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An FPGA based high speed network performance measurement for RFC 2544

An FPGA based high speed network performance measurement for RFC 2544

Aiming at the problem that existing network performance measurements have low accuracy for (Request for Comments) RFC 2544, this paper proposes a high-speed network performance measurement based on field-programmable gate array (FPGA). The active measurement method is used to generate probe data frames, and a passive measurement method is employed to count network traffic. According to the statistical laws based on throughput variation, interval stretching mechanism is used to dynamically adjust interframe gap. When our approach approaches the maximum throughput, the network performance parameters are achieved. A prototype based on NetFPGA is also implemented for evaluation. Experimental results show that our approach can be applied in high-speed network and the latency can be accurate to the nanosecond. Compared with network performance measurement using software to send probe data frames and a similar work based on FPGA, our approach can be more flexible and the evaluation data are more accurate.
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Literature Survey on Congestion control for high-speed wired network

Literature Survey on Congestion control for high-speed wired network

Congestion control in high speed networks The internet is a global infrastructure for information exchange that has revolutionized the social, economic, and political aspects of our lives. One of the most crucial building blocks of the internet is a mechanism for resource sharing and controlling congestion on the internet .Congestion can be defined as a network state in which the total demand for resources, e.g. bandwidth, among the competing users, exceeds the available capacity leading to packet or information loss and results in packet retransmissions (Papadimitriou, 2011). At the time of congestion in a computer network there will be a simultaneous increase in queuing delay, packet loss and number of packet retransmissions. In other words congestion refers to a loss of network performance when a network is heavily loaded. Keshav (2007) has defined it as “A network is said to be congested from the perspective of a user if the service quality noticed by the user decreases because of an increase in network load.”
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Performance Analysis of HSPA Technology for Networked Control System Application

Performance Analysis of HSPA Technology for Networked Control System Application

A number of papers have shown the results of performance analysis on 3G and 3.5G cellular networks through simulation [7], [8]. To have an accurate model of cellular networks delay and dropout for NCS applications, it is necessary to analyze and improve the model using empirical data [9]. A number of papers have completed the analysis by experimental. Reference [10] discussed a performance analysis of data with UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) through HSPA (High Speed Packet Access) network. The performance has been evaluated using the parameters of goodput, delay and jitter that occurred on the network without discussing the presence of dropout or packet loss. While reference [11] and [12] have conducted the experiment on 3G and 3.5G cellular technologies with different ground speed scenarios. They analyzed the effects on the parameters of throughput, jitter and loss rate. Reference [13] included the operator's network traffic data into simulation to calculate the effect of number of users to throughput. The parameters those have been analyzed are jitter, throughput, and packet loss on average. Some of them provide information solely on RTT (Round Trip Time) delay on average. The one-way delay experimentation was conducted by Soto et al. [12]. Experiment was done with duration of 10 seconds for every test. The obtained data was averaged in 10 second for 40 tests for every test scenario. But, in the experiment of Solo, no mention the size of data to be sent and the time interval of each test.
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Application of remote monitoring and management of high speed rail transportation based on ZigBee sensor network

Application of remote monitoring and management of high speed rail transportation based on ZigBee sensor network

Based on the actual situation of high-speed train oper- ation environment monitoring, the current situation and business requirements of the existing high-speed train running environment monitoring are fully investigated and analyzed, the advantages of wireless sensor networks is exerted, and the new idea of applying wireless sensor network technology in the field of high-speed train oper- ation environment monitoring is put forward; the overall framework and logical framework of high-speed train operation environment monitoring system based on WSN are proposed; a topology structure for ground wireless sensor networks is designed; the node deploy- ment strategy and routing protocol for linear wireless sensor networks are studied; the performance of ground to ground communication for various wireless commu- nication technologies is tested in real high-speed rail en- vironment, a transmission scheme of vehicle ground wireless sensor network based on relay transmission is designed, and it has been verified in field test; a natural disaster monitoring system based on wireless sensor net- work is designed. The overall framework of high-speed train operation environment monitoring system based on SOA and wireless sensor network is proposed. The framework runs through railway computer networks and wireless sensor networks, which can integrate all the
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Effective Design of an High speed Digital Fault Tolerant Architecture

Effective Design of an High speed Digital Fault Tolerant Architecture

In the era of deep sub-micron technology, probability of chip failure has been increased with increase in chip density. A system must be fault tolerant to decrease the failure rate and increase the reliability of it. Multiple faults can affect a system simultaneously and there is a trade-off between area overhead and number of faults tolerated. This paper presents high speed fault tolerant architecture design for digital applications. The fault containment and parallel processing capabilities of computers network are being exploited to provide a high performance, high availability network capable of tolerating a broad scope of hardware, software, and operating system faults.
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Spectral Coding System for High Speed Optical Communication Network

Spectral Coding System for High Speed Optical Communication Network

Abstract: This paper shows the development of new code for OCDMA system. The characteristics of code based on the unit cross correlation. The code is such that it follows the minimum cross correlation. The direct detection method is used to recover the information at the receiving end. The result and analysis shows that system has better performance compare to existing method such as MDW, RD Method. Simulation is performed at high data rates from 10Gbits/s to 20 Gbits/s.

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Performance Analysis of High Speed Adders

Performance Analysis of High Speed Adders

The most important feature of modern day electronics is to build low power high speed devices both due to increase in integration of components and reduction in size. Over the decades the battery life has only improved by a factor of 2 or 4 whereas the power of digital IC’s has increased with over four orders of magnitude.A low power design needs to be adopted for future advancements or else the devices will suffer from a short battery life or very heavy battery packs. It is also important to avoid local areas of high power dissipation which may cause hotspots, and also to reduce the need for a low power impedance and ground distribution network which may interfere with signal interconnections. All complex adder architectures are constructed from its basic building blocks such as Half Adder (HA) and Full Adder (FA). In this paper, the performance parameters of various adders are compared
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Design an High speed Digital Fault Tolerant Architecture

Design an High speed Digital Fault Tolerant Architecture

In the era of deep sub-micron technology, probability of chip failure has been increased with increase in chip density. A system must be fault tolerant to decrease the failure rate and increase the reliability of it. Multiple faults can affect a system simultaneously and there is a trade-off between area overhead and number of faults tolerated. This paper presents high speed fault tolerant architecture design for digital applications. The fault containment and parallel processing capabilities of computers network are being exploited to provide a high performance, high availability network capable of tolerating a broad scope of hardware, software, and operating system faults.
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Seamless Communication Network for Enhanced Performance in Tunnel Based High Speed Trains using Q Leach and Fodpso Algorithm

Seamless Communication Network for Enhanced Performance in Tunnel Based High Speed Trains using Q Leach and Fodpso Algorithm

lifetime. WSN nodes have limited energy due to powered by battery. The algorithm is used for optimization process of the WSN, it minimize the energy consumption. The algorithm complexity is increased by the penalty function. To apply ant colony routing algorithm is leads to high average and a minimal residual energy level. It extends the life time of the wireless network. Vlad Tabus and Dmitri Moltchanov et.al [19] have presented the suboptimal design. The chain topology in chain routing with even energy consumption (CREEC) is used. The communication of network occurs between the same pairs of nodes it keeps topology reconfiguration as minimum. The optimal scheduling is used to maximize the network lifetime. Combination of chains with upper bounded is obtains the maximum lifetime. The energy consumption is depends on the two important factors such as performance of motes and distance. The two-stage star topology is transmitting the information in the wireless sensor network. The sophisticated hierarchical structure is used to hierarchical power efficient gathering in sensor information system. The power efficient data gathering is done through the non-hierarchical tree topology. Spanning tree algorithm is minimizing the energy consumption. The upper bound on the achievable lifetime is used to understand the range of possible solution. Rejina Parvin and Vasanthanayaki C et.al [20] have presented the PSO. The E-OEERP is terminates the some formation of nodes and increases the life time of the network by the concept of particle swarm optimization (PSO) with Gravitational search algorithm. The supportive node of
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Measurement analysis for handover 
		initiation procedure in a high speed train environment

Measurement analysis for handover initiation procedure in a high speed train environment

High speed train has been the most prominent transportation that been used by the public to save the travel time due to the road congestion especially during the peak hour. Most of people travel by trains for about forty to fifty minutes to reach their destination. In parallel with the development of high speed trains nowadays as the trains’ speed can reach up to 350km/h, there have been extensive researches to improve the data rates for mobile wireless communication. Higher data rate and reliable mobile communication are desirable when moving in high speed trains. The passengers on board usually play online application, surf internet, check emails, reading books and many more to kill time. As a solution, the latest LTE system seems to be a convincing platform to provide high data rates since it is expected to support high peak data rates of 1Gbps in downlink for low mobility and up to 100Mbps in high mobility environment. This paper provides the measurement analysis of current deployed network along high speed rail road. The results in this paper will be the pilot parameter to be analyzed further in order to improve mobile communication handover performance for high speed trains in LTE system.
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Performance issues in high speed networks

Performance issues in high speed networks

Efficient use of a network's bandwidth can be achieved by statistically multiplexing traffic. To meet the performance requirements of a call, a good congestion control mechanism is neces[r]

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Performance analysis of error recovery schemes in high speed network - part I

Performance analysis of error recovery schemes in high speed network - part I

The result shows that under a particular condition, if we keep the number of hops between the source and the destination node below a certain number, the frame relay scheme can have shor[r]

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Performance analysis of error recovery schemes in high speed network - part II

Performance analysis of error recovery schemes in high speed network - part II

A link level virtual circuit model of the link-by-link error recovery scheme is shown in. Fig(6)[r]

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A performance model for the link-transport layer serving XTP in a high speed network

A performance model for the link-transport layer serving XTP in a high speed network

The queue length distribution observed at the MMB P-stream packet arrival instances, and the waiting time distribution and the blocking probability for the MMBP-stream are then obtained [r]

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Performance Of CrN/TiN Coated On High Speed Steel

Performance Of CrN/TiN Coated On High Speed Steel

PVD processing is carried out in high vaccum at temperatures between 150 and 500°C. The high-purity, solid coating material (metals such as titanium, chromium and aluminium) is either evaporated by heat or by bombardment with ions (sputtering). At the same time, a reactive gas (e.g. nitrogen or a gas containing carbon) is forms a compound with the metal vapour and is deposited on the tools or components as a thin, highly adherent coating. In order to obtain a uniform coating thickness, the parts are rotated at uniform speed about several axes.
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High-Performance Monitor for A Network Processor

High-Performance Monitor for A Network Processor

although this approach can exhibit a lag between when an attack starts execution and when it is identified. Our new approach, based on a deterministic finite automaton (DFA), provides an advance over both of these previous techniques. It has been previously shown that network processors with combined data and instruction memory (von Neumann architecture) are susceptible to attacks that write executable code to the processor stack [1]. However, contemporary network processors generally use separated instruction and data memories (Harvard architecture) for increased code security and performance. These architectures make it impossible to execute code from a stack located in data memory, drawing into question whether data plane attacks are feasible in these types of architectures. In this work, we show that data plane attacks on Harvard architecture NPs are feasible and a new instruction-level
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High speed Railway External Power Supply Reliability Evaluation of Bayesian Network

High speed Railway External Power Supply Reliability Evaluation of Bayesian Network

In recent years, the method of bayesian network has been successful used in many fields. bayesian network in lit- erature [2] is applied to fault diagnosis of power grid, bayesian network in literature [3] is applied to reliability evaluation of distribution network, bayesian network in literature [4] is used in power system reliability assess- ment. After years of development and perfection , bayes- ian networks has become an effective evaluation of reli- ability, general method.

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Network selection mechanism for telecardiology application in high speed environment

Network selection mechanism for telecardiology application in high speed environment

The seamless handover management is a challenging issue in heterogeneous wireless networks. To provide seamless handover in heterogeneous networks, IEEE organization had approved a new standard in 2008 named IEEE802.21, Media Independent Handover (MIH) which enables handover in heterogeneous network with no perceivable interruption to an on-going voice or video conversation [39]. MIH provides link configuration, radio measurement reporting, new link discovery, and resource availability check. However, it does not include handover decision making which is the heart of the handover process [39, 40]. Handover decision is crucial for selecting the correct target and triggering handover at the right time so that the quality of the telecardiology services can be maintained at the acceptable level.
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Establishing a valuable method of packet capture and packet analyzer tools in firewall

Establishing a valuable method of packet capture and packet analyzer tools in firewall

Deep Packet Inspection is a form of network packet filtering that examines the data part of a packet and it passes an inspection point, searching for protocol non-compliance, viruses, spam, intrusions or predefined criteria to decide if the packet can pass or if it needs to be routed to a different destination, or for the purpose of collecting statistical information (Bendrath, 2009; Office of the Privacy Commissioner Of Canada, n.d.; Porter, 2010). Deep Packet Inspection enables network management features, user service, and security functions as well as internet data mining, eavesdropping. DPI is currently being used by the enterprise and governments in a wide range of applications.
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A Review of High-Speed Grinding and High-Performance Abrasive Tools

A Review of High-Speed Grinding and High-Performance Abrasive Tools

To compete with to CBN grinding, various grinding-tools manufacturers have recently launched grinding tools that integrate conventional abrasives for a higher MRR at high cutting speeds. Vitrified bonded wheels offer not only economic advantages but also the excellent performance of a highly porous tool, whose open structure enables self-sharpening. Sintered corundum tools offer HSG up to cutting speeds of 180 m/s. Because of their characteristics and efficiency they are closing the gap between the very hard superabrasives (diamond and CBN) and the conventional grinding abrasives. Sintered corun- dum combines the properties of the ceramic (K) and fused aluminium oxide (S) into vitrified grinding wheels [7]. This combination (Figure 3a) exhibits a high level of sharpness, aggressive cutting, good form holding and a long life.
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