頻分多路傳輸 的英文怎麼說

中文拼音 [bīnfēnduōlùzhuànshū]
頻分多路傳輸 英文
fdm
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 路 : 1 （道路） road; way; path 2 （路程） journey; distance 3 （途徑; 門路） way; means 4 （條理） se...
  • 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
  • 輸 : Ⅰ動詞1 （運輸; 運送） transport; convey 2 [書面語] （捐獻） contribute money; donate 3 （失敗） l...
  1. In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab

    針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。
  2. Orthogonal frequency division multiplexing ( ofdm ) is a special case of multicarrier transmission, in which a single high data rate datastream is transmitted using a number of lower data rate subcarriers

    Ofdm （正交頻分多路復用）是一種特殊的多載波傳輸方式，由於它使用一系列低速子載波并行傳輸數據，使得傳輸速率得到大幅度提高。
  3. Orthogonal frequency division multiplexing ( ofdm ) is a special case of multicarrier transmission, in which a single high rate datastream is transmitted using a number of lower data rate subcarriers

    Ofdm （ orthogonalfrequencydivisionmultiplexing正交頻分多路復用）是一種特殊的多載波傳輸方式，由於它使用一系列低速子載波并行傳輸數據，使得傳輸速率得到大幅度提高。
  4. And pays emphasis on analyzing the system structure and system flow, the core techniques, the channel characteristic and parameters of dvb - t system. the system adopts some core techniques such as cofdm, a lot of tps ( transmission parameter signalling ) insert and guard interval, and so on. so it can withstand high - level ( up to odb ), long delay static and dynamic multipath distortion

    論文首先描述了數字電視地面廣播的需求條件，技術難點和目前存在的問題，並重點分析了dvb - t系統結構流程，核心技術及系統通道特性和參數，該系統採用了cofdm （編碼正交頻分多路復用） ，大量導頻信號插入和保護間隔技術等核心技術，使之能抵抗高電平（ 0db ） ，長延時的靜態和動態多徑失真，有利於數字和模擬電視的混合傳輸，它的多載波調制模式功能和性能在移動和便攜接收、同頻網等方面具有獨特的優勢。
  5. People can get almost information through the internet. this gives rise to serious problems including wide spread copyright violation, illegal copying, easy forging etc. these problems are rooted from the intrinsic features of the digitally formatted information : ( 1 ) making copies is easy and inexpensive ; ( 2 ) each copy is exactly identical to the original ; and ( 3 ) distribution of the copies ( e. g. via network or floppy ) is easy and fast

    多媒體數據的數字化為多媒體信息的存取提供了極大的方便，同時也極大地提高了信息表達的效率和準確性，如數字信號很容易進行編輯，可以方便、便宜、無失真地被復制，數字聲音、文本、圖像和視頻易於通過電子的（網路）或物理的（ cd - rom ）系統低價高效地迅速傳輸和分配等。
  6. Telemedicine includes many medical subspecialties, of which teleconsultation is the most important part. the key technology on how to achieve real - time audio & video transfer through internet is regarded as one of the important fields in the development of internet media

    遠程會診是遠程醫學中最重要的一部分，遠程會診中的最關鍵技術? ?如何在internet上傳輸實時音視頻流也是未來網路多媒體的一個重要研究方向。
  7. The image ( video ) transmission system is widely used in some cases such as surveillance, internal telephone system, image collection, video conference and so on

    圖像（視頻）傳輸系統目前在多種場合得到廣泛的應用，例如視頻閉路監控、可視電話、圖像採集分析、會議電視等。
  8. It satisfy the consumer ' s mutlimedia application based on web like : video order prog, long - distance education electroncial commence etc. the essay comprises six parts, the first section introduces the utilization and development of the multi - media, regarding the current situatuion of our country ' s on - line education, points out the definite trend of the multi - media data transmission, the second part describes the basic protocol, technology and theory of multi - media data transmission, the third part gives brief introduction to the principles and compression methods of the dealing with multi - media data, the fourth section devises and realizes a complete set of stremline media server, the fifth part discusses qos under the condition of internet, the sixth part looks forward to the development of the streamline media technology

    本文介紹了多媒體數據傳輸的基礎知識，結合科通教學平臺的開發，實現了局域網環境下的多媒體課件的傳輸，並對該系統的進一步改進提出架構流媒體服務器的方案，將用於滿足用戶需要更多基於網路的多媒體應用，如視頻點播、遠程教育、電子商務等。本論文分為七個部分。第一部分介紹了多媒體技術的應用與發展，針對我國網路教學的現狀，指出多媒體數據傳輸的必然趨勢。
  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. Methods of measurement for radio equipment used in satellite earth stations - part 3 : methods of measurement for combinations of sub - systems - section three - measurements for f. d. m. transmission

    衛星通信地球站無線電設備測量方法第3部分:分系統組合測量第3節:頻分多路復用傳輸的測量
  11. Methods of measurement for radio equipment used in satellite earth stations ; part 3 : methods of measurement on combinations of sub - systems ; section 4 : measurements for frequency division multiplex transmission

    衛星地面站用無線電設備的測量方法.第3部分:分系統組合件的測量方法.第4節:分頻多路傳輸
  12. Methods of measurement for radio equipment used in satellite earth stations. part 3 : methods of measurement on combinations of sub - systems. section four : measurements for frequency division multiplex f. d. m. transmission

    衛星地面站用無線電設備的測量方法.第3部分:分系統組合件的測量方法.第4節:分頻多路傳輸測量
  13. The technology of direct sequence spread spectrum / code division multipul access ( dsss / cdma ) are applied in the broadband code division multiplex wireless communication systems, which means transmitting data at the rate of 2. 048mbps using four e1 lines within the band of 20mhz. in this paper, the theory of the whole debice is first analysized specified for the system asic design and optimizing its performance

    寬帶碼分復用無線傳輸系統是採用直接序列擴頻/碼分多址（ dsss / cdma ）技術，在20mhz頻帶內實現四路2 . 048mbps的e1鏈路數據速率的無線傳輸。本文首先分析了整個數傳設備實現原理，針對系統asic設計和優化整機集成性能出發，提出並實現了基於fpga控制pm4314e1晶元的介面模塊完成對e1鏈路信號的監控和告警功能的改進方案。
  14. At first the article puts emphasis on analyzing those current network ip technology, various audio codec algorithms, realtime stream medium transmit technology and those process mechanism of realtime low bandwidth audio stream medium, etc. in allusion to high requirement of system, resulted from so many terminations of attending a lecture, rate of flow, bad situation of network and realtime interactive voice, a new algorithm and the relevant project of processing low bit - rate audio stream was brought forward

    本文著重分析了當前網路方面的ip技術，各種音頻編碼演算法，實時流媒體傳輸技術，實時低帶寬音頻流媒體的處理機制等等。針對網路實時應用中諸如客戶端眾多，各種多媒體數據流量大，網路狀況差，語音交互實時性等方面較高的要求，提出一種新的實時低帶寬音頻流處理演算法及相應的處理方案。
  15. Adsl transmission equipment vendors use either frequency division multiplexing or echo cancellation to achieve this huge gain in throughput

    Adsl傳輸設備供應商不是利用頻分多路復用，就是利用回波消除，以獲得吞吐量有大幅度的提高。
  16. At the beginning, this paper has some brief dissertation on the basic principle of the dsl and the multimedia data compression, the key technique of sdsl, the transport protocols, and the data transfer system structure based on the twisted - pair. then it gives an analysis of the point - to - point data link protocol ( ppp ) and the real - time transmission protocol in detail, which provide the side - to - side transmission service for audio frequency and video frequency data, and so on based on the these, we developed a multimedia sdsl modem system used to transfer data and phonetic

    本文首先對dsl系統和多媒體數據壓縮技術的基本原理、 sdsl的關鍵技術、傳輸協議以及基於雙絞線的數據傳輸系統的結構進行了簡要的論述，並詳細分析了點到點的數據鏈路協議（ ppp協議）以及實時傳輸協議，其為音頻、視頻等實時數據提供端到端的傳送服務。可以向接收端傳送恢復實時信號必需的定時和順序信息，並向收發雙方和網路運營者提供qos監測手段。
  17. There are a lot of signals transmitted in the optic fiber communication system, such as : video, audio, data, telephone or other user - defined signals. if one fiber transmites one signal, it will take a lot of money. it is necessary to take multiplexing in order to make use of optic fiber effectively and reduce the cost

    在光纖通信系統中要傳輸的信號有許多種，如視頻圖象、音頻、數據、電話或其他用戶自定義的信號，每種信號分別用一條光纖線路來傳輸，必然價格昂貴，所以為了提高光纖的利用率，降低成本，必須將各種信號進行復用。
  18. Methods of measurement for radio equipment used in satellite earth stations - methods of measurement on combinations of sub - systems - measurements for frequency division multiplex f. d. m. transmission

    衛星地面站用無線電設備測量方法.第3部分:分系統組合件測量方法.第4節:分頻多路傳輸測量
  19. Use of one channel for several messages by timedivision multiplex or frequency division

    通過時分或頻分多路復用的方法，用單個通道傳輸多個報文。
  20. In next mobile communication system to suffice more and more high - speed data service and demand of qos ( quality of service ) many new wireless link layer transport technologies are going to be used such as mimo ( multiple input multiple output ), ofdm ( orthogonal frequency division multiplexing ), channel coding and acm ( adaptive coding modulation ) etc. low density parity check ( ldpc ) codes were first discovered in 1960 ’ s which belong to linear block codes with their parity matrix being sparse

    下一代移動通信系統為了滿足移動用戶對高速、寬帶數據傳輸業務不斷增長和更高服務質量的要求，採用了許多新的無線鏈路傳輸技術，包括多天線發射和接收技術、正交頻分復用技術、通道糾錯編碼技術和自適應編碼調制技術等。上世紀60年代提出的低密度校驗碼，是一種校驗矩陣為稀疏矩陣的線性分組碼。
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