| 2/2003 - 14 |
An Investigation of Spectral Properties of RLL Modified Duobinary CodesNicolae Dumitru ALEXANDRU |
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About this article
Date of Publication: 2003-04-02
Volume 3, Issue 2, Year 2003, On page(s): 87 - 94
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: Not assigned
Abstract
This paper deals with the calculation of power spectral density of several family members of RLL modified duobinary codes, also known as VMDB codes.These codes can be thought of as substitution codes, as the strings composed of zeros with a length exceeding an even value m+1 are substituted by appropriate substitution patterns (SP's). This is the same problem as with high-density bipolar codes HDBn, with the additional challenge that these codes are also minimum bandwidth [5] and exhibit, besides bounded RDS, a bounded value of ADS. The calculation of p.s.d. of VMDB code was performed using the method of Petrovic and MATHEMATICA. Complete formulae describing the coding factor of VMDB codes, both as a function of the normalised frequency and probability p of a mark at the coder input were derived. |
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
Permission for other use: The copyright owner's consent does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific written permission must be obtained from the Editor for such copying. Direct linking to files hosted on this website is strictly prohibited.
Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.
