Scientific Research Publishing

Displaying 1-40 of 176 results

  • White Papers // Mar 2012

    Improved Radio Network Dimensioning for Real-Time Polling Service on IEEE 802.16 Wireless Networks With QoS Consideration

    Recently, applications of real-time Polling Service (rtPS) in IEEE 802.16 wireless networks have gained considerable popularity. These applications generate large amounts of real time traffic in the network and thus maintaining the Quality of Service (QoS) such as packet delay requirement in rtPS dominant networks is critical. Existing dimensioning methodology...

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  • White Papers // Mar 2012

    An Integrative Comparison of Energy Efficient Routing Protocols in Wireless Sensor Network

    Many advances have been made in sensor technologies which are as varied as the applications; and many more are in progress. It has been reasonable to design and develop small size sensor nodes of low cost and low power. In this paper, the authors have explored some energy-efficient routing protocols...

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  • White Papers // Feb 2012

    Energy Efficient Non-Cooperative Methods for Resource Allocation in Cognitive Radio Networks

    In a cognitive radio network wherein primary and secondary users coexist, an efficient power allocation method represents one of the most important key aspects. This paper provides a novel approach based on a game theory framework to solve this problem in a distributed and fair way. Formulated as an optimization...

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  • White Papers // Feb 2012

    Utilizing Colored Pheromones and Helping Ants for Wireless Mesh Networks Routing

    Improving routing algorithm performance not only leads to appreciate the quality of data transmission, but also increases the speed of data transfer. In this paper, the authors propose a hybrid method which is a combination of traffic classification by the help of colored pheromones and helping ants method in the...

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  • White Papers // Feb 2012

    An Improved Name Disambiguation Method Based on Atom Cluster

    An improved name disambiguation method based on atom cluster. Aiming at the method of character-related properties of similarity based on information extraction depends on the character information, a new name disambiguation method is proposed, and improved k-means algorism for name disambiguation is proposed in this paper. The cluster analysis cluster...

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  • White Papers // Feb 2012

    NAMD Package Benchmarking on the Base of Armenian Grid Infrastructure

    The parallel scaling (parallel performance up to 48 cores) of NAMD package has been investigated by estimation of the sensitivity of interconnection on speedup and benchmark results - testing the parallel performance of Myrinet, Infini-band and Gigabit Ethernet networks. The system of ApoA1 of 92 K atoms, as well as...

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  • White Papers // Feb 2012

    An improved Artificial Immune System based Network Intrusion Detection by Using Rough Set

    With the increasing worldwide network attacks, Intrusion Detection (ID) has become a popular research topic in last decade. Several artificial intelligence techniques such as neural networks and fuzzy logic have been applied in ID. The results are varied. The intrusion detection accuracy is the main focus for Intrusion Detection Systems...

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  • White Papers // Feb 2012

    General Purpose Wireless Communication System Using Data Acquisition

    A sensor-enabled and RFID-integrated, Wireless Data Acquisition System (WDAS) that has similar functionality as Multiple Input Multiple Output (MIMO) systems for health-care applications has been developed, simulated and implemented. The system can accept various measurements via sensors placed on patients or elders and transmit information wirelessly to base station at...

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  • White Papers // Feb 2012

    Training Based Channel Estimation in MIMO-OFDM Systems

    OFDM combined with the MIMO technique has become a core and attractive technology in future wireless communication systems and can be used to both improve capacity and quality of mobile wireless systems. Accurate and efficient channel estimation plays a key role in MIMO-OFDM communication systems, which is typically realized by...

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  • White Papers // Feb 2012

    A New Energy Efficient Data Gathering Approach in Wireless Sensor Networks

    Data gathering in wireless sensor networks is one of the important operations in these networks. These operations require energy consumption. Due to the limited energy of nodes, the energy productivity should be considered as a key objective in design of sensor networks. Therefore, the clustering is a suitable method that...

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  • White Papers // Feb 2012

    Usage of Pythagorean Triple Sequence in OSPF

    Internet Service Providers (ISPs) have an obligation to observe the conditions set in the Service Level Agreements (SLA) with their customers. One of the conditions is to ensure that ISPs minimize the duration of the loss of connectivity. Losses of connectivity are common occurrences most especially in networks with larger...

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  • White Papers // Feb 2012

    A Simple Encryption Keys Creation Scheme in Wireless Ad Hoc Networks

    A Mobile Ad hoc NETwork (MANET) is a collection of mobile nodes that temporarily integrate with each other to form a network. Such a network does not require the existence of a typical network infrastructure. There is no central entity with the authority to administer the services and configurations of...

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  • White Papers // Feb 2012

    Layer-Wise Topology Design for Cost Effective IP-Optical Networks

    Traffic engineering and topology design considering multilayer configuration have become more important. While multilayer design studies usually discuss the traffic engineering issue or reliability, this paper focuses on network construction cost in studying multilayer topology design. The number of ports for the IP layer and the maximum number of Wavelength...

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  • White Papers // Nov 2011

    Sequential Tests for the Detection of Voice Activity and the Recognition of Cyber Exploits

    The authors consider the problem of automated Voice Activity Detection (VAD), in the presence of noise. To attain this objective, they introduce a Sequential Detection of Change Test (SDCT), designed at the independent mixture of Laplacian and Gaussian distributions. They analyze and numerically evaluate the proposed test for various noisy...

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  • White Papers // Nov 2011

    Application of Heuristic (1-Opt Local Search) and Metaheuristic (Ant Colony Optimization) Algorithms for Symbol Detection in MIMO Systems

    Heuristic and metaheuristic techniques are used for solving computationally hard optimization problems. Local search is a heuristic technique while Ant Colony Optimization (ACO), inspired by the ants' foraging behavior, is one of the most recent metaheuristic technique. These techniques are used for solving optimization problems. Multiple-Input Multiple-Output (MIMO) detection problem...

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  • White Papers // Nov 2011

    An Enhanced Secure Heuristic-Stochastic Routing Arithmetic in MPLS Network

    To improve routing security in MPLS network, base on the stochastic routing algorithm, the authors propose a proactive mechanism they call Enhanced Secure Heuristic-Stochastic Routing (ESHSR), which brings to bear Bayesian principle, explores the existence of multiple routes and forces packets to take alternate paths probabilistically. In this paper, the...

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  • White Papers // Nov 2011

    Turbo Codes A New PCCC Design

    Coding techniques have always been a major area of scientific interest. Due to this interest, many coding schemes were invented. Eventually, their implementation in various systems contributed in the evolvement of Wireless Communications. A breakthrough was definitely Turbo coding. Particularly, the concept of joining two or more convolutional encoders in...

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  • White Papers // Nov 2011

    Impact of Channel Dynamics, Combined Nonlinearities and ASE Noise on Transmission Performance of all Optical Star WDM Networks

    For all optical Wavelength Division Multiplexing (WDM) network based on G.653 fibers, the authors investigate the quality factor deterioration due to combined nonlinear effects and Amplified Spontaneous Emission (ASE) noise for system parameters based on ITU-T Recommendation G.692. The investigation: emphasizes on Stimulated Raman Scattering (SRS) and Four Wave Mixing...

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  • White Papers // Nov 2011

    Fast Handoff for 802.11 Wireless Network

    Whenever the mobile station moves from the range of one access point and comes to the range of another access point a handoff process is occurred. This process takes a long time when using the IEEE 802.11 standard handoff and this delay affect the real time and multimedia applications. This...

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  • White Papers // Sep 2011

    Wireless Power Generation Strategy Using EAP Actuated Energy Harvester for Marine Information Acquisition

    The energy of a radio wave is reduced through the dispersion, the refraction and the absorption because the medium transferring the vibration of a radio wave is the seawater. In the end the reduced energy of a radio wave causes the reduced transmitting length for communication, the long postponed communication...

    Provided By Scientific Research Publishing

  • White Papers // Sep 2011

    An Energy-Based Stochastic Model for Wireless Sensor Networks

    The authors propose an energy-based stochastic model of Wireless Sensor Networks (WSNs) where each sensor node is randomly and alternatively in an active and a sleep mode. They first investigate the sensor model and derive the formula of the steady-state probability when there are a number of data packets in...

    Provided By Scientific Research Publishing

  • White Papers // Sep 2011

    Wireless Sensor Network for Monitoring Maturity Stage of Fruit

    In this paper, the authors present a wireless sensor network for monitoring the maturity stage of fruit. A dual-polarization coupled patch sensor, which is robust to environmental changes, was designed to operate at 2.45 GHz. It was attached to a Durian fruit for a period of days to measure the...

    Provided By Scientific Research Publishing

  • White Papers // Sep 2011

    ANCAEE: A Novel Clustering Algorithm for Energy Efficiency in Wireless Sensor Networks

    One of the major constraints of wireless sensor networks is limited energy available to sensor nodes because of the small size of the batteries they use as source of power. Clustering is one of the routing techniques that have been using to minimize sensor nodes' energy consumption during operation. In...

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  • White Papers // Sep 2011

    Novel Semi-blind Channel Estimation Schemes for Rayleigh Flat Fading MIMO Channels

    In this paper, the authors propose two novel semi-blind channel estimation techniques based on QR decomposition for Rayleigh flat fading Multiple Input Multiple Output (MIMO) channel using various pilot symbols. In the first technique, the flat-fading MIMO channel matrix H can be decomposed as an upper triangular matrix R and...

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  • White Papers // Aug 2011

    Multiple Targets Tracking Using Kinematics in Wireless Sensor Networks

    Target tracking is considered as one of the cardinal applications of a wireless sensor network. Tracking multiple targets is more challenging than tracking a single target in a wireless sensor network due to targets' movement in different directions, targets' speed variations and frequent connectivity failures of low powered sensor nodes....

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  • White Papers // Aug 2011

    Performance Analysis of an Enhanced Load Balancing Scheme for Wireless Sensor Networks

    Research interest in sensor networks routing largely considers minimization of energy consumption as a major performance criterion to provide maximum sensors network lifetime. When considering energy conservation, routing protocols should also be designed to achieve fault tolerance in communications. Moreover, due to dynamic topology and random deployment, incorporating reliability into...

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  • White Papers // Aug 2011

    Modeling of Data Reduction in Wireless Sensor Networks

    In this paper, the authors present a stochastic model for data in a Wireless Sensor Network (WSN) using random field theory. The model captures the space-time behavior of the underlying phenomenon being observed by the network. They present results regarding the size and spatial distribution of the regions of the...

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  • White Papers // Aug 2011

    Characterization Process of MOSFET With Virtual Instrumentation for DP4T RF Switch - A Review

    With the increasing interest in radio frequency switch by using the CMOS circuit technology for the wireless communication systems is in demand. A traditional n-MOS Single-Pole Double-Throw (SPDT) switch has good performances but only for a single operating frequency. For multiple operating frequencies, to transmitting or receiving information through the...

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  • White Papers // Aug 2011

    An Improved MPH-Based Delay-Constrained Steiner Tree Algorithm

    In order to optimize cost and decrease complexity with a delay upper bound, the delay-constrained Steiner tree problem is addressed. Base on the new Delay-Constrained MPH (DCMPH) algorithm and through improving on the select path, an improved MPH-based delay-constrained Steiner tree algorithm is presented in this paper. With the new...

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  • White Papers // Aug 2011

    Enterprise Service Bus: A Performance Evaluation

    The flexibility offered by an Enterprise Service Bus (ESB) in enabling various applications to exchange data makes it a very important middleware layer that is responsible for transporting data in a Service-Oriented Architecture (SOA). The popularity of the ESB has given rise to a number of Commercial Off The Shelf...

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  • White Papers // Aug 2011

    MAC Sub-Layer Analysis With Channel Estimation in Broadband Power Line Communication

    Broadband Power Line Communication (BPLC) gained a lot of interest because of low cost and high performance communication network in access area. In this paper PHYsical (PHY) layer and Medium Access Control (MAC) sub-layer of BPLC are considered. Furthermore, effects of Bit Error Rate (BER) are analyzed in MAC sub-layer....

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  • White Papers // Aug 2011

    A Effective Method for Properties Access in MAC Layer of ZigBee

    The attribute access methods of MAC layer in wireless communication network is researched. Aiming at conquering the problem of the shared ZigBee wireless channel resulting multi-channel device conflicts when using the data channel at the same time, therefore, the protocol is improved and a method used to access the properties...

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  • White Papers // Aug 2011

    Survey on Spam Filtering Techniques

    In the recent years spam became as a big problem of Internet and electronic communication. There developed a lot of techniques to fight them. In this paper the overview of existing e-mail spam filtering methods is given. The classification, evaluation, and comparison of traditional and learning-based methods are provided. Some...

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  • White Papers // Aug 2011

    Usage of Erlang Formula in IP Networks

    This paper is concerning of Erlang formulas practical approval and their usage with video flow transfer in IP networks. Erlang formulas were simulated in MATLAB program. Practical verification was realized in defined environment by using of designed video source. The result is comparison of loss calculated by MAT-LAB and loss...

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  • White Papers // Aug 2011

    Maximizing Resilient Throughput in Peer-To-Peer Network

    A unique challenge in P2P network is that the peer dynamics (departure or failure) cause unavoidable disruption to the downstream peers. While many works have been dedicated to consider fault resilience in peer selection, little understanding is achieved regarding the solvability and solution complexity of this problem from the optimization...

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  • White Papers // Jul 2011

    An Exploratory Study of Experimental Tools for Wireless Sensor Networks

    The objective of this contribution is to present expositive review content on currently available experimental tools/services/concepts used for most emerging field Wireless Sensor Network that has capability to change many of the Information Communication aspects in the upcoming era. Currently due to high cost of large number of sensor nodes...

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  • White Papers // Jul 2011

    A High-Level Architecture for Intrusion Detection on Heterogeneous Wireless Sensor Networks: Hierarchical, Scalable and Dynamic Reconfigurable

    Networks protection against different types of attacks is one of most important posed issue into the network and information security domains. This problem on Wireless Sensor Networks (WSNs), in attention to their special properties, has more importance. Now, there are some of proposed solutions to protect Wireless Sensor Networks (WSNs)...

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  • White Papers // Jun 2011

    A New Kind of Dynamic Key Protocol for Wireless Sensor Network

    For the source limitations and vulnerabilities of the sensor nodes of Wireless Sensor Networks, the authors propose the new kind of dynamic key protocol for wireless sensor network, using the unidirection of hash function and the thinking of Hill to study the dynamic key matrix. Through theoretical analysis of some...

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  • White Papers // Jun 2011

    Cross Layer Design for Cooperative Transmission in Wireless Sensor Networks

    Several protocols and schemes have been proposed to reduce energy consumption in Wireless Sensor Networks (WSNs). In this paper, the authors employ farcoopt, a cross layer design approach with the concept of cooperation among the nodes with best farthest neighbor scheme to increase the Quality of Service (QoS), reduce energy...

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  • White Papers // Jun 2011

    MDS and Trilateration Based Localization in Wireless Sensor Network

    Localization of sensor nodes is crucial in Wireless Sensor Network because of applications like surveillance, tracking, navigation etc. Various optimization techniques for localization have been proposed in literature by different researchers. In this paper, the authors propose a two phase hybrid approach for localization using Multidimensional Scaling and trilateration, namely,...

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  • White Papers // Nov 2009

    A Comparative Study of Medium Access Control Protocols for Wireless Sensor Networks

    One of the major constraints in Wireless Sensor Networks (WSNs) is power consumption. In recent years, a lot of efforts have been put into the design of Medium Access Control (MAC) protocols for WSN, in order to reduce energy consumption and enhance the network's lifetime. This paper surveyed some MAC...

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  • White Papers // Aug 2010

    A Survey on Context-Aware Sensing for Body Sensor Networks

    Context awareness in Body Sensor Networks (BSNs) has the significance of associating physiological user activity and the environment to the sensed signals of the user. The context information derived from a BSN can be used in pervasive healthcare monitoring for relating importance to events and specifically for accurate episode detection....

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  • White Papers // Jul 2011

    An Exploratory Study of Experimental Tools for Wireless Sensor Networks

    The objective of this contribution is to present expositive review content on currently available experimental tools/services/concepts used for most emerging field Wireless Sensor Network that has capability to change many of the Information Communication aspects in the upcoming era. Currently due to high cost of large number of sensor nodes...

    Provided By Scientific Research Publishing

  • White Papers // Aug 2008

    Development of an intelligent VoWLAN Services for Patient Care Improvement

    Since the rapid exchange of information and collaboration with colleagues are indispensable for the quality of care. Effective communication between care givers has been recognized as a critical factor on the high quality of patient care. Communication in medical environment is often intense and time critical, including laboratory result, complex...

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  • White Papers // Aug 2008

    On Energy-Efficient Node Deployment in Wireless Sensor Networks

    In wireless sensor networks, sensor nodes collect local data and transfer to the base station often relayed by other nodes. If deploying sensor nodes evenly, sensor nodes nearer to the base station will consume more energy and use up their energy faster that reduces system lifetime. By analyzing energy consumption,...

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  • White Papers // Aug 2008

    Relations Among Mobility Metrics in Wireless Networks

    In wireless network simulation analysis, researchers tweak mobility metrics, such as the speed or the pause time of the nodes, to get different stability levels of the network. Meanwhile, in theoretical analysis, link failure rate is widely used to model the stability of a wireless network. This paper presents an...

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  • White Papers // Nov 2008

    Improving Throughput in Wireless Local Area Networks

    The Medium Access Control (MAC) technique of standard WLANs, called the Distributed Coordination Function (DCF), is Carrier Sense Multiple Access based on Collision Avoidance (CSMA/CA) scheme with binary slotted exponential backoff. It has a two way handshaking technique for packet transmission and also defines an additional four way handshaking technique...

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  • White Papers // Nov 2008

    Performance Study of a Cross-Layer Based Multipath Routing Protocol for IEEE 802.11e Mobile Ad Hoc Networks

    Communication over wireless links identifies significant challenges for routing protocols operating. This paper proposes a Cross-layer design based Multipath Routing Protocol (CMRP) for mobile ad hoc networks, by means of the node energy signal from the physical layer. The purpose is to optimize routing decision and path quality. The nodes'...

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  • White Papers // Feb 2009

    A Priority Queuing Model for HCF Controlled Channel Access (HCCA) in Wireless LANs

    Recently, there has been a rapid growing interest in new applications requiring Quality of Service (QoS) guarantees through Wireless Local Area Networks (WLAN). These demands have led to the introduction of new 802.11 standard series to enhance access medium supporting QoS for multimedia applications. However, some applications such as Variable...

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  • White Papers // Feb 2009

    Gateways Placement in Backbone Wireless Mesh Networks

    This paper presents a novel algorithm for the gateway placement problem in Backbone Wireless Mesh Networks (BWMNs). Different from existing algorithms, the new algorithm incrementally identifies gateways and assigns mesh routers to identified gateways. The new algorithm can guarantee to find a feasible gateway placement satisfying Quality-of-Service (QoS) constraints, including...

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  • White Papers // Feb 2009

    Parallel-Transmission: A New Usage of Multi-Radio Diversity in Wireless Mesh Network

    To fully utilize the diversity of multi-radio, a new parallel transmission method for wireless mesh network is proposed. Compared with conventional packet transmission which follows "One flow on one radio", it uses the radio diversity to transmit the packets on different radios simultaneously. Three components are presented to achieve parallel-transmission,...

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  • White Papers // Feb 2009

    Generality Challenges and Approaches in WSNs

    Ignoring the generality in the design of Wireless Sensor Networks (WSNs) applications limits their benefits. Furthermore, the possibilities of future extension and adaptation are also restricted. In this paper, several methods to enhance the generality in WSNs are explained. The authors have further evaluated the suitability of these methods in...

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  • White Papers // Feb 2009

    Five Basic Types of Insider DoS Attacks of Code Dissemination in Wireless Sensor Networks

    Code dissemination is one of the important services of Wireless Sensor Networks (WSNs). Securing the process of code dissemination is essential in some certain WSNs applications, state-of-the-art secure code dissemination protocols for WSNs aim for the efficient source authentication and integrity verification of code image, however, due to the resource...

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  • White Papers // Apr 2009

    Subarea Tree Routing (STR) in Multi-Hop Wireless Ad Hoc Networks

    Subarea Tree Routing (STR), a new routing protocol for multi-hop wireless ad hoc networks, is proposed. The novelty of the STR protocol is to divide the whole network into many subareas constructed as a result of establishing subarea trees. Its main idea is to identify root nodes by manual configuration...

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  • White Papers // Apr 2009

    Research on ZigBee Wireless Sensors Network Based on ModBus Protocol

    Wireless ZigBee is a very low-cost, very low power consumption, two-way, wireless communications technology, which can be used widely in consumer electronics, home and building automation, industrial controls, PC peripherals, medical sensor applications, toys and games. Now ZigBee technology also can be used in Agriculture monitoring and control. ZigBee wireless...

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  • White Papers // May 2009

    An Energy-Aware Clustering Approach for Wireless Sensor Networks

    Energy conservation is an essential and critical requirement for a wireless sensor network with battery operated nodes intended for long term operations. Prior work has described different approaches to routing protocol designs that achieve energy efficiency in a wireless sensor network. Several of these works involve variations of mote-to-mote routing...

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  • White Papers // Jul 2010

    A QoS-Based Multichannel MAC Protocol for Two-Tiered Wireless Multimedia Sensor Networks

    Rapid penetration of small customized wireless devices and enormous growth of wireless communication technologies have already set the stage for large-scale deployment of wireless sensor networks. Offering precise Quality of Service (QoS) for multimedia transmission over sensor networks has not received significant attention. However offering some better QoS for wireless...

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  • White Papers // Jul 2010

    A New Adaptive EDCA Approach to QoS of Wireless Communications

    Under the background of intelligent transportation application, QoS for various services is different in wireless communication. Based on the MAC layer protocol, this paper analyzes the QoS in IEEE 802.11 MAC protocol framework, and proposes a new design of a Differentiation Enhanced Adaptive EDCA (enhanced distribution channel access) approach. The...

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  • White Papers // Jul 2010

    A Perspective on Traffic Measurement Tools in Wireless Networks

    To understand the characteristics of the wireless networks, the network usage data from wireless measurement tools are essential. The data collection is a process of collecting the network time-varying information in standardized format and from standard interfaces. The characteristics include signal propagation, received signal quality, network traffic, active applications and...

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  • White Papers // Aug 2010

    Topology Control and Routing in Large Scale Wireless Sensor Networks

    In this paper, a two-tiered Wireless Sensor Network (WSN) where nodes are divided into clusters and nodes forward data to base stations through cluster heads is considered. To maximize the network lifetime, two energy efficient approaches are investigated. The authors first propose an approach that optimally locates the base stations...

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  • White Papers // Aug 2010

    Research on WSN Double-Radius Localization Algorithm Based on Partition Judgment Mechanism

    Localization technology is an important support technology for WSN (Wireless Sensor Networks). The centroid algorithm is a typical range-free localization algorithm, which possesses the advantages such as simple localization principle and easy realization. However, susceptible to be influenced by the density of anchor node and uniformity of deployment, its localization...

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  • White Papers // Sep 2011

    ANCAEE: A Novel Clustering Algorithm for Energy Efficiency in Wireless Sensor Networks

    One of the major constraints of wireless sensor networks is limited energy available to sensor nodes because of the small size of the batteries they use as source of power. Clustering is one of the routing techniques that have been using to minimize sensor nodes' energy consumption during operation. In...

    Provided By Scientific Research Publishing

  • White Papers // Sep 2011

    Wireless Power Generation Strategy Using EAP Actuated Energy Harvester for Marine Information Acquisition

    The energy of a radio wave is reduced through the dispersion, the refraction and the absorption because the medium transferring the vibration of a radio wave is the seawater. In the end the reduced energy of a radio wave causes the reduced transmitting length for communication, the long postponed communication...

    Provided By Scientific Research Publishing

  • White Papers // Sep 2011

    Wireless Sensor Network for Monitoring Maturity Stage of Fruit

    In this paper, the authors present a wireless sensor network for monitoring the maturity stage of fruit. A dual-polarization coupled patch sensor, which is robust to environmental changes, was designed to operate at 2.45 GHz. It was attached to a Durian fruit for a period of days to measure the...

    Provided By Scientific Research Publishing

  • White Papers // Sep 2011

    An Energy-Based Stochastic Model for Wireless Sensor Networks

    The authors propose an energy-based stochastic model of Wireless Sensor Networks (WSNs) where each sensor node is randomly and alternatively in an active and a sleep mode. They first investigate the sensor model and derive the formula of the steady-state probability when there are a number of data packets in...

    Provided By Scientific Research Publishing

  • White Papers // Feb 2011

    Network-Wide Time Synchronization in Multi-Channel Wireless Sensor Networks

    Recent advances in wireless sensor technology have enabled simultaneous exploitation of multiple channels in wireless sensor systems. In this paper, a novel time synchronization algorithm is proposed for multichannel Wireless Sensor Networks (WSNs) called Multi-Channel Time Synchronization (MCTS) protocol. Time synchronization is critical for many WSN applications and enables efficient...

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  • White Papers // Feb 2011

    A New MAC Protocol for Moving Target in Distributed Wireless Sensor Networks

    A Wireless Sensor Network (WSN) is composed of many nodes with limited power supply; most nodes are stationary in the network which could probably involve a few mobile nodes. Various Medium Access Control (MAC) protocols specially aimed at a target locating application for WSNs have been proposed. However, most of...

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  • White Papers // Feb 2011

    Compressing Information of Target Tracking in Wireless Sensor Networks

    Target tracking is a well studied topic in wireless sensor networks. It is a procedure that nodes in the network collaborate in detecting targets and transmitting their information to the base-station continuously, which leads to data implosion and redundancy. To reduce traffic load of the network, a data compressing based...

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  • White Papers // Mar 2011

    A Fault-Tolerant Cooperative Spectrum Sensing Algorithm Over Cognitive Radio Network Based on Wireless Sensor Network

    A serious threat to cognitive radio networks that sense the spectrum in a cooperative manner is the transmission of false spectrum sensing data by malicious sensor nodes. SNR fluctuations due to wireless channel effects complicate handling such attackers even further. This enforces the system to acquire authentication. Actually, the decision...

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  • White Papers // Mar 2011

    Performance Evaluation of Routing Protocols on the Reference Region Group Mobility Model for MANET

    Group mobility is prevalent in many Mobile Ad hoc NETwork (MANET) applications, such as disaster recovery, military operations, searching and rescue activities. Group partition, as an inherent phenomenon in group mobility, may occur when mobile nodes move in diverse mobility patterns and it causes the network to be partitioned into...

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  • White Papers // Mar 2011

    Energy-Efficient and Reliable Transport Protocols for Wireless Sensor Networks: State-of-Art

    New wireless sensor network applications (e.g., military surveillance) require higher reliability than a simple best effort service could provide. Classical reliable transport protocols like Transmission Control Protocol (TCP) are not well suited for wireless sensor networks due to both the characteristics of the network nodes (low computing power, strong energy...

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  • White Papers // Mar 2011

    A Comment on Link Dynamics and Protocol Design in a Multi-Hop Mobile Environment

    This paper is a supplementary document for "Link Dynamics and Protocol Design in a Multi-Hop Mobile Environment", which presents an analytic model to obtain link lifetime in mobile wireless networks. The model outcome is used as groundwork for several mobility-related evaluations. Here, it is discussed how an improper assumption in...

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  • White Papers // Apr 2011

    A Practical Solution for Location Estimation in Manually Deployed Wireless Sensor Networks

    This paper addresses the existing research and adds another aspect of functionality by incorporating pertinent sensor nodes to provide a dynamic location discovery and estimation. The software used provides an easy graphical user interface to visualize a particular location in accordance with geographical latitude and longitude. A simple real time...

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  • White Papers // Apr 2011

    Classification of Object Tracking Techniques in Wireless Sensor Networks

    Object tracking is one of the killer applications for Wireless Sensor Networks (WSN) in which the network of wireless sensors is assigned the task of tracking a particular object. The network employs the object tracking techniques to continuously report the position of the object in terms of Cartesian coordinates to...

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  • White Papers // Apr 2011

    A Direct Trust Dependent Link State Routing Protocol Using Route Trusts for WSNs (DTLSRP)

    The traditional cryptographic security techniques are not sufficient for secure routing of message from source to destination in Wireless Sensor Networks (WSNs), because it requires sophisticated software, hardware, large memory, high processing speed and communication bandwidth. It is not economic and feasible because, depending on the application, WSN nodes are...

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  • White Papers // Apr 2011

    Ambient Intelligence: Awareness Context Application in Industrial Storage

    WSNs are designed to efficiently collect data and monitor environments, among other applications. This paper describes the concept and realization of an Active Security System for security management of warehousing of chemical substances using WSNs. The authors present an approach to modeling and simulating cooperation between intelligent products that are...

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  • White Papers // May 2011

    In-Motes EYE: A Real Time Application for Automobiles in Wireless Sensor Networks

    Wireless sensor networks have been identified as one of the key technologies for the 21st century. In order to overcome their limitations such as fault tolerance and conservation of energy, the authors propose a middleware solution, In-Motes. In-Motes stands as a fault tolerant platform for deploying and monitoring applications in...

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  • White Papers // May 2011

    Implementation Study of a Centralized Routing Protocol for Data Acquisition in Wireless Sensor Networks

    Wireless Sensor Networks (WSNs) attract considerable amount of research efforts from both industry and academia. With limited power and computational capability available on a sensor node, robustness and efficiency are major concerns when designing a routing protocol for WSNs with low complexity. There are various existing design approaches, such as...

    Provided By Scientific Research Publishing

  • White Papers // Jun 2011

    A New Kind of Dynamic Key Protocol for Wireless Sensor Network

    For the source limitations and vulnerabilities of the sensor nodes of Wireless Sensor Networks, the authors propose the new kind of dynamic key protocol for wireless sensor network, using the unidirection of hash function and the thinking of Hill to study the dynamic key matrix. Through theoretical analysis of some...

    Provided By Scientific Research Publishing

  • White Papers // Jun 2011

    MDS and Trilateration Based Localization in Wireless Sensor Network

    Localization of sensor nodes is crucial in Wireless Sensor Network because of applications like surveillance, tracking, navigation etc. Various optimization techniques for localization have been proposed in literature by different researchers. In this paper, the authors propose a two phase hybrid approach for localization using Multidimensional Scaling and trilateration, namely,...

    Provided By Scientific Research Publishing