新型机载高速数据通信系统设计

为了满足航空电子通信技术发展的需求,提出了基于FDDI标准的机载高速光纤通信网络体系结构,论述了该通信系统的总体设计思想和硬软件实现方案,最后简述机载高速数据通信系统的应用情况.     

FDDI及其网络规划设计

从参考模型等方面阐述了FDDI标准，讨论了FDDI的主要组网方式，并以实例阐述了网络的规划设计。     

基于FDDI的潜射导弹测控系统网络化研究

针对潜射导弹测控系统空间有限、电磁干扰强等问题,提出了基于FDDI的潜射导弹测控系统设计方案;系统由FDDI网络及PXI现场子系统组成,FDDI网络由光纤电缆、适配器、集中器和连接器组成,PXI现场子系统由PXI测试系统、测控计算机、转接箱和调理电路组成;文章设计的网络测试系统可以有效解决潜射导弹存在的电磁干扰强、空间有限等问题,并可实现并行测试,大大提高测试速度,提高导弹武器的作战反应速度。     

新一代车内通信系统的研究与实现

传统车内通信系统的数据传输带宽、实时性和数据接入功能的局限已不能满足新一代车内通信设备的需求.本文提出一种基于光纤分布式数据接口总线方式的车内通信系统的实现方法,并给出了系统实现方案和测试数据.该系统的数据传输带宽、实时性和设备数据接人能力均能满足新一代车内各类通信设备的接入要求,且该方案已经产品化,实践应用证明该方案可行.     

FDDI通信接口关键电路的设计

高速分布式光纤网络将进入航空通信领域,本文介绍了适合机载实时容错分布式通信系统的FDDI通信接口的功能与组成,重点说明了该接口硬件关键电路的设计思想和方案。     

贵冶控制网主干改造

本文简要介绍了贵冶控制网及控制网改造的原则,并对网络改造后采取的提高网络可靠性的方法进行了说明。     

FDDI网络适配器ODI驱动程序的原理与实现

本文首先简要介绍了开放数据链路接口ＯＤＩ的结构模型和基本原理，并在此 论述了Ｎｏｖｅｌｌ网中ＦＤＤＩ网络适配器ＯＤＩ驱动程序的实现技术。     

Testing the Schedulability of Synchronous Traffic for the Timed Token Medium Access Control Protocol

One of the key issues related to guaranteeing synchronous message deadlines in a timed token network (such as fiber distributed data interface) where the timed token medium access control protocol is used is the schedulability test of synchronous traffic (i.e., testing whether or not all synchronous messages can be transmitted before their deadlines, under a given setting of network parameters). Much work has been done on how to assign network parameters appropriately in order to guarantee timely transmission of synchronous traffic. As a result quite a few synchronous bandwidth allocation schemes and some good guidelines on selection of the target token rotation time have been proposed. In contrast, limited research has been conducted on how to effectively test whether or not given network parameters can guarantee timely transmission of all synchronous messages (of a considered synchronous message set) before their deadlines. The previous testing methods for synchronous message schedulability only provide a sufficient (but not necessary) test and therefore fail to always keep effective for any synchronous message set considered. In this paper, we propose two testing methods for determining the schedulability of a synchronous message set with message deadlines no longer than periods. The proposed tests perform better than any previous test in the sense that they are both sufficient and necessary. Some numerical examples are given to compare different testing methods, all of which have demonstrated the superiority of the proposed tests to other existing testing methods.     

网络技术对计算机组网的影响

从社会需求与技术发展的相关系统出发，阐述了计算机网络技术的发展现状及其对计算机用户组网的选择和影响。