Developing the theory for the design and implementation of secured computer communication systems 研發(fā)更安全的電腦傳播系統(tǒng)設計和推行理論
Abstract : the application process of computer communication system network in metrology management and its practical significance are introduced 文摘:介紹了計算機通訊聯(lián)網(wǎng)在計量應用管理工作中的應用過程以及使用它的現(xiàn)實意義。
The network media is based on computer communications system , but the hardware , software , and communications system are not secure enough , at the same time , the user are lacking in security ideas and technology that can be used . what ' s more , the laws and regulations are relatively lagging behind 網(wǎng)絡媒體是以計算機通信網(wǎng)絡為基礎的,由于計算機通信網(wǎng)絡是以計算機和數(shù)據(jù)通信網(wǎng)絡為基礎的應用管理系統(tǒng),因而它是一個開放式的互聯(lián)網(wǎng)絡系統(tǒng)。
Considering the requirement of communication network , a local area computer communication system of plc based on usb interface was given after analyzing the application model of plc . then after theoretical analysis and digital simulation , the plc modem and the computer interface models were designed . the design of software about the two models was also finished 本文首先介紹了電力線通信技術在國內(nèi)外的研究概況,分析了電力線載波信道的傳輸特性,討論了適合于電力線通信的擴頻載波通信方式,然后結(jié)合通信網(wǎng)絡的要求,在分析電力線通信應用模式的基礎上,提出了一種基于usb接口的室內(nèi)計算機電力線通信方案,進行了理論上的分析和數(shù)字仿真,設計了電力線modem模塊和計算機接口模塊,編制了相應的軟件程序,并對軟件進行了測試分析。
Optical code multiple access ( ocdma ) communication system is a spectral spreading system . all users in the system share all the bandwidth in the same time . because of the using of the almost infinitude bandwidth in the fiber , ocdma system will become more and more important in future ultra - high speed lan and online computer communication system 光碼分多址( ocdma )通信系統(tǒng),作為一種擴展頻譜系統(tǒng),用戶同時共享所有帶寬,因為可以充分利用光纖中的巨大帶寬資源,因此在未來超高速局域網(wǎng)和實時計算機通信系統(tǒng)中將扮演重要角色。