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File:ISI Multipath Corrupted Bipolar NRZ Signal.svg

Original file ‎(SVG file, nominally 512 × 384 pixels, file size: 91 KB)

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Description

The (normalised) transmission pattern of what was an ASCII '[' (binary 01011101) using rectangular bipolar non-return-to-zero signalling but has been corrupted by multipath effects resulting in 01010101 (ASCII 'U'). This (simplistic) multipath model has the following delays added onto the main signal:

  • -0.35 scaled version after 0.4 bit periods
  • -0.20 scaled version after 0.6 bit periods
  • 0.08 scaled version after 1.2 bit periods
  • 0.35 scaled version after 2.2 bit periods
  • -0.35 scaled version after 3.3 bit periods
  • 0.29 scaled version after 4.2 bit periods
  • 0.32 scaled version after 6.0 bit periods

The output decision is modelled as a simple integrate-and-dump circuit followed by a sampler synchronised to the bit periods. Intended for use as one of a series of example images in the en:Intersymbol interference article on en. The other images include:

Made using MATLAB, converted to SVG with this script, and final editing (adding the binary values along the top) done with a text editor. If you want the MATLAB code feel free to contact me.
Date (UTC)
Source Own work
Author Blair Bonnett

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I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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Date/TimeThumbnailDimensionsUserComment
current10:21, 20 November 2007Thumbnail for version as of 10:21, 20 November 2007512 × 384 (91 KB)Blair Bonnett (talk | contribs)Update image to match others in series
11:11, 19 November 2007Thumbnail for version as of 11:11, 19 November 2007512 × 384 (91 KB)Blair Bonnett (talk | contribs)
11:05, 19 November 2007Thumbnail for version as of 11:05, 19 November 2007512 × 384 (91 KB)Blair Bonnett (talk | contribs){{Information |Description=The (normalised) transmission pattern of what was an ASCII 'W' (binary 01010111) using rectangular bipolar non-return-to-zero signalling but has been corrupted by multipath effects. For the original signal, see the image [[:Imag

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