信源 的英文怎麼說
中文拼音 [xìnyuán]
信源
英文
informatio ource- 源 : 名詞1. (水流起頭的地方) source (of a river); fountainhead 2. (來源) source; cause 3. (姓氏) a surname
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Public key cryptography, combined with the traditional symmetric cryptograph and the message digest technology, can provide confidentiality, integrity and proof of origin. it ' s the foundation of many secure applications
公鑰密碼技術結合傳統的對稱密碼技術及信息摘要技術,可提供信息的保密性、完整性和信源確認,是多種安全應用的基礎。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。In this case the information source provides an electrical signal to a transmitter comprising an electrical stage which drives an optical source to give modulation of the lightwave carrier
在這種情況下,信源給發射機提供一個電信號,發射機中的電路驅動光源以實現對光載波的調制。Slotted random access channel based on multimedia packet
多媒體信源時隙式隨機多址系統研究Running user code from an untrustworthy source could compromise the information on the computer
運行來自不可信源的用戶代碼可能危及計算機上的信息。Meanwhile, in consideration of the self - similar nature of traffic in communication networks, the queueing system of an on / off traffic source with heavy - tailed distribution is discussed, because the aggregating traffic of a mass of such traffic sources exhibits self - similarity. the main research works and results are listed as follows
同時,考慮到網路業務具有自相似性,而且大量具有「重尾」特性的信源產生的業務疊加后可以生成自相似業務,本文對這類信源的排隊系統進行了探討。Simulations for high speed atm network and low speed atm network show the proposed algorithm can reduce cell loss rate and depress the fluctuation of the cell transmission rate
對低速網路和高速網路的模擬表明了erica改進演算法大大地減少了信元損失率,降低了信源速率調整的波動。In the proposed method, the controller takes the buffer length as congestion indication, takes sources quality and bandwidth utility as object function so as to learn on line. as the controller outputs, the coding rate for input traffic sources and the corresponding user percentage are used to adjust the cells " arrival rate to the multiplexer buffer. compared with the previous method where cells " arrival rate is tuned only by the encoding rate and the encoding rates for all input traffic sources are regulated in a body, the proposed method guarantee that the quality of cells are optimal while cell loss rate is minimized, which means quality of service is guaranteed
在該方法中,擁塞控制器以緩沖區大小信元作為擁塞指示,以信源質量和帶寬利用率作為目標函數進行在線學習,控制器輸出包括信源編碼率及其對應的用戶數在全部用戶中所佔的百分比,即根據信源編碼率及對應的用戶百分數調整信源輸入流,從而克服了以往擁塞控制方法中僅僅調整編碼率帶來的對所有信源進行整體調整的缺陷,使控制系統在信元損失率最小情況下確保信源輸入流質量最高,從而有效地利用了網路帶寬。In this dissertation the ts demultiplex task and ac - 3 decoding task in mpeg - 2 protocol are scheduled by 2 policies. one is the buffer - drive policy and the other is deadline - drive policy. some experiments have been done to confirm the policy and the arguments of the scheduling
本文根據hdtv信源集成解碼晶元的工作原理,對mpeg - 2協議中的ts流解復用任務和ac - 3音頻解碼任務提出緩存驅動和時限驅動兩種調度策略。Dvb / mpeg - 2 transport stream multiplexer / demultiplex takes an important role in digital video broadcasting system. it can combine several transport streams from source encoder into a single transport stream to transport channel, or demultiplex trasnsport stream into one program sorce to source decoder. its performance has a great influence on the program transmission ability of hdtv system and the decoding quality of decoder in hdtv receiver. mpeg - 2 system multiplexer signalized video, audio, host data and so on to fixed length packet type for making transport stream
Dvb mpeg - 2傳送流復用解復用是數字電視廣播系統中的重要組成部分之一,它將從信源編碼器輸出的多路節目源復用成一路傳輸流送入傳輸通道,或者從通道中包含多路節目源的一路傳輸流中解復用出一路節目送到解碼器解碼。A novel joint estimation algorithm for ranges, frequencies and doas of multiple near - field narrowband sources is proposed in the near field is proposed
摘要提出了一種新的多個近場窄帶信源距離、頻率及到達角三維參數的聯合估計演算法。Success originates from confidence, which then from quality ; fame originates from expertness, which then from strength
成功源於自信,自信源於品質;馳名源於專業,專業源於實力。The paper gives a survey on three approaches of statistical machine translation and the evaluation methods used in smt, the basic idea of parallel grammar based approach is to build parallel grammars for source and target languages, which conform the same probabilistic distribution
摘要本文綜述了基於信源通道思想和基於最大熵思想的統計機器翻譯方法並介紹了統計機器翻譯的評測方法。Publicity is information from an outside source that is used by the media because the information has news value
(新聞)宣傳是媒體採用的來自外部信源的信息,因為這些信息有新聞價值。We researched the subspace eigenvalue decomposition and weighted subspace fitting techniques in the beamspace
在波束空間內,研究了相干信源子空間分解技術和加權子空間擬合技術。The computer simulations indicated that the weighted subspace fitting technique in the beamspace possessed a significant advance of 2 - d estimation for coherent sources
計算機模擬表明,在波束空間內的加權子空間擬合技術具有良好的相干信源二維波達方向估計性能。The rate - distortion function, and source coding theorem
率失真函數和信源編碼定理。The channel coding theorem, the source coding theorem
通道編碼理論和信源編碼理論。Source encoding and channel coding
信源編碼與通道編碼Study on the method to increase in the abilityof source coding to channel errors
提高信源編碼抗通道誤碼能力的方法研究分享友人