窄頻帶傳輸 的英文怎麼說

中文拼音 [zhǎibīndàizhuànshū]
窄頻帶傳輸 英文
narrow-band transmission
  • 窄 : 形容詞1. （橫的距離小） narrow 2. （心胸不開朗; 氣量小） petty; narrow 3. （不寬裕） hard up; badly off; short of
  • 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...
  • 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 the past few years, there has been significant interest in digital video applications like video conferencing and video e - mailing over internet, video telephony over public switched telephone networks ( pstn ) and wireless networks, etc. by removing spatio - temporal redundancies existing in adjacent frames, motion estimation can reduce the coding bit - rate significantly

    低速率視頻編碼技術已在許多領域得到了應用，如在pstn （公共電話網） 、無線網、 n - isdn （窄帶綜合業務數字網） 、 b - isdn （寬帶綜合業務數字網）上傳輸視頻會議、可視電話和無線手持終端等。
  2. This master ’ s degree thesis firstly introduces and discusses the principle of ofdm and the merged blue print for digital terrestrial television broadcasting in china, then proposes a scheme for the test platform of narrowband ldpc decoding efficiency based on fpga. this scheme includes techniques such as time - domain synchronization using pn and power estimation using pilots

    本論文首先介紹並討論了數字電視傳輸標準tds - ofdm的實現原理，對其中的一些關鍵問題做了詳細的分析，在此基礎上提出了一種基於fpga的窄帶ldpc解碼-誤碼測試平臺設計方案，即利用時域pn頭同步及頻域導頻進行功率估計的fpga設計。
  3. The controlled object hyvp ( hydraulic pressure vibration platform ) has the property of big loading pressure and rating power, so it need considerable transmitted and control power, it also has the property of high - level math model, and narrow frequency width in closed - loop, and bad stability. this thesis is based on the hpvs in the “ tiema project ”

    被控對象（液壓振動臺）具有負載壓力和額定功率相當大的特點，因此要求傳輸和控制的功率要相當可觀;而且它還具有數學模型階數高、閉環頻帶寬度窄、穩定性差等特點。
  4. So it can decrease the module ' s volume, lower its power consume, what ' s more, it make it possible for demodulation of other types signal such nbfm on the same platform

    這樣能夠在很大程度上使解調模塊體積縮小、功耗降低，而且便於擴展解調其它類型的信號，例如窄帶調頻、短波段數據傳輸等。
  5. An adapting modulation scheme which behave spectral energy centralized, frequency spectrum narrow become very important

    數據傳輸中，需要頻譜能量集中，頻帶較窄的調制方式，以及解決干擾問題。
  6. For medium or long distance underwater acoustic communication, the narrow bandwidth and low carrier frequency only supports low bit - rate signal transmission

    對于中、遠距離的水聲通信而言，水聲通道的窄帶寬、低載波頻率特性只能支持較低的信息傳輸速率。
  7. With the characteristics of large ambient noise, very narrow bandwidth, low carrier frequency, great propagation latency and time - space - frequency variant multipath effect ( mpe ), the stochastic ocean channel has demonstrated the greatest complexity and difficulty for underwater acoustic wireless communications. among them multipath effect ( mpe ) is the most difficult obstacle that results in signal fading and inter - symbol interference ( isi )

    但是噪聲高、帶寬窄、載波頻率低、傳輸時延大、多途徑效應隨時間?空間?頻率變化等通道特性都會給有效、可靠的水聲通信帶來很大的麻煩，其中多途徑效應是最主要的困擾因素，它會導致信號幅度衰落和碼間干擾。
  8. The latter primarily improves the transmission distance and reliability by selecting the repeater automatically. the frequency domain auto - adaptatation filter algorithm is deduced and reliabity by selecting the repeater automatically. the frequency domain auto - adaptaion filter algorithm is deduced and a method of frequency domain algorithm to restrain the marrow band interference is given on the foundation of the time domain minimum mean square error auto - adaptation filter. then the meter reading system to can learn the power network structure and automatically create linked path by using neural networks auto - study ability and analyzing the reading data

    後者主要是對中繼節點的自動選擇，以提高信息的傳輸距離與可靠性。針對電力線擴頻通信通道的特點，在時域最小均方誤差自適應濾波演算法的基礎上，推導了頻域自適應濾波演算法，並提出了頻域演算法抑制窄帶干擾的具體方法。運用神經網路的自學習方法，通過對抄讀數據進行分析，使抄表系統感知電網拓撲結構，自動建立中繼路徑。
  9. We designed a wireless asymmetric physical layer link model with a direct sequence spread spectrum system as a transmitted reference. uplink and downlink are both one - way links connected by an ip tunneling. uplink is consisted with the narrowband radio data link of the warfighter information networks ( win )

    研究了無線非對稱鏈路，提出了一種用參考法直接序列擴頻（ dsss ）實現的無線非對稱數據傳輸的物理層鏈路模型：利用現有戰斗員信息網電臺的窄帶數據鏈作為上行通道，通過ip隧道技術保證單向鏈路的連通性。
  10. So the upstream channel has the character of narrower bandwidth and bigger noise. this character has a big influence on data transmission on the upstream channels

    因此，上行通道具有頻帶窄，噪聲大的特徵，這一特徵對上行通道的數據傳輸具有極大的影響。
  11. But it is very difficult under water. electromagnetic waves do not propagate over long distances under water except at extremely low frequencies

    而且，存在著環境噪聲高，帶寬窄，可用載波頻率低和傳輸時延大等諸多不利因素。
  12. Facing with the limit of the wide of the line and the crowding of internet, streaming media is the best way of transmission of information through network

    面對有限的帶寬和擁擠的撥號網路，實現窄帶網路的視頻、音頻、動畫傳輸最好的解決方案就是流式媒體的傳輸方式。
  13. By the study of rtp / rtcp protocol, video encod / decode technic, directshow, timestamp and multicast, the paper brought forward the design project of streaming media real - time system based on rtp. the system has the function of video / audio capturing, encoding, network transmission, decoding, storage and playback. it resolved some problems such as streaming media transmission on narrow banwidth better. these functions were accomplished by software with using mpeg - 4 standard to encode and decode video stream

    該系統具有音視頻採集、編碼、網路傳輸、解碼、和回放等功能，較好的解決了目前網路流媒體傳輸存在的網路帶寬較窄等問題。這些功能都採用軟體實現，採用視頻壓縮標準mpeg - 4對視頻進行編碼解碼。在硬體方面只作較少的投資，因此，成本低，易於升級。
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