sdh and sonet networks ppt

... roaming and IP handoff, and cluster crea-tion, splitting and merging Especially, in wireless sensor networks, observer nodes should be equipped with addi-tional computaaddi-tional, energy, and communication ... inte-grates the two types of evidence, handles incompleteness and duplication of information in them, and allows the generation of potential and provable actions and attack scenarios We consider a ... framework for digital investigation in wireless networks, especially sensor and ad hoc networks, turns out to be more tricky and challenging than in wireline networks To do so, a set of requirements

Ngày tải lên: 21/06/2014, 02:20

... Cellular and Mobile Networks Ingo Viering,1Andreas Lobinger,2and Szymon Stefanski3 1 Nomor Research GmbH, 81541 Munich, Germany 2 Nokia Siemens Networks, 81541 Munich, Germany 3 Nokia Siemens Networks, ... 81541 Munich, Germany 3 Nokia Siemens Networks, 53-611 Wroclaw, Poland Correspondence should be addressed to Andreas Lobinger,andreas.lobinger@nsn.com Received 11 February 2010; Accepted 23 July ... work is long term e volution, and the most important uplink effects such as fluctuating interference, power control, power limitation, adaptive transmission bandwidth, and control channel limitations

Ngày tải lên: 21/06/2014, 11:20

... interactions of people and vehicles 1 Introduction We consider the problem of event modelling and recognition in visual surveillance and introduce an approach based on Markov Logic Networks ([1]) that ... could handle dynamic domains that involve, for example, time and location Here, we represent our knowledge in the form of production rules, production → conclusion, and use deduction to ground (and ... quantifier and will be expanded to a disjunction of conjunctive clauses when grounded For example, suppose that passBy(P1, L, T ) and passBy(P2, L, T ) are true for two persons P1and P2(i.e two

Ngày tải lên: 23/03/2014, 13:20

... Increased Bandwidth Demand 24  Savings on Intermediate Bandwidth 24  Combined VC-4 and IMA Aggregation 25  Trang 4CONTENTS Integration of 2G and 3G Traffic 26  TDM Multiplexing of 2G and 3G Traffic ... bandwidth demand, applications, and so on, networks must be as cost-effective as possible in their initial, low-level usage phase Equipment costs, as well as expenditure on leased bandwidth and ... minimum, yet allowing these networks to provide for fast growth and cost-effective bandwidth increase 3G access networks are based on two distinct technologies: transmission and ATM Conventional 3G

Ngày tải lên: 19/04/2014, 19:07

... known and unknown CSI and their special cases, and Section 4 introduces the suboptimalestimator In Section 5, we analyze the asymptotic performance and complexity of the presented MLEs anddiscuss ... observation and channel models, which minimizes the MSE of parameterestimation The bandwidth and energy constraints are two critical issues for the design of WSNs When the strictbandwidth constraint ... access fading channels in wireless sensor networks— optimal and suboptimal estimatorsmultiple-Xin Wang∗1 and Chenyang Yang1 1 School of Electronics and Information Engineering, Beihang University,

Ngày tải lên: 20/06/2014, 04:20

... algorithms and artificial neural networks Joel Quintanilla-Domínguez1,3*, Benjamín Ojeda-Magaña1,2, Alexis Marcano-Cedeño1, María G Cortina-Januchs1,3, Antonio Vega-Corona3and Diego Andina1 Abstract ... > 1 andh > 1 The values of a and b repre-sent the relative importance of membership and typical-ity values in the computation of the prototypes, absolute weight of the membership value and ... k-means algorithm, feature extraction based on window-based features such as the mean and standard deviation and, finally, the use of a classifier based on an artificial neural network (ANN) to

Ngày tải lên: 20/06/2014, 22:20

... grants to request more bandwidth, and the nrtPS service can get more bandwidth On the other hand, the algorithms WRR and RR do not interact with the polling mechan-ism, and they use a fixed polling ... met 3.2.2 Ensuring minimal bandwidth for rtPS and nrtPS services The scheduler ensures the minimal bandwidth for rtPS and nrtPS services in accordance with the minimum bandwidth requirement per ... algorithm stores the amount of band-width received for each connection (lines 7 and 25), and verifies, using the QoSMonitoring() module, if the mini-mum bandwidth of the rtPS and nrtPS services is within

Ngày tải lên: 20/06/2014, 22:20

... Philippe De Doncker1 Abstract Personal area networks and, more specifically, body area networks (BANs) are key building blocks of future generation networks and of the Internet of Things as well In ... low-loss and phase-stable cables interconnect all components, and the IF-bandwidth was set to 100 Hz to enlarge the dynamic range to about 120 dB The experimental scenario is presented in Figure 1 and ... from (17) and the final expression is given in (19) D Minimum transmit powers The first terms in the sum at the right-hand side of (17) and the first multiplicative term at the right-hand side

Ngày tải lên: 20/06/2014, 22:20

... placement and replacement together with dynamic bandwidth allocation for OVSF-CDMA-based systems In addition, in 3G networks, the assignment of bandwidth (or constrain the power and bandwidth ... provide delay and rate guarantees for real-time traffic, and fair access for non-real-time traffic, and (iv) the reassignments during dynamic bandwidth allocation While WCDMA-based cellular networks use ... support delay and rate guarantees for time flows and to provide fairness for non-real-time flows on the downlink of WCDMA- and VSF-OFCDM-based cellularnetworks CFCA not only assigns bandwidth dynamically

Ngày tải lên: 21/06/2014, 11:20

... percentage of correct identification is about 97% In [6], Wong and Nandi have proposed a method for ADMR using artificial neural networks and genetic algorithms In their study, they have presented ... densities of phases and amplitudes In [20], Pedzisz and Mansour derived and analyzed a new pattern recognition approach for automatic modulation recognition of M-PSK signals in broadband Gaussian noise ... (MLPs), radial basis function (RBF) networks, and self-organizing maps (SOMs) We had chosen MLP feed-forward networks in our work because of their simplicity and effective implementations; also

Ngày tải lên: 21/06/2014, 16:20

... Research Article QoS Differentiated and Fair Packet Scheduling in Broadband Wireless Access Networks Rong Yu,1Yan Zhang,2and Shengli Xie1 1 School of Electronic and Information Engineering, South ... BWA networks Packet scheduling algorithms, which are in charge of the bandwidth allocation and multiplexing at the packet level, play key roles for resource sharing and QoS provisioning in BWA networks ... fading and inter-user mobility, and so forth As a result, the channel conditions of users may vary with time and location asynchronously at random, leading to the so-called time-dependent error and

Ngày tải lên: 21/06/2014, 23:20

... Communications and Networks (IC3N ’98), pp 153–161, Lafayette, La, USA, October 1998 [3] K H Wang and B Li, “Efficient and guaranteed service coverage in partitionable mobile ad hoc networks, ... (for both x-andy-directions). 3.1.1. Analytical modeling The SIMM model uses two Markov chains with discrete pa- rameters and 3 states (0, 1, and 2), to represent movements in the x-andy-coordinate, ... coordinate, x and y), and not the positions themselves. For this model, the absolute value of the velocity varia- tion is given by a truncated geometric random variable dis- tributed between 1 and b

Ngày tải lên: 22/06/2014, 19:20

... control (MAC) and routing protocols for vehicular networks, and the various factors that affect their design and performance The mobility and speed of the communicating nodes in vehicular networks ... with-inside and with-outside vehicle via vehicu-lar networks, and new technologies have been developed for vehicular networks This chapter is meant to introduce the emerging area of vehicular networks and ... the size and complexity of the network grows, integration, maintenance and troubleshooting will become a major challenge To facilitate integration and troubleshooting of various nodes and networks,

Ngày tải lên: 27/06/2014, 01:21

... Theoretical Biology and Medical Modelling Open Access Research Bringing metabolic networks to life: convenience rate law and thermodynamic constraints Wolfram Liebermeister* and Edda Klipp Address: ... assays and stored in kinetic databases. Background Dynamic modelling of biochemical networks requires quantitative information about enzymatic reactions. Because many metabolic networks are known and ... concentration a and product concentration b (measured in mM), the reaction rate reads with enzyme concentration E, turnover rates and (measured in s -1 ), the shortcuts ã = a/ and = b/, and Michaelis-Menten

Ngày tải lên: 13/08/2014, 16:21

... CCM technologies and determine their suitability to operating system installation and upgrade Students determine the hardware and software requirements and consider the benefits and shortcomings ... knowledge of unattended and scripted installations
Basic experience or knowledge of RIS and SMS
The knowledge and skills necessary to define and implement an installation and upgrade plan The ... installations and upgrades remotely, the time and effort taken to perform them, and the complexity of the tools and scripts used It is important to identify the number of installations and upgrades

Ngày tải lên: 10/12/2013, 15:15

... implemented and managed
Determining Software Distribution and Management Needs In this section, students learn how to identify the limitations and disadvantages of current technologies, and how ... instructions and to the details of the scenario
Divide the class into groups of two or more students
Present the lab and make sure that students understand the instructions and the purpose ... of the scenarios and highlight any key information
Remind students to consider the relative merits of SMS and IntelliMirror regarding software distribution and management, and to think about

Ngày tải lên: 10/12/2013, 15:15

... One, Inc and modeled after the electronic data interchange (EDI) standards American National Standards Institute (ANSI) X.12 and Electronic Data Interchange for Administration, Commerce and Transport ... Visual Studio, and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries The names of actual companies and products ... 2420A_04.ppt ! Module 4 demonstration, Publishing and Uploading a Catalog, 2420A_04d005.avi To prepare for this module: ! Read all of the materials for this module ! Complete the practices and

Ngày tải lên: 10/12/2013, 16:15

... Modules Each standard module contains three front panel jacks for easy passive and/or intrusive access to the circuit and two rear connectors for attachment to data terminating and/or communication ... provided to perform various other functions and special interfacing as might be required by the user Patch cords are available in standard and reverse key types and in a wide variety of lengths w w ... 12/02 • 517 Data Management and Access Products Table of Contents w w w a d c c o m • + - - - 8 • - 0 - 6 - Data Management and Access Products 12/02 • 517 Data Management and Access Products Introduction

Ngày tải lên: 10/12/2013, 17:15

... Trang 1Understanding Delay in Packet Voice Networks Introduction When designing networks that transport voice over packet, frame, or cell infrastructures, it is important to understand and account ... For private networks 200 ms of delay is a reasonable goal and 250 ms a limit, but all networks should be engineered such that the maximum expected voice connection delay is known and minimized ... collected at T3 and T4 The third block is compressed at T5 and the packet assembled and sent (assumed to be instantaneous) at T6 Due to the pipelined nature of the Compression and Packetization

Ngày tải lên: 11/12/2013, 14:16