頻譜節省 的英文怎麼說

中文拼音 [bīnpǔjiéxǐng]
頻譜節省 英文
frequency saving
  • 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...
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 節 : 節構詞成分。
  • 省 : 省動詞1 （檢查自己的思想行為） examine oneself critically 2 （探望; 問候） visit （esp one s pare...
  • 頻譜 : frequency spectrum; frequency content; spectrum; power density spectrum; power spectrum; [系統] s...
  • 節省 : economize; save; use sparingly; cut down on; retrench; gain; spare
  1. To utilize the advantages of dsp chips, the system should be computing sources economical. according to digital signal processing theory, the poly - phase fir can help reduce the workloads of the ddc / duc. therefore, adding the complex carrier mixers, the channelization system ( a method of using a single wideband facility to transmit many relatively narrow - bandwidth signals. by subdividing the frequency spectrum used in the wideband channel ) can be formed utilizing the characters of fft

    為了使開發出的軟體可以適用於高速dsp器件開發，節省系統資源，課題首先從數字信號處理的理論進行分析，得出可以利用抽樣率轉換的數字濾波器的特點，即多相濾波實現數字上下變頻計算負擔的減小，之後進一步將多相濾波器與頻譜搬移部分結合，通過公式的推導，得出可利用快速傅立葉變換的特點實現多路信號的通道化發射和接收的處理模型。
  2. Traditional delay estimation based on ica requires the trail sequences to initialize the receiver, but the new algorithm based on ica does not need the trail sequences. it is based on the channel character of downlink, using the ica algorithm to estimate the multi - path mixture matrix, then, find the delay information which is embodied by the column vector of the mixture matrix. the simulation results show that it does enhance the performance of traditional detector without wasting the invaluable frequency resource

    傳統的通道估計演算法需要訓練序列使接收端的參數調整到理想狀態，而本文提出的基於ica的通道估計的多用戶檢測演算法不需要訓練序列，它是利用下行通道的固有特點，用ica的盲源分離法估計出多徑通道的卷積矩陣，從而從中提取出通道的延遲信息，模擬實驗結果證明這種方法在節省了頻譜資源的同時取得較好的估計效果，使得傳統的接收機的誤碼性能得到了很大的提高。
  3. Finally in chapter 6, the problems of boundary conditions and incident wave, as the most valuable problem of mrtd as a time - domain method, are studied. this chapter presents the simulation results of the electromagnetic propagation and its interactions with the dielectric slab and analyse of the graph of the reflection coefficient in frequency. compared with fdtd results, the numerical results, obtained using the mrtd method, show the directness and conciseness of mrtd as a time - domain method and the advantages in grid enlargement and saving computer resource etc.

    最後，第六章討論了mrtd作為時域數值技術最具實際應用價值的邊界條件設置和入射波加入等問題，並給出模擬電磁波傳播過程和介質板反射系數頻譜分析，其數值結果表明了mrtd作為時域方法的直觀簡練，與fdtd方法的結果比較，顯示了其在擴大網格、節省計算資源等方面的優勢。
  4. As dab system serves an area by using one single frequency network, more radio services are available alongside with data and pictures transmissions. this significantly expands the number of channels and allows for a more efficient use of the available spectrum as well as more interactions with audience

    由於數碼聲音廣播支援單頻網路的運作，即全港均用單一頻率發射及接收，可以大幅節省頻譜，從而提供更多電臺服務，以及傳輸數據和影像等由於更有效運用廣播頻譜，電臺頻道數目將可倍增，而服務也可多元化。
  5. As dab system serves an area by using one single frequency network ( sfn ), more radio services are available alongside with data and pictures transmissions. this significantly expands the number of channels and allows for a more efficient use of the available spectrum as well as more interactions with audience

    由於數碼聲音廣播支援單頻網路的運作，即全港均用單一頻率發射及接收，可以大幅節省頻譜，從而提供更多電臺服務，以及傳輸數據和影像等；由於更有效運用廣播頻譜，電臺頻道數目將可倍增，而服務也可多元化。
分享友人
分享到 Line

分享到臉書