Freeware Listing: Intersymbol Interference

Pulse shaping filter program that finds the pole-zero locations of a transfer function, H(s), for a matched filter. H(s) equals a -desired- signal (Yout) divided by a given input signal (Yin). Both Yout and Yin are functions of frequency. Group delay may also be calculated to compliment a given data set, thus, providing a flat group delay. Minimizing Intersymbol Interference in a read/write channel for disc drives by shaping and slimming an isolated readback pulse was the main objective for writing this program. For more info, see Kost, R. and P. Brubaker; \'Arbitrary equalization with simple LC structures\'; IEEE Transactions on Magnetics, Nov.

  • Platform: WinOther, Win98, Win2000, WinXP, Win7 x32, Win7 x64, WinServer, WinVista, WinVista x64

Use this to encode bit sequences with the duobinary signaling technique or the modified duobinary signaling technique. Duobinary signaling is a three level signaling scheme that uses intersymbol interference in a controlled way instead of trying to eliminate it..

  • Publisher: N Bouman
  • Date: 26-02-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

NOTE: Though I have uploaded this toolbox, I have no contribution in this work. Programming and research in this field has been done by students given below Kapil Gulati, Marcel Nassar, Aditya Chopra, Marcus DeYoung, Arvind Sujeeth, and Navid Aghasadeghi. It is composed of various functions used to generate various types of noise statistics and to perform noise cancellation and detection.The current version (ver 1.2.1 ) supports the generation of Middleton Class A, Symmetric Alpha Stable, and the bivariate Middleton Class A random variables. For the evaluation of communication performance under the presence of the aforementioned noise types, the current version (ver 1.

  • Platform: Matlab, Scripts

Current direct sequence code division multiple access (DS-CDMA) system suffer from Multiple access interference (MAI) and Inter symbol interference (ISI) due to the frequency selective channel. This interference can be avoided by use of Adaptive Beamforming. There are two different minimum variance Beamformer configurations for the base station receiver in direct sequence code division access (DS-CDMA) systems, namely a chip- based and a symbol-based configuration. In this paper chip- based and symbol- based configurations are studied. In symbol-based configuration, spatial diversity is exploited after despreading and interfering components are rejected, based on both their power and code correlation with the Signal of interest (SOI).

  • Platform: Matlab, Scripts

Walsh-Hadamard codes are mutually orthognal codes, thus when used in synchronous CDMA, the interference between users is zero. This programm generates Walsh-Hadamard codes and also checks the orthogonality. You can change the code length by changing value of "code_length" at the top of program an optimized version of the same code provided by Imran Ali.

  • Platform: Matlab, Scripts

iCorrector is a small and accessible LabVIEW-based tool that's been designed to model and correct the interference fringes.

You can use this handy tool to fix the fringes that affect the photoluminescence excitation spectra of thin-film dielectric samples.

The calculations of the interference profile are performed taking into account the experimental conditions: excitation light incidence angle, wavelength range, luminescent centers distribution.


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  • Platform: WinOther

SelfUpdate - Maintaining the employee's detail up to date in the Active Directory is a cumbersome task for admin or help desk. They must spent few hours to check whether the information is accurate or not. If an employee changes his phone number or moves to some other location, his new information has to be updated in Active Directory. If it is not done, co-workers may retrieve the incorrect information during a needy situation and results in unnecessary burdens. Even the few updates for every week is considered to be wastage of time for the administrator when calculated for the whole year. So we can save the administrator's valuable time by delegating the employees to update their own contact information whenever it is changed.

  • Publisher: Adutils
  • Date: 09-12-2011
  • Size: 29593 KB
  • Platform: Win2000, Win7 x32, Win7 x64, Windows Server, WinOther, WinVista, WinVista x64

Diffraction Lab Basic is a real-time 3D simulation of wave diffraction in a lab bench setup. It demonstrates diffraction from a square aperture, square array of point sources and two and three point sources on a circle. The simulation generates diffraction patterns for the Fresnel limit, Fraunhofer limit and any intermediate value. Numerical data can be taken from the diffraction patterns so it provides an experimental setup to compare against wave diffraction theory..

  • Platform: WinOther

A 3D surface upon which effects can be applied. Written in C (with a little C++) and using openGl to render. Different effects are implemented as dlls. Can be used to illustrate effects link constructive/destructive interference..

  • Platform: WinOther

A logging shell that can log commands from a shell. Designed to act as an automated lab-book for people that conduct experiments in their standard shell environments. Users can log and re-run experiments with little/no manual effort or interference..

  • Platform: Linux, Mac OS X, Unix

A privacy and security aware mailing list manager, perfect for allowing closed groups to interact on the Internet without interference from outsiders and former insiders..

  • Platform: Linux, Mac OS X, WinOther

The Gyre is a Neverwinter Nights persistent world. The focus of development is on NWN scripts that allow a Neverwinter Nights module to dynamically change in response to player action, without Game Master or Administrative interference..

  • Platform: Linux, Unix, WinOther

This is an old program (1.999) that I have written for understanding radiation patterns of antennas. Basically I was looking for the relationship between interference diagram (Fourier transform of ilumination, usually called Array Factor) and 3D radiation pattern of the Array. For that reason, it represents XY, XZ and YZ planes instead of H and E. On this version the visible space is not update. On final version (I don't find it), the visible space where delimitated between lines over the interference pattern, and you can see how it varies with distance between antennas and ilumination phase law.

  • Platform: Matlab, Scripts

A collection of m-files aimed at learning and teaching about the principles of diffraction gratings. Some of these show a cross section of the geometry of a diffraction grating, a common illustration in textbooks of optics, spectroscopy, and analytical chemistry. Sliders on the figures allow real-time interactive control of the incidence angle, grating ruling density (lines/mm), wavelength, and diffraction order. Others demonstrate how grating operation arises from the interference of reflections from multiple grooves. For more details, see http://www.wam.umd.edu/~toh/models/matlab/...tionGrating.

  • Platform: Matlab, Scripts

This program simulates the interference pattern of two Gaussian beams. The simulation assumes that the beams are combined at a beam combiner which tilt angle (along x-direction) is arbitrary. The distance z from the position of minimal beam waist w0 to the beam combiner is, as well as w0, arbitrary for each beam. A graphical user interface is implemented. The output consists of the intensity on the observation screen (at arbitrary distance to beam combiner) and the phase of the light field at this position. Both is plotted in different figures and also exported to the base workspace.http://www.

  • Platform: Matlab, Scripts

The AOFlagger is a tool that can find and remove radio-frequency interference (RFI) in radio astronomical observations. The code has been highly optimized for speed and accuracy. It is used by default for the LOFAR radio telescope and thus is in productional stage. The software can run in a fully automated way, but a graphical interface is provided to analyse results and tweak the strategy. The preferred input file format is the Casa Measurement Set (MS) format.

I believe that the AOFlagger is the best available flagger, both in terms of accuracy and speed. It has been succesfully used on several interferometric telescopes, including LOFAR, WSRT, VLA, GMRT, ATCA and MWA, and the single dish Parkes radio telescope.

  • Platform: Linux, Unix

The program simulates the interference pattern with all different kinds of slits and grids.
Interferenz License - GNU General Public License (GPL).

  • Platform: WinOther

Interference in wireless networks is one of the key capacity-limiting factors. Recently developed interference-embracing techniques show promising performance on turning collisions into useful transmissions. However, the interference-embracing techniques are hard to apply in practical applications due to their strict requirements. In this paper, we consider utilising the interference-embracing techniques in a common scenario of two interfering sender-receiver pairs. By employing opportunistic listening and analog network coding (ANC), we show that compared to traditional ARQ retransmission, a higher retransmission throughput can be achieved by allowing two interfering senders to cooperatively retransmit selected lost packets at the same time.

  • Platform: WinOther

The RTP Monitor discovers RTP flows, used by Internet phone applications, and monitors their QoS metrics, observing the interference caused by traffic congestion. It uses distributed collecting agents and provides feedback about the quality in the calls.
RTP Monitor License - Academic Free License (AFL).

  • Platform: WinOther

Linux based Php software that generate random question and calculate score and create live interference examination online and offline.This inter fence will be multilingual and support multiple subjects
Quiz software License - GNU General Public License (GPL).

  • Platform: WinOther

Intersymbol Interference: Freeware | All

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