The Mapping Design for 2.048 Mbit/s Tributary  Asynchronous Mapping into SDH VC  12

Xu Yongming\ \ Zhang Xiaopin

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The Mapping Design for 2.048 Mbit/s Tributary Asynchronous Mapping into SDH VC 12

- The Mapping Design for 2.048 Mbit/s Tributary Asynchronous Mapping into SDH VC 12
- Study on Optical communication Issue 2, (1996)
- 作者机构：
  
  1. 北京邮电大学光通信教研室
  2. 北京邮电大学光通信研究室
  3. 北京邮电大学光通信教研室北京邮电大学光通信研究室
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN913.24
- Published：1996，
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[1]徐永明,张晓频.2．048Mbit／s异步映射入SDHVC－12的映射设计[J].光通信研究,1996(02):21-27.

Xu Yongming\ \ Zhang Xiaopin. The Mapping Design for 2.048 Mbit/s Tributary Asynchronous Mapping into SDH VC 12. [J]. (2).(1996)
[1]徐永明,张晓频.2．048Mbit／s异步映射入SDHVC－12的映射设计[J].光通信研究,1996(02):21-27. DOI：

Xu Yongming\ \ Zhang Xiaopin. The Mapping Design for 2.048 Mbit/s Tributary Asynchronous Mapping into SDH VC 12. [J]. (2).(1996) DOI：

摘要

对ＳＤＨ体系中的２．０４８Ｍｂｉｔ／ｓ支路信号异步映射进ＶＣ－１２的具体过程进行了分析。主要进行了正／零／负码速调整的参数设计，包括通过读写时差的变化来确定缓冲存储容量和上、下门限；并给出了码速调整，以及Ｃ－１２映射入ＶＣ－１２形成５００μｓＶＣ－１２复帧的电路原理框图

Abstract

In this paper

we analyzed the asynchronous mapping of 2.048 Mbit/s tributary into SDH VC 12 and showed the major function blocks.It include two parts:positive/zero/negative justification and 500 μs VC 12 multiframe generator.We mainly analyzed the features of adapting PDH 2.048 Mbit/s tributary into SDH C 12 by using positive/zero/negative justification.We got relative optimized parameter: the capacity of elastic store

up threshold

and dowm theshold.At the same time

we designed a coder to get the time sequences we need to structure 500 μs VC 12 multiframe.

关键词

光同步数字传输网映射码速调整

Keywords

SDH\ mapping\ justification

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