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Hindawi Publishing
(1834 results)-
Whitepapers
Adaptive Sensor Activation Algorithm for Target Tracking in Wireless Sensor Networks
March 22, 2012, 12:00am PDT
Target tracking is an important application of wireless sensor networks where energy conservation plays an important role. In this paper, the authors propose an energy-efficient sensor activation...
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Whitepapers
Cooperative Data Processing Algorithm Based on Mobile Agent in Wireless Sensor Networks
March 25, 2012, 12:00am PDT
Mobile Agent (MA) systems provide new capabilities for energy-efficient data processing by flexibly planning its itinerary for facilitating agent-based data collection and aggregation. In this...
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Whitepapers
A Security-Performance-Balanced User Authentication Scheme for Wireless Sensor Networks
February 12, 2012, 12:00am PST
The uses of wireless sensor networks have increased to be applicable in many different areas, such as military applications, ecology, and health applications. These applications often include the...
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Whitepapers
A Cross-Layer-Based Clustered Multipath Routing with QoS-Aware Scheduling for Wireless Multimedia Sensor Networks
March 28, 2012, 12:00am PDT
Wireless Multimedia Sensor Networks (WMSNs) can handle different traffic classes of multimedia content (video, audio streams, and still images) as well as scalar data over the network. In this...
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Whitepapers
Improving DNS Security Using Active Firewalling with Network Probes
March 23, 2012, 12:00am PDT
The security problems that outbreak network services today are increasing at a dramatic pace especially with the unceasing improvement of network transmission rates and the sheer amount of data...
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Whitepapers
An Energy Supply System for Wireless Sensor Network Nodes
March 25, 2012, 12:00am PDT
The power source is a critical obstacle for wireless sensor network nodes. In order to prolong the lifetime of wireless sensor networks, this paper presents an energy supply system that uses a...
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Whitepapers
A Hole-Tolerant Redundancy Scheme for Wireless Sensor Networks
March 23, 2012, 12:00am PDT
Maximizing network lifetime while not sacrificing coverage and connectivity in Wireless Sensor Networks (WSNs) has attracted many researches during the past few years. In this paper, the authors...
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Whitepapers
An Energy-Efficient CKN Algorithm for Duty-Cycled Wireless Sensor Networks
March 15, 2012, 12:00am PDT
To prolong the lifetime of a wireless sensor network, one common approach is to dynamically schedule sensors' active/sleep cycles (i.e., duty cycles) using sleep scheduling algorithms. In this...
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Whitepapers
Improved Virtual Potential Field Algorithm Based on Probability Model in Three-Dimensional Directional Sensor Networks
March 13, 2012, 12:00am PDT
In conventional directional sensor networks, coverage control for each sensor is based on a 2D directional sensing model. However, 2D directional sensing model failed to accurately characterize...
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Whitepapers
K-Coverage Persevering Routing Technique Based on Event Occurrence Patterns for Wireless Sensor Networks
March 12, 2012, 12:00am PDT
In this paper, the authors propose a new routing algorithm schema based on event occurrence history to secure K-Coverage of event paths and maintain the maximum degree of coverage. In the proposed...
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Whitepapers
CAC-MAC: A Cross-Layer Adaptive Cooperative MAC for Wireless Ad Hoc Networks
March 1, 2012, 12:00am PST
Cooperative communication has been recently proposed as a way to mitigate fading in wireless networks. A Cross-layer Adaptive Cooperative MAC (CAC-MAC) protocol for IEEE 802.11 DCF-based wireless...
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Whitepapers
Low-Cost Monitoring and Intruders Detection Using Wireless Video Sensor Networks
February 28, 2012, 12:00am PST
In this paper, the authors' aim is to prolong the whole network lifetime while fulfilling the surveillance application needs. They present a novel scheduling algorithm where only a subset of video...
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Whitepapers
Time-Independent Data Collection Protocol in Mobility-Assistant Wireless Sensor Networks with Duty Cycles
February 26, 2012, 12:00am PST
Mobility-assistant sensor networks comprise mobile elements, and static sensors are established for the purpose of solving the serious problems such as overlapping or energy holes in Wireless...
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Whitepapers
Design and Implementation of Enhanced Surveillance Platform with Low-Power Wireless Audio Sensor Network
February 27, 2012, 12:00am PST
Video surveillance system, which can provide real-time display of the monitored scene and video playback, has been employed in many areas including commercial security, accident investigation, law...
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Whitepapers
A Mobile Agent Routing Algorithm in Dual-Channel Wireless Sensor Network
February 27, 2012, 12:00am PST
A Mobile Agent Routing Algorithm (MARA) is presented in this paper, and then based on the dual-channel communication model, the two-layer network combination optimization strategy is also...
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Whitepapers
A Network Coding Based Rarest-First Packet Recovery Algorithm for Transmitting Geocast Packets Over Hybrid Sensor-Vehicular Networks
January 11, 2012, 12:00am PST
Vehicular Ad hoc NETwork (VANET) and road-side sensors are used to improve driving safety in many applications. Sensor nodes deployed along the roadside are used to sense road conditions and then...
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Whitepapers
An Extended Virtual Force-Based Approach to Distributed Self-Deployment in Mobile Sensor Networks
February 21, 2012, 12:00am PST
Wireless sensor networks can be deployed manually or spread randomly over the interested regions for practical applications. However, in many working environments, such as remote harsh fields,...
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Whitepapers
A Local World Evolving Model for Energy-Constrained Wireless Sensor Networks
February 23, 2012, 12:00am PST
In this paper, the authors aim at improving the interactions among sensor nodes, and they present a heterogeneous local-world model to form large-scale wireless sensor networks based on complex...
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Whitepapers
Rendezvous Data Collection Using a Mobile Element in Heterogeneous Sensor Networks
February 20, 2012, 12:00am PST
Since the emergence, Wireless Sensor Networks (WSNs) undertake intensive data collection during the sensing period. However, the limited energy storage of tiny sensors involved in a WSN harshly...
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Whitepapers
Dynamic Key-Updating: Privacy-Preserving Authentication for RFID Systems
February 14, 2012, 12:00am PST
The objective of private authentication for Radio Frequency IDentification (RFID) systems is to allow valid readers to explicitly authenticate their dominated tags without leaking the private...
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Whitepapers
Improving Accuracy for 3D RFID Localization
February 4, 2012, 12:00am PST
Radio Frequency IDentification (RFID) becomes a prevalent labeling and localizing technique in the recent years. Deploying indoor RFID localization systems facilitates many applications. Previous...
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Whitepapers
Pervasive Smart Spaces and Environments: A Service-Oriented Middleware Architecture for Wireless Ad Hoc and Sensor Networks
February 27, 2012, 12:00am PST
In the twenty-first century, the impact of wireless and ubiquitous technologies is changing the way people perceive and interact with the physical world. These communication paradigms promise to...
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Whitepapers
Anchor-Node-Based Distributed Localization with Error Correction in Wireless Sensor Networks
January 18, 2012, 12:00am PST
Many applications of wireless sensor networks such as object tracking, environment and habitat monitoring, intrusion detection, and geographic routing rely on the location information of sensor...
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Whitepapers
On Optimal Antijamming Strategies in Sensor Networks
February 6, 2012, 12:00am PST
Physical layer radio jamming is a serious security threat to a wireless sensor network since the network relies on open wireless radio channels. A radio jammer is typically strategic and chooses...
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Whitepapers
Traffic Rerouting Strategy Against Jamming Attacks in WSNs for Microgrid
February 25, 2012, 12:00am PST
In a micro-grid as an energy infrastructure, the vulnerability against jamming attacks is fatal. Thus, the ability to deal with jamming attacks and maintain an acceptable level of service...
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Whitepapers
Enhancing Sink-Location Privacy in Wireless Sensor Networks Through K -Anonymity
January 7, 2012, 12:00am PST
Due to the shared nature of wireless communication media, a powerful adversary can eavesdrop on the entire radio communication in the network and obtain the contextual communication statistics,...
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Whitepapers
A Distributed Reclustering Hierarchy Routing Protocol Using Social Welfare in Wireless Sensor Networks
January 26, 2012, 12:00am PST
Wireless Sensor Networks (WSNs) are capable of sensing physical or environmental conditions, such as motion, pressure, and images of the environment, as well as seismic, electromagnetic, and...
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Whitepapers
InContexto: Multisensor Architecture to Obtain People Context from Smartphones
January 3, 2012, 12:00am PST
The way users interact with Smartphones is changing after the improvements made in their embedded sensors. Increasingly, these devices are being employed as tools to observe individuals habits....
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Whitepapers
Energy-Efficient Secure Path Algorithm for Wireless Sensor Networks
January 16, 2012, 12:00am PST
To collect the data and transmit them on the base station is the main task of the sensor nodes in Wireless Sensor Networks (WSNs). This transmission requires a specific routing algorithm. To...
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Whitepapers
Energy Efficient MAC Protocol for Low-Energy Critical Infrastructure Monitoring Networks Using Wakeup Radio
February 2, 2012, 12:00am PST
Critical infrastructure monitoring applications are rapidly increasing. Application requirements include reliable data transfer, energy efficiency, and long deployment lifetime. In this paper, the...
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Whitepapers
Logic Macroprogramming for Wireless Sensor Networks
December 17, 2011, 12:00am PST
It is notoriously difficult and tedious to program Wireless Sensor Networks (WSNs). To simplify WSN programming, the authors propose Sense2P, a logic macro-programming system for abstracting,...
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Whitepapers
Multichannel Communications in Wireless Automation: Interdependencies Between Communication and Control Parameters
December 25, 2011, 12:00am PST
Exploitation of wireless communications in various automation applications brings indisputable benefits, which has proliferated research efforts in the field during the recent years. In this...
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Whitepapers
A Study on Cluster Partitioning with Cooperative MISO Scheme in Wireless Sensor Networks
December 28, 2011, 12:00am PST
This paper addresses the cluster partitioning problem in wireless sensor networks deployed in a continuous area. The authors present the model of the network and describe its operational details...
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Whitepapers
Energy-Efficient Fire Monitoring Over Cluster-Based Wireless Sensor Networks
January 11, 2012, 12:00am PST
Uncontrolled fires occurring in wild areas cause significant damage to natural and human resources. Many countries are looking for ways to fight forest fires at an early stage using sensor...
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Whitepapers
Efficient Complex Event Processing Over RFID Streams
January 6, 2012, 12:00am PST
RFID events are a large volume of stream data that continuously come out for tracking and monitoring objects. Many studies have been done to detect a complex event in the RFID stream. However, the...
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Whitepapers
Spatial and Temporal Correlations-Based Routing Algorithm in Intermittent Connectivity Human Social Network
January 14, 2012, 12:00am PST
The social network formed by people is one of the key applications of Delay-Tolerant Network (DTN). Owing to its intermittent connectivity and unique human mobility patterns, how to transmit data...
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Whitepapers
Performance Analysis of Flow-Based Traffic Splitting Strategy on Cluster-Mesh Sensor Networks
December 3, 2011, 12:00am PST
Performance analysis is crucial for designing predictable and cost-efficient sensor networks. Based on the network calculus theory, the authors propose a flow-based traffic splitting strategy and...
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Whitepapers
An Adaptive System Supporting Collaborative Learning Based on a Location-Based Social Network and Semantic User Modeling
January 2, 2012, 12:00am PST
In this paper, the authors present an adaptive e-learning system which supports collaborative learning based on a location-based social network and semantic modeling. In the system, a social...
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Whitepapers
Impact of Mobility on Routing Energy Consumption in Mobile Sensor Networks
November 10, 2011, 12:00am PST
Mobility in mobile sensor networks causes frequent route breaks, and each routing scheme reacts differently during route breaks. It results in a performance degradation of the energy consumption...
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Whitepapers
Subjective Quality Assessment of H.264/AVC Video Streaming With Packet Losses
January 18, 2011, 12:00am PST
Research in the field of video quality assessment relies on the availability of subjective scores, collected by means of experiments in which groups of people are asked to rate the quality of...
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Whitepapers
A Vascular-Network-Based Nonuniform Hierarchical Fault-Tolerant Routing Algorithm for Wireless Sensor Networks
September 6, 2012, 12:00am PDT
Fault tolerance is the key technology in wireless sensor networks which attracts many research interests. Aiming at the issue that the nodes' failures affect the network's stability and service...
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Whitepapers
A Routing Scheme for IPv6-Based All-IP Wireless Sensor Networks
October 24, 2012, 12:00am PDT
The paper proposes a routing scheme for IPv6-based all-IP wireless sensor networks. The paper creates the IPv6 address structure and the IPv6 address configuration algorithm for all-IP wireless...
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Whitepapers
Optimal Convergecast Scheduling Limits for Clustered Industrial Wireless Sensor Networks
October 14, 2012, 12:00am PDT
In this paper, orienting to clustered industrial wireless sensor networks, the authors analyze the performance bounds of the converge-cast scheduling, which is a typical many-to-one communication...
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Whitepapers
Remote Industrial Sensor Network Monitoring Using M2M Based Ethical Sniffers
November 1, 2012, 12:00am PDT
Diagnosing the deployed network efficiency and anomaly detection, which is an important research issue in traditional networking systems, has not been carefully addressed in industrial wireless...
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Whitepapers
The Complex Alarming Event Detecting and Disposal Processing Approach for Coal Mine Safety Using Wireless Sensor Network
October 11, 2012, 12:00am PDT
In this paper, the authors proposed a real-time complex alarming event detecting and disposal processing approach for coal mine safety using wireless sensor network. Firstly, they introduce the...
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Whitepapers
Design of a Wireless Multi-Radio-Frequency Channels Inspection System for Bridges
October 24, 2012, 12:00am PDT
This paper presents a Wireless Multi-radio-frequency Channels Inspection System (WMCIS) based on Wireless Sensor Networks (WSN) for the sake of bridge structural vibration inspection. The designed...
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Whitepapers
Broadcasting with Least Redundancy in Wireless Sensor Networks
October 24, 2012, 12:00am PDT
In this paper, the authors propose a Broadcast Algorithm with Least Redundancy (BALR) for WSN. By identifying the optimized number of induced forwarders as 2, BALR establishes a weighted sum...
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Whitepapers
Efficient Sensor Localization Method with Classifying Environmental Sensor Data
October 30, 2012, 12:00am PDT
Sensor location estimation is important for many location-based systems in ubiquitous environments. Sensor location is usually determined using a global positioning system. For indoor...
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Whitepapers
Interconnection Between IP Networks and Wireless Sensor Networks
October 17, 2012, 12:00am PDT
A Wireless Sensor Network (WSN) mainly consists of many independent, low-power, low-cost devices capable of sensing, processing, and wireless communication. Their main purpose is to collect and...
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Whitepapers
Improving Driving Safety Based on Safe Distance Design in Vehicular Sensor Networks
October 14, 2012, 12:00am PDT
The authors proposed a Critical Safe Distance (CSD) model in V2V (Vehicle-To-Vehicle) communication systems. By elaborately analyzing the vehicular movement features for car following, they...
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Whitepapers
A Survey of Wireless Sensor Network Abstraction for Application Development
November 5, 2012, 12:00am PST
In this paper, three levels of abstractions are classified from the existing literature: node, network, and infrastructure abstractions. Since the node and network abstractions are already a...
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Whitepapers
A Group Key Distribution Scheme for Wireless Sensor Networks in the Internet of Things Scenario
October 5, 2012, 12:00am PDT
In this paper, the authors propose a group key distribution scheme for WSNs in the Internet of Things (IoT) scenario in which they organize sensor nodes into groups in a hierarchical structure. In...
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Whitepapers
Probability Model Based Coverage-Enhancing Algorithm for WSNs of Nodes' Adjustable Movement Pattern
October 23, 2012, 12:00am PDT
At present, coverage, which is regarded as monitor of service quality, has been an essential problem of the Wireless Sensor Networks (WSNs). One of these research directions is to use less...
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Whitepapers
Integrated Extensible Simulation Platform for Vehicular Sensor Networks in Smart Cities
November 22, 2012, 12:00am PST
This paper presents an integrated extensible simulation platform BHU-VSim for Vehicular Sensor Networks (VSNs), which aims to support general simulation environment for typical vehicular...
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Whitepapers
Challenges for Coexistence of Machine to Machine and Human to Human Applications in Mobile Network: Concept of Smart Mobility Management
August 13, 2012, 12:00am PDT
A key factor for the evolution of the mobile networks towards 4G is to bring to fruition high bandwidth per mobile node. Eventually, due to the advent of a new class of applications, namely,...
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Whitepapers
Ant-Based Transmission Range Assignment Scheme for Energy Hole Problem in Wireless Sensor Networks
October 9, 2012, 12:00am PDT
The authors investigate the problem of uneven energy consumption in large-scale many-to-one sensor networks (modeled as concentric coronas) with constant data reporting, which is known as an...
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Whitepapers
Intelligent Monitoring of Multistory Buildings Under Unknown Earthquake Excitation by a Wireless Sensor Network
October 8, 2012, 12:00am PDT
It is necessary to investigate techniques for monitoring structures under unknown earthquakes. For this purpose, an algorithm is proposed in this paper for the identification of structures and...
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Whitepapers
A Minimax Unbiased Estimation Fusion in Distributed Multisensor Localization and Tracking
October 26, 2012, 12:00am PDT
A minimax estimation fusion in distributed multi-sensor systems is proposed, which aims to minimize the worst-case squared estimation error when the cross-covariances between local sensors are...
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Whitepapers
Public-Transportation-Assisted Data Delivery Scheme in Vehicular Delay Tolerant Networks
November 12, 2012, 12:00am PST
As an important component of transportation system, public transportation accounts for a considerable proportion in the whole traffic flow. In this paper, the authors firstly present a...
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Whitepapers
Optimal Adaptive Antijamming in Wireless Sensor Networks
November 8, 2012, 12:00am PST
Wireless sensor networks have been widely applied to various application domains such as environmental monitoring and surveillance. This paper proposes an adaptive approach to antijamming for...
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Whitepapers
Energy- and Cognitive-Radio-Aware Routing in Cognitive Radio Sensor Networks
November 7, 2012, 12:00am PST
Cognitive Radio Sensor Networks (CRSNs) are the next generation Wireless Sensor Networks (WSNs) that mitigate overcrowded unlicensed spectrum bands by opportunistically using temporally unoccupied...
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Whitepapers
Interference-Aware Fault-Tolerant Energy Spanner in Wireless Ad Hoc Networks
November 21, 2012, 12:00am PST
Ad hoc networks are formed by autonomous nodes communicating via radio without any additional backbone infrastructure. Ad hoc networks have received significant attention in recent years due to...
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Whitepapers
Improved LEACH Routing Communication Protocol for a Wireless Sensor Network
November 19, 2012, 12:00am PST
A WSN (Wireless Sensor Network) consists of thousands of sensor nodes with limited energy, memory, and computation capability. The classical hierarchical protocols such as LEACH and LEACH-C have...
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Whitepapers
An Effective Find and Replicate Strategy for Data Communication in Intermittently Connected Wireless Ad Hoc and Sensor Networks
October 24, 2012, 12:00am PDT
ICWASNs are a kind of wireless networks where, due to mobility of nodes and lack of connectivity, there may be frequent disconnections among the nodes. Hence, the routing path from the source to...
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Whitepapers
Distributed Intrusion Detection of Byzantine Attacks in Wireless Networks with Random Linear Network Coding
November 27, 2012, 12:00am PST
Network Coding (NC) can be applied to achieve the maximal information flow in a network. In energy-constraint wireless networks such as wireless sensor networks, applying NC can further reduce the...
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Whitepapers
Energy-Model-Based Optimal Communication Systems Design for Wireless Sensor Networks
October 3, 2012, 12:00am PDT
With the rapid development of wireless communication and low-power-embedded techniques, Wireless Sensor Networks (WSNs) are widely used in many industrial and civilian application areas, including...
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Whitepapers
A Survey of Localization in Wireless Sensor Network
November 16, 2012, 12:00am PST
Localization is one of the key techniques in wireless sensor network. The location estimation methods can be classified into target/source localization and node self-localization. In target...
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Whitepapers
An Adaptive Opportunistic Network Coding Mechanism in Wireless Multimedia Sensor Networks
November 21, 2012, 12:00am PST
The network coding technique is promising for improving the performance of video communication in wireless multimedia sensor networks. The authors propose an Adaptive Opportunistic Network Coding...
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Whitepapers
Latency Estimation-Based Data Delivery Scheme for Vehicular Ad Hoc Networks
December 5, 2012, 12:00am PST
Data delivery is the most compelling issue for the applications in vehicular ad hoc networks. The characteristics of VAENTs such as highly dynamic topology and the road-constrained mobility pose...
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Whitepapers
An Energy-Efficient Distributed Algorithm for Virtual Backbone Construction with Cellular Structure in WSN
December 4, 2012, 12:00am PST
The construction of virtual backbone within Wireless Sensor Network (WSN) is an important means to reduce the redundant transmission and conserve limited energy resources. However, if there is not...
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Whitepapers
Efficient Data Dissemination in Urban VANETs: Parked Vehicles are Natural Infrastructures
December 3, 2012, 12:00am PST
Data dissemination is the fundamental operation in Vehicular Ad hoc NETworks (VANETs); for example, after an accident or congestion is detected by the corresponding sensors mounted on the...
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Whitepapers
MDS-Based Wormhole Detection Using Local Topology in Wireless Sensor Networks
January 27, 2012, 12:00am PST
Wormhole attack is a severe threat to Wireless Sensor Networks (WSNs), which has received considerable attentions in the literature. In this paper, the authors attempt to relax the limitations in...
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Whitepapers
An (m, K)-Firm Real-Time Aware Fault-Tolerant Mechanism in Wireless Sensor Networks
September 24, 2012, 12:00am PDT
In this paper, the authors propose an (m, k)-firm-based real-time fault-tolerant mechanism, which helps routing mechanisms to achieve specific QoS requirement by employing a Local Status Indicator...
Provided by Hindawi Publishing
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Whitepapers
Characterization of Hardware Impairments in Multiple Antenna Systems for DoA Estimation
September 12, 2011, 12:00am PDT
The authors consider the effects introduced by hardware impairments on the estimation of the Direction of Arrival (DoA) deploying a multiple antenna radio system. They derive a system model from...
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Whitepapers
Self-Calibrated Energy-Efficient and Reliable Channels for On-Chip Interconnection Networks
August 17, 2011, 12:00am PDT
Energy-efficient and reliable channels are provided for On-Chip Interconnection Networks (OCINs) using a self-calibrated voltage scaling technique with Self-Corrected Green (SCG) coding scheme....
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Whitepapers
Networks on Chips: Structure and Design Methodologies
October 1, 2011, 12:00am PDT
The next generation of MultiProcessor System on Chip (MPSoC) and Chip MultiProcessors (CMPs) will contain hundreds or thousands of cores. Such a many-core system requires high-performance...
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Whitepapers
A Hardware Design of Neuromolecular Network with Enhanced Evolvability: A Bioinspired Approach
August 30, 2011, 12:00am PDT
Silicon-based computer systems have powerful computational capability. However, they are easy to malfunction because of a slight program error. Organisms have better adaptability than computer...
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Whitepapers
Reliability Evaluation of Distribution Power Systems Based on Artificial Neural Network Techniques
August 25, 2011, 12:00am PDT
In order to assess the reliability of distribution systems, more and more researchers are directing their attention to the artificial intelligent method, and several reliability indices have been...
Provided by Hindawi Publishing
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Whitepapers
Probabilistic Behavior Analysis of MIMO Fading Channels Under Geometric Mean Decomposition
September 22, 2011, 12:00am PDT
Geometric Mean Decomposition (GMD) has been proposed as a method to realize multiple spatial links with identical gains that are intrinsic to a MIMO channel. In order to simplify system design and...
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Whitepapers
Developing a Fuzzy Logic Based on Demand Multicast Routing Protocol
October 10, 2011, 12:00am PDT
A Mobile Ad hoc NETwork (MANET) is formed by wireless mobile nodes which dynamically set up themselves to initiate and maintain a wireless network without any predefined infrastructure. For...
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