點到點通信 的英文怎麼說
中文拼音 [diǎndàodiǎntōngxìn]
點到點通信
英文
point to point circuit-
Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground
針對存在的缺點,本文提出了一種應用於激光多普勒測速的高精度信號處理技術,即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜,搜索其譜峰值頻率,接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析,再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析,從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來,充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率,通過goertzel演算法獲得分析頻帶的高解析度頻譜,然後通過能量重心校正演算法對細化后的頻譜進行高精度校正,這樣不僅保證了演算法的高效性,而且大大提高了分析的精度。An attacking node can personate other nodes through replaying their binding messages, changing the address field to provide wrong return address, and achieving dos ( denial of service ) attack by replaying binding messages
攻擊節點可以通過重放節點綁定信息的形式來冒充此節點;通過修改綁定消息中的地址部分來提供虛假地址;還可以通過大量重放監聽到的綁定消息進行拒絕服務攻擊。It preestablish a parallel design pattern for each parallel project based on master / slave architecture, and the communication between computers is transparent to programmers. in another words, when programmers are developing parallel programs, they do n ' t need to learn any complicated primitives and write any codes related with communication between parallel tasks. just only set some parameters in the visual interfaces that provided by platform, and the codes will be generated by our system automatically and inserted to the fittest place in the files
系統為每一個并行計算工程設定了一個基於master slave架構的并行編程模型,並且使得各結點機之間的通信對于開發人員透明化,也就是說,開發人員在開發并行程序時,無需了解紛繁復雜的通信原語,不涉及任務之間通信的代碼,只需要在并行程序開發平臺提供的可視化界面上對數據的傳送進行設定,通信代碼將自動生成並插入到程序合適的地方。Some applications, such as network conferencing, distributed database exploitation, require simultaneously transmitting data to multipoint from one point. multicast is becoming a key requirement of network supporting multimedia applications. it appears at the telophase in 1980, turns into a international frontier and has already become a hostpot in this field
某些特殊的應用,如網路會議、分散式數據庫開發等,都是需要把數據從一點同時發送到多點的問題,多點通信(組播)即multicast是網路支持多媒體業務的關鍵技術之一,產生於20世紀80年代末,已經迅速發展為一個國際前沿領域,成為研究的一個熱點。Compared with traditional education modes and the common remote education modes, it enjoys an unexampled excellence. its most prominent advantage is being economical, for online education can sufficiently reuse the existing computer network, thus, saving much investment in basic establishment
網路教育相對于傳統教育有著無法比擬的優點,而相對于其他遠程教育方式,它最大的優點就是可以利用現成的網路通信條件,不用投入大量資金到基礎網路建設上。Wlan service is welcomed in the universiade and is called as " the bright focus of the communication technique in the universiade ". many conventional and internet media gave special reports on it
Wlan業務在大運會上受到使用者的歡迎,被中新社記者稱為"此次大運會通信技術的閃亮焦點" ,多家傳統媒體和網路媒體對此進行了專門報道。To improve the accuracy of node trust evaluation in a distributed network, a trust model based on the experience of individuals is proposed, which establishes a new trust assessment system by introducing the experience factor and the comparative experience factor. the new evaluation system considers the differences between individuals and interactive histories between nodes, which solves the problem that nodes have inaccurate assessments due to the asymmetry of nodes to a certain extent. the algorithm analysis indicates that the new model uses different deviating values of tolerance evaluation for different individuals and uses different updating values embodying node individuation when updating feedback credibility of individuals, which evaluates the trust value more reasonably and more accurately. in addition, the proposed algorithm can be used in various trust models and has a good scalability
為了提高分散式網路中各節點信任評價的準確度,提出了一種基於個體經驗的信任模型.該模型通過引入經驗因子和相對經驗因子的方法,建立了新的信任評價體系.這種新的信任評價體系考慮了個體節點的差異問題,在計算節點的信任值時考慮了節點間的交互歷史,這在一定程度上解決了由於節點的非對稱性而導致的信任評價不準確的問題.演算法分析表明:新模型能夠針對不同的個體節點,採用不同的最大容忍評價偏差,並且對個體節點的反饋可信度進行更新時,採用不同的更新值,體現了節點的個性化特徵,使信任評價更加準確合理.此外,所提出的新演算法能夠運用到多種信任模型中,具有很好的可擴展性Therefore, it is really necessary to improve the anti - jamming ability of cmts ( cable modem termination system ) based on current docsis protocol. this paper firstly investigates the topology, architecture, key devices and channel features of hfc network, then points out its inherent disadvantages of this kind of topology
本論文首先對hfc網的拓撲結構、體系結構、關鍵設備、通道特點等方面進行了充分的研究,指出這種網路拓撲結構固有的缺點,那就是上行是多點到一點的信號匯聚。Network nodes are divided into clusters in geocrp, sensor nodes send data to their cluster heads and these data are transferred between cluster heads until they reach the sink node, such a hierarchical network structure can increase scalability of the network
Geocrp將網路中的節點劃分成簇,感知節點採集的數據首先傳送到其所在簇的簇頭,再通過簇頭之間的通信進行簇間中繼,直到到達匯聚節點。When you connect to your isp ( internet service provider ) through a modem, you establish a switched connection to the isp, but it ' s actually carrying packets through a protocol called ppp or ( rarely now ) slip ( serial line internet protocol )
當你通過數據機連接到網路服務商時,你就和它建立一個交換連接,但實際上是通過稱為點到點的協議或串列線路介面協議(現在很少使用)傳送信息包的。However, while bringing us a lot of benefits, it raises requirements for network interworking. as is shown in figures 1 and 2, if the order of the 2 mbits time slots is inconsistent on the 155 mbits paths, disorder will take place when these paths are interconnected, thus making impossible the functioning of the point - to - point 2 mbits links. hence the unification of the arrangement of the time slots of 155 mbits signals throughout the network
正像圖1 、圖2中所示開通交換機中繼電路的情況,如圖中155mbits通路2mbits時隙排列不統一,在互連時就會造成2mbits時隙混亂,難以開通點到點2mbits鏈路,因此全網155mbits信號時隙必須統一排列規則,才能保證業務的順利開通,方便網路的維護。The mobile communication technology progress has provided the new way for the enterprise information to be transmitted fastly and accuratly. therefore, this article based on the above viewpoint, the paper carry on the conformity with each kind of information system of the enterprise, by using communication timeliness and the mobility, establishes a real - time highly effective, safe, stable, product management system information platform which taking enterprise ' s product as the basic point and the product in the sale also is the supplier and the seller intermediary spot characteristic, through analysis each function of the system skeleton as well as research each function flow, the information determination and the grouping, the data warehouse definition and the optimization, might using migration such as cell phone, computer and so on. to complete the data exchange of the enterprise internal and external forms product information by computer, achieved the goal of promoting the enterprise internal and external forms information transmission, exchange and communication
因此,本文基於上述的觀點利用通信技術的實時性和移動性,與企業各種信息系統進行整合,建立一個實時高效、安全、穩定的企業產品管理系統信息平臺構架,以企業的產品為基點和產品同時在銷售中又是供應商和銷售商的中介點的特點,通過對系統構架各項功能的分析以及各項功能在模塊中實現的流程、信息的確定與分組、數據倉庫的定義和優化等作了理論的研究,可以利用手機等移動便攜工具、計算機完成進行企業內外部產品信息的數據交流,達到促進了企業內外部信息的及時傳遞、交流和溝通的目的。A nice feature of cosmos is that it uses an ipsec tunnel to create secure end - to - end communication between the cluster nodes
Cosmos的一個非常好的特性是,它使用ipsec隧道來在集群節點間創建安全的端到端通信。There are many fields in sip ' s research now. in this thesis, we focus on the sip ' s application on end to end communication in nat and firewall entironments
目前針對sip及相關應用的研究領域比較多,本文的焦點是針對sip的特點,研究在nat及防火墻環境下,基於sip的端到端通信的實現。In gsm network, point - to - point short message service supports message transmission without traffic channel ( tch ) for mobile subscribers
在gsm網路中,點到點簡訊服務( sms )支持移動用戶不通過話音傳輸就能進行信息傳遞。The basic esb pattern abstracts application components into a set of services that interact through a bus rather than through direct, point - to - point communications
基本esb模式將應用程序組件抽象為一個服務集,這些服務通過總線進行交互(而不是通過直接的點到點通信交互) 。Network information theory, although still partial, generalizes shannon ' s classic information theory and offers strong potential gains over conventional point - to - point communication techniques
盡管網路信息論還不完整,但它能概括香農的經典信息論,並為傳統的點到點通信技術提供強大的潛在增益。The traditional unicast and broadcast ca n ' t meet the demand of point to multi - points communication for cooperative design, ip multicast is the novel transport protocol to solve this question. it permits that a source in the network once delivers a packet to an arbitrary number of receivers. so it can retrench the network resources and enhance the transmission efficiency
傳統的點到點通信和廣播通信不能適應協同設計中這種點到多點的通信需求, ip多播正是針對此類問題提出的一種新型網路傳輸方案,它允許一個ip節點將一個報文一次發送給網路上的一組特定節點,可以節省網路資源,有效提高網路傳輸效率。At the same time, the dns keeps communication with all the cdn control nodes throughout the world to collect information about the health status of each node so that the user request will not be distributed to any useless node
同時,它還與分佈在世界各地的所有cdnc ( cdncontrol )節點保持通信,搜集各節點的健康狀態,確保不將用戶的請求分配到任何一個已經不可用的節點上。As a good solution to this problem, software radio ( sr ) has became the focus of research. software radio makes the communication system break away from application - oriented design method. therefore sr has been recognized as the next major leap forward in wireless communication
而軟體無線電( softwareradio , sr )的提出,為解決這一問題提供了新的思路, sr也因此成為研究的焦點,它使通信系統擺脫了面向應用的設計思想,被認為是無線通信從模擬到數字,從固定到移動之後的又一次突破。分享友人