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Date: 17. 05. 2012  Main page | List of the sections | Download | Weblinks section  
Programs
Symmetric lines Coaxial cables xDSL simulator ADSL bitrate calculation Rating Factor MOS to R factor conv. Cooperative networks

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* xDSL simulator

Presented 24. 11. 2006 (6233 read)

This program calculates upstream/downstream bit rate of an analysed digital system. That is done with regard to number and kind of sections (line or bridged tap) and type of noise. The noise is either described by a noise mask or generated by digital systems working concurrently with the analysed system. Help.

Program... | Autor: J. Vodrážka, P. Jareš, T. Hubený | Informační e-mailVytisknout článek



* Rating Factor for classic and broadband telephony

Presented 18. 01. 2010 (473 read)

The program calculates R-factor in two variants - range up to 130 or to 100 based on the E-model. Following is the estimated MOS parameter. The calculation can be carried out depending on the variable parameter.

Program... | Autor: J. Vodrážka, I. Pravda, P. Jareš | Informační e-mailVytisknout článek



* CW and signal laser copropagating along a fiber - cross-phase modulation between them

Presented 29. 01. 2007 (1666 read)

A CW and signal laser copropagating along a fiber - cross-phase modulation between them
This program uses split-step Fourier method. The results are two frequency spectra windows - they show us the changes in the spectra of CW and signal laser after propagation.
Dashed lines are initial spectra of the lasers and solid lines are spectra after propagation.


Program... | Autor: David Krčmařík, Aleš Kumpera, Leoš Boháč | Informační e-mailVytisknout článek



* Help for Program for Simulation of Cross-Phase Modulation

Presented 29. 01. 2007 (1607 read)


Article... | e-mailprint article



* Simulation of the optical pulse propagating in optical fiber

Presented 03. 01. 2007 (1671 read)

The solution of Schroedinger nonlinear equation by means of fourier split-step method.

Program... | Autor: Kumepra Aleš | Informační e-mailVytisknout článek



* Help for xDSL simulator

Presented 28. 11. 2006 (5146 read)

The described program accepts many input parameters for the calculation and provides results in various forms.

Article... | e-mailprint article



* Rating Factor - cooperative networks

Presented 08. 03. 2006 (3789 read)

This program calculates the Rating Factor according to input prameters of networks A and B (where the telephone communication is terminated) as well as a network C (where the calls can be routed through). If the network C is NOT used, choose G.711 codec and the zero delay.

Program... | Autor: Tomáš Hubený | Informační e-mailVytisknout článek



* ADSL bit rate calculation

Presented 08. 03. 2006 (8228 read)

This routine is developed to estimate bit rates of the asymmetric digital subscriber line (ADSL)

Program... | Autor: Tomáš Hubený | Informační e-mailVytisknout článek



* Mean Opinion Score to Rating Factor conversion

Presented 17. 02. 2006 (6921 read)

The program calculates four different values: classic conversion only for codecs up to 3.4 kHz (R-factor to 100), 7 kHz broadband codecs with linear interpolation and exponential interpolation (R-factor to 130) and universal conversion with a combination of codecs (R -factor to 100).

Program... | Autor: Tomáš Hubený | Informační e-mailVytisknout článek



* Line parameters simulator of coaxial cables

Presented 15. 02. 2006 (4371 read)

A simulator routine for calculation of the transmission line parameters of coaxial cables. The input parameters considered for calculation are: diameters, types of shielding, material of wires and inslulation.

Program... | Autor: Tomáš Hubený | Informační e-mailVytisknout článek



* Rating Factor

Presented 14. 02. 2006 (9450 read)

This simulation deals with the Rating Factor calculation due to set input parameters.

Program... | Autor: Tomáš Hubený | Informační e-mailVytisknout článek



* Line parameters simulator of symmetric lines

Presented 18. 01. 2006 (5431 read)

A simulator routine for calculation of the transmission line parameters with regard to cable geometry.

Program... | Autor: Tomáš Hubený | Informační e-mailVytisknout článek

index | 1-12 | následující | Celkem 20 článků

Server has been supported by the Czech Science Foundation within the scope of project:

‘ Omezující faktory při širokopásmovém přenosu signálu po metalických párech a vzájemná koexistence s dalšími systémy ’
(GACR 102/03/0434)


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