Network simulation thesis

Thesis Topics in Wireless Ad-hoc Networks Following are the list of topics in wireless ad-hoc networks for thesis: To compare various reactive, proactive and hybrid protocols for MANET and improve efficient protocol using a bio-inspired technique.

Network simulation thesis

This thesis generalizes the multilayer perceptron networks and the associated backpropagation algorithm for analogue modeling of continuous and dynamic nonlinear multidimensional systems for simulation, using variable time step discretizations of continuous-time systems of coupled differential equations.

A major advantage over conventional discrete-time recurrent neural networks with fixed time steps, as well as Kalman filters and time-delay neural network TDNN models with fixed time steps, is that the distribution of time steps is now arbitrary, allowing for smaller time steps during steep signal transitions for much better trade-offs between accuracy and CPU time, while there is also still freedom in the choice of time steps after the neural network model has been generated.

In fact, multirate methods for solving differential equations can be readily applied. The use of second order differential equations for each neuron allows for complex oscillatory behaviours even in feedforward networks, while allowing for efficient mappings of differential-algebraic equations DAEs to a general neural network formalism.

The resulting formalism represents a wide class of nonlinear and dynamic systems, including arbitrary nonlinear static systems, arbitrary quasi-static systems, and arbitrary lumped linear dynamical systems.

Envisioned application areas include the representation and control of nonlinear neural dynamics and its use in neuroengineering, oscillatory brain dynamics, neuromodulation, and computational neuroscience. Other possible application areas include nanoscale device modeling, and modeling of signal propagation, delays and responses in dynamical systems in general.

With feedback from output to input, attractor neural networks can be represented for modeling arbitrarily complex brain dynamics including various forms of chaotic behavior. Note that the approach may also be applied to non-deterministic and noisy systems that are characterized by differential-algebraic equations for the deterministic statistical models, e.

Since the methods described in this thesis generalize multilayer perception networks, they may similarly be readily extended to incorporate modern deep learning methods for layer-by-layer pre-training with stacked autoencoders, e. IC design, modeling, artificial neural network ANNdynamic neural network DNNvariable time steps, differential equations, circuit simulation, transient analysis, transient sensitivity, AC analysis, AC sensitivity.

Committee members at the Ph. Neural Network Applications in Device and Subcircuit Modelling for Circuit Simulation by feedback Summary This thesis describes the main theoretical principles underlying new automatic modelling methods, generalizing concepts that originate from theories concerning artificial neural networks.

The new approach allows for the generation of macro- models for highly nonlinear, dynamic and multidimensional systems, in particular electronic components and sub circuits.

Such models can subsequently be applied in analogue simulations. The purpose of this is twofold. To begin with, it can help to significantly reduce the time needed to arrive at a sufficiently accurate simulation model for a new basic component - such as a transistor, in cases where a manual, physics-based, construction of a good simulation model would be extremely time-consuming.

Secondly, a transistor-level description of a sub circuit may be replaced by a much simpler macromodel, in order to obtain a major reduction of the overall simulation time. To achieve this goal, the standard backpropagation theory for static feedforward neural networks has been extended to include continuous dynamic effects like, for instance, delays and phase shifts.

This is necessary for modelling the high-frequency behaviour of electronic components and circuits. From a mathematical viewpoint, a neural network is now no longer a complicated nonlinear multidimensional function, but a system of nonlinear differential equations, for which one tries to tune the parameters in such a way that a good approximation of some specified behaviour is obtained.

Based on theory and algorithms, an experimental software implementation has been made, which can be used to train neural networks on a combination of time domain and frequency domain data.

Network simulation thesis

Subsequently, analogue behavioural models and equivalent electronic circuits can be generated for use in analogue circuit simulators like Pstar from PhilipsSPICE University of California at Berkeley and Spectre from Cadence. The thesis contains a number of real-life examples which demonstrate the practical feasibility and applicability of the new methods.

Click image for LaTeX source. Curriculum Vitae Peter Meijer received his M. From September until August he worked as a research scientist at Philips Research Laboratories in Eindhoven, The Netherlands, initially focussing on black-box modeling techniques for analogue circuit simulation.

In May he received his Ph. In September the focus of his work shifted towards display technologies. In parallel with his regular work in the electronics industry, and in line with his interests in human sensing capabilities, he developed an image-to-sound conversion system known as "The vOICe", aimed at the development of a synthetic vision device prosthetic vision system for the totally blind.

Patents on neural networks: Dynamic neural net, September 3, Signal generator for modelling dynamical system behaviour, August 4, The goal of this thesis is to compare, with an emphasis on simulation, two wire- less network protocols: WiFi, which is de ned by the IEEE speci cation and Zigbee, which is de ned by IEEE NETWORK SIMULATION THESIS Network Simulation Thesis, a guiding platform for students who wish to nourish their skills and talents along with their thesis offer you a dynamic environment, where our experts and developers impart you their knowledge and experience to make thesis a ground breaking success.

The simulator is capable of producing both 3- and 2-dimensional visualizations of a traffic network. In this thesis, I describe the key components of the simulator, . The purpose of this master thesis is to construct a simulation framework to test the efficiency in a network consisting of 8-point hypercircles.

The basic idea of the. Simulation-based optimization is an emerging field which integrates A key guiding principle in this thesis is the use of the distribution infor- for his courses on integer programming and network flow. I am very grateful to researchers in the Biomedical Engineering Depart-ment: Punit Prakash, Dr.

Mark Converse and Dr. John Webster. This entry was posted in Development, Networking, Technical Report, Thesis and tagged Babak Ghaffari, Jawad A. Salehi, Mohammad-Reza Pakravan, OCNS, Optical CDMA Network Simulator on July 10, by blogger.

List of Network Simulators - which network simulators to choose