forward error correction 中文意思是什麼

forward error correction 解釋
前向糾錯前向糾錯方式
  • forward : adv 1 向前，前進 （opp backward）。2 【航海】在船頭，向船頭（opp aft）。3 今後，將來。4 出來，出...
  • error : n. 1. 錯誤；失錯。2. 謬見，誤想；誤信；誤解。3. 罪過。4. 【數學】誤差；【法律】誤審，違法；（棒球中的）錯打。adj. -less 無錯誤的，正確的。
  • correction : n 修正，改正；校正；矯正；〈古語〉懲罰；勘誤表，補正。 a copy disfigured by numerous corrections ...
  1. Meanwhile, we put forward symmetric correction to resolve inherent error cumulation of point - by - point imaging modality

    同時進一步提出對稱校正的方法以解決逐點成像法固有的誤差累積。
  2. Forward error correction ( fec ) has been widely used in the modern communication system

    在現代通信系統中，前向糾錯（ fec ）得到了廣泛的應用。
  3. There are several procedures used to reduce these deteriorating effects, including the use of forward error correction techniques, error concealment methods and error resilience schemes. this paper studies error resilient techniques in internet video transmission. in this techeniques, reed - solomon ( rs ) codes across packets is used for error protection against packet loss, and a self - adaptive error concealment method based on motion feature is proposed, which can conceal errors more effectively, particularly for video sequences with acute motion

    本文針對因特網視頻傳輸中的丟包現象進行研究，一方面利用rs編碼來提高視頻壓縮碼流抵抗誤碼的能力；另一方面，提出了一種基於運動特徵的自適應誤碼掩蓋方法，能夠較好的掩蓋視頻傳輸帶來的誤碼，特別對于運動幅度較大的視頻序列更能體現出其優勢。
  4. An algorithm of fec ( forward error correction ) system and it ’ s fpga implementation were researched, . then the fec system was applied to an audio transmission platform. the platform can decrease the error bit rate to 1 10 - 7 when channel error bit rate is 3 10 - 3. veriloghdl was chosen to design the circuits

    研究了一種前向糾錯（ fec ）演算法及基於fpga的相應電路設計，將此電路應用於數字音頻無線傳輸，搭建了一個完整的數字音頻無線傳輸平臺，當無線通道誤碼率為3 10 - 3時，經過該糾錯電路可以降低到1 10 - 7以下。
  5. A simulation model using the 0 - 1 distribution as the bias probability distribution for both error detection and correction is put forward. the problem of optimum bias probability is solved in theoretical respect. the simulation efficiency at optimum bias probability is derived

    本文提出了一個同時糾檢錯系統的模擬模型，並採用二項分佈作為偏詈概率分佈，從理論上解決了最佳偏詈概率分佈問題，導出了最佳模擬效率的解析公式。
  6. Improvement on transmission mechanism of dynamic forward error correction code

    前向糾錯編碼傳輸機制的優化
  7. In proc. ieee wireless communications and networking conference wcnc, new orleans, louisiana, usa, sept. 1999, pp. 329 - 333. 39 itu - t recommendation h. 263 annex h. video coding for low bit rate communication - annex h : forward error correction for coded video signal

    在對這些高層編碼工具的介紹中，部分或全部給出了各個工具的設計思想和方法作用發展歷史，從而闡明為什麼在avs - m的標準制定過程選擇了該設計。
  8. In communication systems, there are mainly two methods for controlling transmission errors, one of which is forward - error - correction ( fec ) and the other is automatic - repeat - request ( arq )

    數據傳輸系統中有兩種技術被用來控制傳輸錯誤：即前向差錯控制技術（ fec ）和自動要求重傳技術（ arq ） 。
  9. This thesis presents a forward error correction ( fec ) algorithm and its circuit implementation, which is used in the wireless digital audio transmission system. also, an entire demo platform is built and error - correction ability of the system is tested based on this platform

    本文研究了一種應用於數字音頻無線傳輸系統中的前向糾錯（ fec ）演算法和相應的電路設計，搭建了一個硬體驗證平臺，並在驗證平臺上完成了電路的誤比特率測試。
  10. This thesis begins with hfc network theory and docsis, analyses modulation / demodulation process of data communication in hfc. then, several theories are analysed including qam ( quadrature amplitude modulation ), nyquist root square filter, fec ( forward error correction ), map ( bandwidth allocation map ). and digital signal transmission involved the other important international standard ? itu - t j. 83 annex a / b, is discussed

    本文從hfc網路理論和docsis協議入手，分析了hfc數據通信的調制解調過程，對qam調制、奈奎斯特均方根濾波器、前向糾錯（ forwarderrorcorrection ，簡稱fec ） 、 map通信等進行了闡述；還從中探討了電纜數據機需要用到的另一個國際標準ituj . 83annexa / b所設計的mpeg信號的數字傳輸。
  11. Against some avoidless jamming, forward error correction technology is used to raising the system dependability

    在無法避免干擾的情況下，採用差錯控制技術提高通信的可靠性。
  12. This paper puts forward solutions which aim at several kernel technologies of this system project : ( 1 ) in order to complete the communication between, the parallel correspondence circuit suit for this system is built on the base of the smc source. ( 2 ) the theory about data correspondence, for example communication protocols data chain data exchange and error control, is used in this system. ( 3 ) the error control technology is discussed in the aspects of hardware and software : the odd and even correction of 51 smc serial communication and a fast crc suit for smc

    本文針對現有系統方案幾個核心技術，提出了以下解決方法： （ 1 ）為完成主從cpu之間的通信，在現有單片機資源基礎上搭建適合本系統的並口通信電路。 （ 2 ）將數據通信的理論如通信協議、數據鏈路、數據交換及差錯控制等運用於該系統中。 （ 3 ）從硬體和軟體兩個方面探討了差錯控制技術： 51單片機串列通信中軟硬體結合奇偶校驗；其次採用了一種適合單片機的快速crc校驗技術。
  13. Firstly, the discrete multi - tone processing in an adsl central office - side interface card is detailedly introduced. the processing mainly includes timing, framing, interleaving, forward error correction, cyclic redundancy check, constellation encoding, inverse fast fourier transform processing, prefixing, d / a converting, and amplifying. secondly, a kind of interface named utopia level 2 is used as the network interface, with which many adsl devices are linked with one atm layer

    本文比較詳細地闡述了數字用戶線接入模塊（ dslam ）開發方案中， adsl局端介面模塊的dmt編碼與調制過程，討論了其組網應用方式以及基於atm的網路側介面utopia2技術，分析了adsl與其它寬帶接入技術的相互聯系和優缺點，並介紹了方案中所採用的一些關鍵技術，包括在線插拔技術、系統同步啟動和故障自動重起技術以及高速數字信號完整性的保證技術等等。
  14. Data flow approach using qpsk modulation, forward error correction and interference with the advantage, meet international standards for data transmission related technical parameters of microwave transmission equipment

    數據流採用qpsk方式調制，具有前向糾錯及抗干擾強的優點，符合國際數據傳輸相關標準微波傳輸設備技術參數
  15. In this paper, we analyze the statistic characters of time - delay in detail, and put forward to adopt elman nn to forecast time - delay intelligently, design appropriate compensator based on adaptive smith forecast theory. the experiment results prove that this method can improve the forecast accuracy and system ' s dynamic performance. in the application of real time data transmission, forward error correction ( fec ) is a good method to resume the lost data

    針對這個問題本文進行了詳盡的統計特性分析，並且提出採用elman動態神經網路結構對網路時延進行智能預測，並根據自適應smith預估補償控制原理設計合適的時延補償器，並且應用於基於web的二階水位控制系統中，實驗結果證明了採用此方法可以提高預測精度，使時延補償器適應時延變化的動態性更強，從而在保證系統穩定性的基礎上，西安理工大學碩士學位論文提高系統的時延補償精度。
  16. Next, the paper summarizes the principles to get the main parts of the chinese sentences according to the chinese syntax rules, and analyzes the realization and error - correction mechanisms to identity the contention of the basic sentences. on the bases of the principles and the mechanisms above, this paper brings forward the method to identity the contention of the network information in real time, and also shows a series of functions for the realization of the method

    同時，本文還根據漢語的自然語法規則總結出了句子主幹提取的原理，再進一步解析出漢語基本句型的語義分析及其誤差校正的機制，最終提出了一種對網路信息內容的論點傾向進行實時判別的方法，並且開發出了一套對應的函數庫對該方法加以實現。
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