點對多點廣播 的英文怎麼說

中文拼音 [diǎnduìduōdiǎnguǎngbō]
點對多點廣播 英文
point to multipoint multicast
  • 點 : Ⅰ名詞1 （液體的小滴） drop （of liquid） 2 （細小的痕跡） spot; dot; speck 3 （漢字的筆畫「、」）...
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 播 : 播名詞（姓氏） a surname
  1. In the leach - new protocol, the mainly improvement of the leach protocol exhibits as follow : for the sake of balancing the network load, the network choose the clusters based on the residual energy ; we take multi - hop communication between sensors instead of single - hop communication, which results in the reduction of energy consumption of clusters ; the new protocol finds the path to the cluster head with the minimum cost, using an algorithm similar to flooding to propagate the cost information and greedy algorithm to find the lowest cost link ; the algorithm for assigning tdma time slot reduces overall delays of network

    在leach - new協議中，對leach協議的改進主要體現在以下幾個方面:根據節點剩餘能量選擇簇頭，以平衡網路負載;節點間採用多跳路由，降低簇頭能量消耗;節點根據能量消耗的代價來選擇至簇頭的路由，通過擴散演算法來廣播代價消息，採用貪婪演算法來選擇能量消耗最小的路徑;採用tdma時隙分配演算法減少網路時延。最後，利用ns2模擬軟體進行驗證。
  2. On the internet, multimedia services such as streaming media, video / audio conference, voice over ip and video on demand, become more and more important, end - to - end data transmission or unicast ca n ' t be competent for the task which have the characteristic of one - to - many transmission. if we use unicast, the server has to offer the packet with same context for each connection, which will consume too much bandwidth. then the broadcast is alternative selection for us to deliver data in the lan, as we known, when broadcast technology used, all the pcs in the lan will receive the broadcast packets regardless that you would like to or not

    點對點傳輸的單播方式不能適應此業務的傳輸特性（單點發送多點接收） ，這使得服務器必須為每一個接收者提供一個相同內容的ip報文拷貝，並在網路上重復地傳輸相同內容的報文，這必然佔用大量網路資源。雖然ip廣播允許一個主機把一個1p報文發送給同一個網路的所有主機，但是由於不一定是所有的主機都需要這些報文，這又可能浪費大量網路資源。
  3. The model can simulate the transmission and receive of protocols data over the wireless broadcast of hf links, and verify the functions of some part protocols

    通過網路模型可以模擬多個節點在短波開放的無線廣播通道下協議數據的發送和接收處理，對網路協議功能進行驗證。
  4. As the step of the color tv ( the second generation ) to the digital tv ( the third generation ) is larger and larger, the research of digital television terrestrial broadcasting ( dttb ) become more and more important in china, we are concentrating on the standard of dttb which is suit for our country after describing and analyzing the technical stipulation and speciality of dttb, this paper compares atsc 8 - vsb with dvb - t cofdm and isdb - t bst - ofdmo the emphasis of this article lies in the technical solution about transferring system, channel coding is important component of dttb, which can resist from the bad circumstances o because of lots of varieties and different performance, channel coding become one of the emphasis of the research work this paper analyzes and researches the theory and performance of the different channel coding particularly, points out an effective theoretic analysis method and computer demo of performance comparison a theoretical method for estimating the performance of concatenated codes is proposed in this paperc this is achieved by combining the performance of single level coding rayleigh fading channel and the character of channel modulation it may be useful to research and development of the future digital television terrestrial broadcasting standard of our country

    通道糾錯編碼是數字電視地面廣播傳輸系統的重要組成部分，是抵禦地面惡劣環境的有效手段。由於通道編碼的種類繁多，性能各異，因此是目前研究工作的重點之一。本文詳細分析和研究了幾種通道糾錯編碼的原理和性能，並針對外碼內碼級聯糾錯結合地面通道瑞利衰落提出了一種有效的理論分析方法和性能的計算機比較演示方案，總結了不同級聯方案的性能特點，對於我國目前的數字電視地面廣播標準的研究和通道級聯糾錯方案的確立及其參數選擇具有一定的參考價值。
  5. The new equipments that mpeg2 technique release is since then, according to the mpeg2 technique continuously release, draw oned the profession s numerous vision of broadcast televisioned. also more and more become the focus in china, mpeg2, and see the factory to also fry the mpeg2 technique, many television station in the heat consider the oneself need to be used which mpeg2s product. for the sake of the angle that convenient for television station choose the equipments, we complete set out from the technique, objectively toward the development condition that everybody introduce the mpeg2 technique characteristics with now, the expectation have the help to everybody

    Mpeg2技術推出以來，基於mpeg2技術的新設備不斷推出，吸引了廣播電視行業的眾多目光。在中國， mpeg2也越來越成為焦點，視頻廠商也在熱炒mpeg2技術，許多電視臺正在思考自己需要使用哪些mpeg2產品。為了便於電視臺選擇設備，我們完全從技術的角度出發，客觀地向大家介紹mpeg2技術的特點和目前的發展狀況，期望對大家有所幫助。
  6. The aim of our study is to build a distributed vod system that can manage a large amount of programs and serve a great number of subscribers in a wide area. the article comprises two main ideas, as follow : this paper mainly describes system model of distributed structure, which the whole system is divided into two parts, program center and on - demand center

    本文針對在較廣地域內面向眾多區域網路部署vod系統的情況，提出了一種分散式層次結構的系統模型，將整個系統在組織上分為節目中心、點播中心兩大部分，與傳統視頻點播技術相比，點播服務被推向了網路末梢。
  7. Pipe connects a broadcast peer with multiple listeners

    管道連接廣播對等點與多個偵聽器。
  8. Multicast routing is a network - layer function that constructs paths along which data pachets from a source are distributed to reach many, but not all, destinations in a communication network, a fundamental issue in multicast communication is how to determine an efficient message route ( multicast routing )

    網路中的通信由單一的兩點間的通信向多點間的通信發展，因此對多播和群播（是多播的一種推廣）技術的研究也成為網路通信領域中的一個重要研究課題。多播是一個源節點將同一信息傳送到多個目的節點（但不是所有節點）的通信方式。
  9. For recent years, adsl has world widely employed and widely used in many aspects such as vod, remote medical treatment and e - shopping etc. but we noticed that the traditional telephone networks are designed for the transmission of low frequency signals, and the adsl ' s frequency rang is from 0 to 1. 104mhz, so we must confront the signal attenuation, the loop line noise impairments, the crosstalk interferences, the bridge tap reflections and the rf disturbances problems and many other problems when transmitting the adsl signals one the telephone networks

    近幾年來， adsl在世界范圍內得到充分的使用，廣泛應用於視頻點播、遠程醫療、網上購物等各個方面。但是由於電話線網路是專門為傳輸低頻信號而設計，而adsl的頻譜范圍在0 1 . 104mhz內，因此在傳輸adsl信號時，面臨著信號衰減、線路噪聲、串音干擾、橋接抽頭反射和射頻干擾等等多方面的問題，這就要求在adsl開通之前對線路進行一系列的測試。
  10. In epon, the typical network topology is point to multi - point. a downstream packet is broadcasted by olt to all onus. for upstream transmission, all onus share a single fiber, which is the key technology of epon

    Epon系統典型的拓撲結構是點對多點，下行是點到多點的廣播，而上行多點到點的通道復用是epon的關鍵技術。
  11. The downstream channel is a point - to - multipoint broadcasting channel with a wider bandwidth, while the upstream one is a multipoint - to - point share medium with a narrow bandwidth

    Hfc網路下行通道採用一點對多點的廣播方式，用戶共享下行資源實現比較簡單。上行通道是一個多點對一點的媒體共享通道。
  12. This paper is devoted to nonlinear approximation, namely, m - term approximtion of anisotropic smooth periodic functions. nonlinear approximation is the important part of approximation the - ory. it means that the approximants do not come from linear spaces but rather from nonlinear manifolds. the advantages of nonlinear approximation show that one can achieve a given accuracy of approximation while assuming less smoothness on the function in the nonlinear case than is necessary in the corresponding linear approximation. nonlinear approximation is used significantly in many applications, such as image processing, noise removal and the solution of operation equations and so on

    非線性逼近與線性逼近最大的區別在於所用的逼近子空間不是固定的，而是依賴于被逼近的函數其主要優點是對光滑度較低的函數仍可以得到較高的估計階。隨著小波和樣條的廣泛使用非線性（ m項）逼近成為較熱門的話題，它在圖象處理，聲的傳播，運算元方程的求解等方面都有很多應用。
  13. This paper comprehensively described the basic principles and charac teristics of bistatic ( multisstatic ) radar system via commercial television and fm radio signals, introduced the present situation of the research and developme nt ( r & d ) of new generation of this kind radar systems, presented our view on the r & d of this kind bistatic ( multistatic ) radar system

    闡述了利用電視、調頻廣播載波信號的雙（多）基地雷達系統的基本原理與特點，介紹了新一代基於商用電視、調頻廣播載波的雙（多）基地雷達系統的研製現狀，並提出了對發展這種雙（多）基地雷達系統的看法。
  14. Compared with analog power amplifier, digital amplifier has many advantages, such as hi - fi, high efficiency, good match between amplifier and loudhailer, easy update, convenient debugging and so on. and it can process not only digital audio signal but also analog signal. accordingly, it faces a vast market

    數字功放產品相對模擬功放有很多的優點:高效率、保真度較好、功放和揚聲器的匹配好、升級換代容易、生產調試方便等，且與未來的全數字式音頻廣播、高清晰度電視的發展趨勢相匹配。
  15. The company has a large resource of traditional and modern media, such as television, radio, newspapers, dm, network, a wealth of operational experience in the media, has a strong grasp of the market and planning capacity able to find the best selling points of enterprise and market a breakthrough after the new packaging and enterprises promotion to help enterprises remodeling market image, establish brand image

    本公司擁有眾多傳統和現代媒體資源，如電視、廣播、報紙、 dm 、網路等，擁有豐富的媒體運作經驗，擁有強大的市場把握和策劃能力，能為企業尋找到最佳賣點和市場的突破口，經過對企業的全新包裝和推廣，幫助企業重塑市場形象，樹立品牌形象。
  16. Point to multipoint multicast ptm - m

    點對多點通道廣播
  17. New algorithm and new structure have been developed to make the equalizer to get better performance on combating with seriously distorted channel fading : strong echo fading, large delay spread static and dynamic echo fading. main contents of this paper are as follow : in the first chapter, the history > present situation of the dtv system is presented. five dtv terrestrial broadcasting systems are introduced and two of them are compared, e. g

    本文主要內容如下：第一章概述了數字電視技術的發展歷史和目前的狀況，給出了目前已經成型的5種地面廣播標準；對兩種比較典型的傳輸標準： dvb - t和atsc作了性能對比分析，並將比較的焦點集中到對抗強多徑衰落和長時延的靜態和動態多徑衰落的性能上。
  18. The fact that traditional views are being interrogated is heartening, however, for it allows space for reinterpretations of such matters as risk management in agriculture via modern financial innovations such as futures markets, and techniques such as forward contracting, spreading sales, and hedging, techniques that over the past century - and - a half have spread to a wide range of commodities all over the world

    但傳統的觀點受到質疑這件事本身是令人鼓舞的，因為它允許我們通過現代的金融體制諸如期貨市場和現代的金融技術諸如意向契約、傳播銷售和套期保值來對農業的風險經營進行重新詮釋，而這些金融技術在過去的一個半世紀里已經在全世界深入到了許多商品的廣闊領域
  19. Although many observers - even in italy - questioned whether a penalty should have been given, huang jianxiang had no doubts and made this clear to chinese soccer fans watching the match on state tv

    雖然許多觀察員，甚至義大利本國的，都對是否應該判法點球產生了質疑，但是黃健翔非常肯定的說，點球應該被給予，他的話被清晰的傳播給了廣大坐在電視機前看球的球迷！
  20. 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。
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