This paper originated from the high - tech project of jiangsu province and its code is bg2001046 . the paper bring forward the functional block schematic of realizing the whole ont in apon based on the network model of b - isdn and the specification of tc - - itu - t g . 983 . 1 and the paper make a decision on how to realizing every part of the ont according to the specific conditions . finally the paper put forward the whole realizing scheme which is fulfilling the tc layer with fpga - atm layer with a chip of firestream ? 55g and system bus between the aal layer and the application service with dsp and with dsp , meanwhile finished the demonstrating and designing . besides , in order to test the function of the whole ont 文中在讨论宽带综合业务数据网( b - isdn )网络分层模型和itu - tg . 983 . 1关于tc层协议的基础上,提出了实现apon系统中ont的整体功能模块图,并根据具体情况细化了各个大功能模块的技术实现方法,确立了利用现场可编程门阵列( fpga )技术完成ont的传输会聚( tc )层功能、选用firestream ~ ( tm ) 155g芯片完成atm层和aal层功能以及利用数字信号处理( dsp )技术实现高层业务接口开发的ont整体实现方案,并完成了物理介层的方案论证与设计。
With the development of isdn , communication transmission with large capacity and multielement makes much more demands on optical communication system . as a result , wavelength division multiplexing ( wdm ) technology by which light with multiwavelength can propagate through single optical fibre is given more and more attention 随着综合业务数据网( isdn )的发展,大容量、多元化的通信传输对光通信系统提出了越来越高的要求,使用一根光纤传输多个频率光信号的光波分复用技术广受关注。
业务: vocational work; professiona ...数据: data; record; information网: net综合业务数据网: integrated services degital network; integrated services digital network (isdn); isdn integrated service digital network宽带综合业务数据网: b-isdn broadband-isdn; b-isdnbroadband-isdn; broadband isdn窄带综合业务数据网: n-isdn narrow band-isdn; no naow band-isdn; no narrow band-isdn业务数据: business data业务数据点: service data point sdp业务数据库: service database业务数据单元: sdu service data unit; service data unit sdu业务数据功能: service data function sdf业务数据管理: service data management sdm业务数据模板: service data template业务数据目录: bdc业务数据清除: transaction clear数据网络业务: dns data network service业务数据功能,服务数据功能: service data function (sdf)宽带综合服务数据网: b-isdn broadband integrated service data network; b-isdn broadband integrated service data network传送业务数据单元: tsdu transport service data unit等时业务数据单元: isochronous service data unit分组业务数据信道: packet data traffic channel pdtch核心业务数据单元: csdu core service data unit会晤业务数据单元: ssdu session service data unit子网业务数据单元: snsdu subnetwork service data unit管理数据网络业务: managed data network services