Modeling an E1/TU12 mapper for SDH systems

Author

Silveira, Reinaldo ; Van Noije, Wilhelmus A M

Author_Institution

Escola Politecnica, Sao Paulo Univ., Brazil

fYear

2000

fDate

2000

Firstpage

171

Lastpage

176

Abstract

The mapping problem of PDH signals into SDH systems is analyzed. Plesiochronous Digital Hierarchy (PDH) is a quasi-synchronous system used for multiplexing and transmission of voice(phone) and data, while Synchronous Digital Hierarchy (SDH) is a synchronous multiplexing system. Many differences beyond the synchronization make these standards difficult to integrate. We will present some of these problems and propose a method to help to understand and overcome such difficulties. An E1/TU12 mapper will be used as an example of the technique. The problem is analyzed by simulations using the object-oriented language Smalltalk (ST). ST was adopted because of its peculiar object model which makes development easy and fast

Keywords

Smalltalk; digital simulation; hardware description languages; synchronous digital hierarchy; E1/TU12 mapper; PDH signals; SDH systems; Smalltalk; mapping problem; multiplexing; object model; object-oriented language; plesiochronous digital hierarchy; quasi-synchronous system; synchronous digital hierarchy; Analytical models; Communication system control; Containers; Hardware; Object oriented modeling; Signal analysis; Signal mapping; Synchronous digital hierarchy; Time division multiplexing; Virtual colonoscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits and Systems Design, 2000. Proceedings. 13th Symposium on

Conference_Location

Manaus

Print_ISBN

0-7695-0843-X

Type

conf

DOI

10.1109/SBCCI.2000.876026

Filename

876026