CRN. This paper investigates the problem of the relay selection and resource allocation in a downlink OFDMA cognitive relay...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Multihop Relay-Aided Multicast Scheduling for Cellular Wireless Networks

    Efficient multicasting of critical messages is of essential importance in public safety and commercial multimedia cellular networks. The authors study the effectiveness of using relay stations to enhance the spectral efficiency of multicast distribution in a mobile wireless networks. Coloring oriented adaptive rate scheduling algorithms are considered, including such that...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    On Providing Bounded Delay Service to Subscribers in P2P Live Streaming Systems

    It is challenging to provide delay-bounded service in a large-scale P2P live streaming system since a P2P streaming system is not scalable from the perspective of playback delay. However, certain peers called subscribers are more sensitive to playback delay than other peers, and the violation of the delay bound dramatically...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    Understanding the Topologies of BitTorrent Networks: A Measurement View

    BitTorrent (BT) is one of the most popular Peer-to-Peer (P2P) network applications. Most characteristics (except the topology) of BT network have been examined extensively by measurement approaches. In this paper, the authors deploy a measurement system to study the performance-related properties of BT topologies. They also use their measurement system...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2012

    A Playback Length Changeable Chunk Scheduling Algorithm for SVC based P2P Streaming Systems

    The PLCS (Playback Length Changeable Segmentation) algorithm was proposed to improve the success delivery rate of chunks in some important layers including the base layer for SVC based P2P streaming systems. In this paper, the authors make further research and propose a corresponding chunk scheduling algorithm named PLCCS (Playback Length...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jun 2009

    Statistical QoS Routing for IEEE 802.11 Multihop Ad Hoc Networks

    In this paper, authors propose a model-based Quality-of-Service (QoS) routing scheme for IEEE 802.11 ad hoc networks. Unlike most of QoS routing schemes in the literature, the proposed scheme provides stochastic end-to-end delay guarantees, instead of average delay guarantees, to delay-sensitive bursty traffic sources. Via a cross-layer design approach, the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Aug 2009

    Differentiated Quality of Service in Survivable WDM Mesh Networks

    The emerging next generation optical transport WDM networks, with reconfigurable optical switches, offer a promising solution to the ever-increasing demand for high bandwidth and flexible connectivity. In order to meet the needs of such a demand, the trend in current backbone and access network development is moving toward a unified...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jul 2010

    A Scalable QoS Scheduling Architecture for WiMAX Multi-Hop Relay Networks

    WiMAX Mobile Multi-hop Relay (MMR) network has been introduced to increase the capacity and extend the coverage area of a single WiMAX Base Station (BS) by the use of a Relay Station (RS). WiMAX provides broadband access for services having different QoS requirements and different traffic priorities. However, it is...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2009

    Coordinated Beamforming for the Multicell Multi-Antenna Wireless System

    In a conventional wireless cellular system, signal processing is performed on a per-cell basis; out-of-cell interference is treated as background noise. This paper considers the benefit of coordinating base-stations across multiple cells in a multi-antenna beamforming system, where multiple base-stations may jointly optimize their respective beamformers to improve the overall...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Aug 2009

    HermesC: Low-Power Wireless Neural Recording System for Freely Moving Primates

    Neural prosthetic systems have the potential to restore lost functionality to amputees or patients suffering from neurological injury or disease. Current systems have primarily been designed for immobile patients, such as tetraplegics functioning in a rather static, carefully tailored environment. However, an active patient such as amputee in a normal...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2010

    Distributed Middleware Services Composition and Synthesis Technology

    The highly distributed and resource con-strained nature of computing in Networked Embedded Systems necessitates an application specific middleware a kind of distributed operating system that provides global services for the application. This paper proposes to automatically synthesize the middleware, platform-independent algorithm models. The modeling language captures the temporal and computational...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2010

    A Dynamic Warehouse for XML Data of the Web

    Xyleme is a dynamic warehouse for XML data of the Web supporting query evaluation, change control and data integration. The authors briefly present the motivations, the general architecture and some aspects of Xyleme. The project the authors describe here was completed at the end of 2000. A prototype has been...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2009

    A Decade of XML Data Management : An Industrial Experience Report From Oracle

    XML and its related technologies have now been in use for almost a decade. There has been considerable amount of effort both from research and industry focusing on XML, XQuery/XPath, XSLT and SQL/XML processing in the database. Many research prototypes and industrial products have been built to satisfy the XML...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Dec 2009

    Description and Analysis of Embedded Firewall Techniques

    With the turn of this century, many researchers started showing interest in Embedded Firewall (EF) implementations. These are not the usual firewalls that are used as checkpoints at network gateways. They are, rather, applied near those hosts that need protection. Hence by using them, individual or grouped network components can...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jul 2009

    A General Framework for Benchmarking Firewall Optimization Techniques

    Firewalls are among the most pervasive network security mechanisms, deployed extensively from the borders of networks to end systems. The complexity of modern firewall policies has raised the computational requirements for firewall implementations, potentially limiting the throughput of networks. Administrators currently rely on ad hoc solutions to firewall optimization. To...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2009

    QoS Support in MANETs: A Modular Architecture Based on the IEEE 802.11e Technology

    Providing Quality-of-Service (QoS) in wireless ad hoc networks is an intrinsically complex task due to node mobility, distributed channel access, and fading radio signal effects. This goal can be successfully accomplished only through the cooperation of the different protocol layers involved. In this paper the authors propose a novel QoS...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Apr 2010

    Reducing the Impact of Mobility-Induced Route Failures on QoS in MANETs

    In this paper, the authors introduce QMR/PR, a flexible QoS-sensitive routing framework for mobile ad hoc networks, which addresses the problems caused by mobility-induced route failures. QMR/PR combines packet-interleaving using multipath routing and packet-level forward error correction. A particularly promising feature is its ability to significantly reduce both random and...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jun 2009

    QoS Aware Stable Path Routing (QASR) Protocol for MANETs

    Dynamic topology and limited bandwidth of Mobile Ad hoc NETworks (MANETs) make end-to-end QoS support an inherently complex and difficult task. Most of the current QoS routing protocols propose routing based on two QoS metrics. This paper introduces a QoS aware on demand routing protocol that uses signal stability as...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2010

    Minimum-Energy Multicast in Mobile Ad Hoc Networks Using Network Coding

    The minimum energy required to transmit a bit of information through a network characterizes the most economical way to communicate in a network. In this paper, the authors show that under a layered model of wireless networks, the minimum energy-per-bit for multicasting in a mobile ad hoc network can be...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2009

    Almost Delaunay Triangulation Routing in Wireless Sensor Networks

    To obtain a satisfactory performance in the wireless sensor network, optimal routing is the most important aspect. The lifetime of the sensor network depends mostly on the routing topology. In order to route the data in an efficient way, the authors propose an almost Delaunay triangulation routing approach, which could...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Sep 2009

    Channel-Based Detection of Sybil Attacks in Wireless Networks

    Due to the broadcast nature of the wireless medium, wireless networks are especially vulnerable to Sybil attacks, where a malicious node illegitimately claims a large number of identities and thus depletes system resources. This paper proposes an enhanced physical-layer authentication scheme to detect Sybil attacks, exploiting the spatial variability of...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2010

    PSKA: Usable and Secure Key Agreement Scheme for Body Area Networks

    A Body Area Network (BAN) is a wireless network of health monitoring sensors designed to deliver personalized healthcare. Securing intersensor communications within BANs is essential for preserving not only the privacy of health data, but also for ensuring safety of healthcare delivery. This paper presents Physiological-Signal-based Key Agreement (PSKA), a...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Aug 2010

    Secure Semantic Sensor Web and Pervasive Computing

    Sensors are everywhere and they have become part of the daily lives. These sensors are continually monitoring the environment, events, activities, people, vehicles, and many other objects, gathering data from these objects, aggregating the data and then making sense out of the data and finally taking actions based on the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2010

    Channel Assignment Strategies for Multiradio Wireless Mesh Networks: Issues and Solutions

    Next-generation wireless mobile communications will be driven by converged networks that integrate disparate technologies and services. The wireless mesh network is envisaged to be one of the key components in the converged networks of the future, providing flexible high-bandwidth wireless backhaul over large geographical areas. While single radio mesh nodes...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2009

    IPTV Home Networking Via 802.11 Wireless Mesh Networks: An Implementation Experience

    Wireless multimedia home servers are the next generation of home entertainment systems. From a single broadband connection entering home, multimedia data is transmitted to TV and other peripherals using only wireless links. The provision of hiqh quality time-critical multimedia services in indoor environment is very challenging due to high attenuation...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2009

    On Developing a Mesh Network of Robots for Hands-On Undergraduate Education

    The goal of this paper is to introduce the latest technology based laboratory experiments to engage students effectively and to help them understand the fundamental concepts in the electronics and telecommunications fields. In order to achieve this goal a multi-featured or a multi-disciplinary platform is used to develop the experiments....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Oct 2009

    Topology Control for Service-Oriented Wireless Mesh Networks

    Topology control is one of the most critical design issues in multihop wireless networks. Topology control has been investigated extensively in the literature. Nevertheless, it is noted that most existing studies do not consider the requirements on upper layer applications or services. In this paper the authors address the topology...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Mar 2010

    Multi-Channel Assignmentment for Heterogeneous Wireless Mesh Networks

    Multi-channel assignment schemes have recently been proposed to improve the network throughput of multihop Wireless Mesh Networks (WMNs). In these schemes, channel coordination is done either through time synchronization across all the nodes, or through the use of a dedicated channel for the transmission of necessary control messages. Either way,...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2010

    Channel-Assignment and Scheduling in Wireless Mesh Networks Considering Switching Overhead

    This paper considers the channel-assignment and scheduling in wireless mesh networks that employ multiple radios and multiple channels. In contrast to the various algorithms available in the literature, the authors explicitly model the delay overhead that is incurred during channel switching, and use that delay in the design of algorithms....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jun 2009

    Routing in Outer Space: Fair Traffic Load in Multihop Wireless Networks

    This paper consider security-related and energy efficiency issues in multihop wireless networks. The authors start the work from the observation; known in the literature, that shortest path routing creates congested areas in multihop wireless networks. These areas are critical - they generate both security and energy efficiency issues. This paper...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Feb 2010

    Demonstration of Omnipresent Ethernet: A Novel Metro End-to-End Communication System Using Binary + Source Routing and Carrier Ethernet

    A new end-to-end communication solution called Omnipresent Ethernet (OEthernet) is demonstrated through a test-bed. The solution takes into consideration contemporary interconnection methodologies in enterprise/provider networks from a generalized graph perspective. The aim is to be able to convert any network graph into a known symmetric graph by simple algorithmic treatment....

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2010

    Redundancy and Diversity Measure Inspired Biometrics Fusion

    In many identification problems, finding a duplicate using biometrics is very challenging task because of the size of the database and the errors related to the core biometrics engine. Fusion of different modes of biometric system can lead to improved recognition accuracy. In a multi classifier fusion scenario, the confidence...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jul 2009

    Slice-Based Architecture for Biometrics: Prototype Illustration on Privacy Preserving Voice Verification

    This paper investigates slice-based architecture for biometrics. A service slice is an aggregation of resources for a specific biometric objective; e.g., speaker verification. Slice-based architecture is attractive as a framework for modeling service-oriented biometric applications. In order for it to be usable, slice-based architecture must adequately address privacy, security, and...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Aug 2010

    Keystroke Biometrics With Number-Pad Input

    Keystroke dynamics is the process of identifying individual users on the basis of their typing rhythms, which are in turn derived from the timestamps of key-press and key-release events in the keyboard. Many researchers have explored this domain, with mixed results, but few have examined the relatively impoverished territory of...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2010

    Obtaining Cryptographic Keys Using Feature Level Fusion of Iris and Face Biometrics for Secure User Authentication

    Biometric traits are permanently associated with a user. Though this is an advantage from identity verification point of view, if such biometric data is compromised, it cannot be replaced by a new one and becomes unusable in the system. This limitation can be overcome by combining biometrics with cryptographic techniques...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Sep 2009

    Real-Time Wireless Sensor Network for Landslide Detection

    Wireless sensor networks are one of the emerging areas which have equipped scientists with the capability of developing real-time monitoring systems. This paper discusses the development of a Wireless Sensor Network(WSN) to detect landslides, which includes the design, development and implementation of a WSN for real time monitoring, the development...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Jan 2010

    Relay Node Placement in Wireless Sensor Networks

    A wireless sensor network consists of many low-cost, low-power sensor nodes, which can perform sensing, simple computation, and transmission of sensed information. Long distance transmission by sensor nodes is not energy efficient, since energy consumption is a superlinear function of the transmission distance. One approach to prolong network lifetime while...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Sep 2009

    Temperature Control Framework Using Wireless Sensor Networks and Geostatistical Analysis for Total Spatial Awareness

    This paper presents a novel framework for intelligent temperature control in smart homes using Wireless Sensor Networks (WSN) and geostatistical analysis for total spatial awareness. Sampled temperature readings from sensor nodes have the ability to inform the system on temperatures at specific locations. However, these locations where readings are taken...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Nov 2009

    Changing Java's Semantics for Handling Null Pointer Exceptions

    This paper envisions a world where no exceptions are raised; instead, language semantics are changed so that operations are total functions. Either an operation executes normally or tailored recovery code is applied where exceptions would have been raised. As an initial step and evaluation of this idea, this paper proposes...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Mar 2010

    A ZigBee Wireless Sensor Network Compliant With the IEEE1451 Standard

    Wireless sensor networks are becoming very attractive for monitoring and control applications with smart sensor nodes. The authors present an implementation of a ZigBee wireless sensor network compliant with the IEEE1451 standard to improve the interoperability. This paper describes the message structure, commands and transactions. Furthermore, a proposal is presented...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Mar 2009

    Reprogramming Wireless Sensor Networks: Challenges and Approaches

    Wireless sensor networks need an efficient and reliable reprogramming service to facilitate management and maintenance tasks. In this paper the authors first outline a framework to examine different functions in reprogramming, followed by an analysis of reprogramming challenges. The authors then provide a comprehensive survey of the state-of-the-art reprogramming systems,...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Sep 2009

    Overview and Evaluation of Constraint Validation Approaches in Java

    Integrity is a dependability attribute partially ensured through runtime validation of integrity constraints. A wide range of different constrain: validation approaches exists - ranging from simple if conditions over explicit constraint validation methods and contract specifications to constraints as first class run time entities of an application. However, increased support...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // May 2009

    Highly Reliable Energy-Saving MAC for Wireless Body Sensor Networks in Healthcare Systems

    Wireless Body Sensor Networks (BSNs) in healthcare systems operate under conflicting requirements. These are the maintenance of the desired reliability and message latency of data transmissions, while simultaneously maximizing battery lifetime of individual body sensors. In doing so, the characteristics of the entire system, including physical, Medium Access Control (MAC),...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Mar 2010

    Reducing Lifecycle Energy Use of Network Switches

    The networking infrastructure is becoming a growing portion of the energy footprint in data centers as well as information technology in general. This paper evaluates energy management strategies for network switches. The authors begin by performing a lifecycle assessment of existing switches in a data center, and find that the...

    Provided By Institute of Electrical and Electronics Engineers

  • White Papers // Apr 2009

    BPSK Subcarrier Intensity Modulated Free-Space Optical Communications in Atmospheric Turbulence

    Free-Space Optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature fluctuations. This results in decreased Signal-to-Noise Ratio (SNR) and consequently impaired performance. In this paper, the error performance of the FSO using a Subcarrier Intensity Modulation (SIM) based on a...

    Provided By Institute of Electrical and Electronics Engineers