光ATM交换系统与SDH传输网的线路接口  

Line Interface between Optical ATM Switch System and SDH Networks

作　　者：曹安萍[1] 曹明翠[1] 罗志祥 李源[1] 

机构地区：[1]华中理工大学激光技术国家重点实验室

出　　处：《华中理工大学学报》1999年第7期86-88,共3页Journal of Huazhong University of Science and Technology

摘　　要：研究了基于自由空间光交换技术的宽带光ＡＴＭ交换系统，该系统与ＳＤＨ传输网的线路接口对６２２Ｍｂｉｔ／ｓ的高速信号进行处理，完成多种功能．对该接口功能进行了分析，解决了同步时钟恢复和信头处理问题．Based on free space optical interconnection technology, a broadband optical ATM switch system is introduced. Its line interface (LI) to SDH networks can fulfill most functions of PL and ATM layer. A digital Phased Locked Loop (PLL) controlled by a single chip microcomputer is designed to recover timing signal from SDH links in order that the switch can receive and route data correctly. Being ideally suitable for building reconfiguratable hardware system, Field Programmable Gate Array (FPGA) chips are used to carry out the LI. Pipeline technique helps to handle timing problems in header processing FPGA chip.

关 键 词：异步转移模式 光交换系统 线路接口 SDH传输网 

分 类 号：TN913.24[电子电信—通信与信息系统]