高頻譜 的英文怎麼說

中文拼音 [gāobīnpǔ]
高頻譜 英文
high frequency spectrum
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 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）...
  • 頻譜 : frequency spectrum; frequency content; spectrum; power density spectrum; power spectrum; [系統] s...
  1. Ofta publishes spectrum release plan to increase transparency in radio spectrum supply

    電訊局公布頻譜供應表以提高頻譜供應的透明度
  2. The predistortion, which aims at compensating for the nonlinear distortion caused by the power amplifier, has a good performance in eliminating the nonlinear distortion of am / am & am / pm, improving the aci and spectrum efficiency

    預失真技術是針對射頻功率放大器非線性而提出的一種補償技術，可以有效消除由非線性造成的傳輸信號的幅度和相位失真，降低信號鄰道干擾（ aci ） ，提高頻譜利用效率。
  3. In the software design, we used the window function to improve the resolution of the spectrum, then improve the precision for measurement

    軟體方面介紹了基於快速傅立葉變換原理的測相方法，並結合窗函數來提高頻譜的解析度，從而提高了測量的精度。
  4. Smart antenna may reduce coggege of electronic engineering of uestc, the cochannel interferences ( cci ), enhance the user capacity and spectrum efficiency, reduces the transmit power and electromagnetic interferences, enhance the transmit efficiency, dynamically divide cells in third generation cellular

    智能天線技術應用於第三代移動通信系統中具有可以減小因頻率復用造成的共通道干擾（ cci ） 、提高頻譜利用效率及增大系統容量、減小發射功率和空間電磁干擾、增加發射效率、對小區進行動態劃分等優點。
  5. On the other hand, cdma ( code - division multiple access ) communication system has been widely considered as the mainstream of 3g communication system, because it has the good qualities such as high utilization ratio of frequency band, low transmission power, powerful anti - multiple path falling and flexible capacity

    另一方面， cdma通信系統以其高頻譜利用率、低發射功率、強抗多徑衰落特性、軟容量等優點，已被廣泛認為是第三代移動通信系統的主流。
  6. Efforts must be made to accelerate the establishment of a radio management technology system in beijing, to improve the overall capability of spectrum management, radio signal monitoring, interference analysis and radio equipment testing

    加快構筑北京市無線電管理技術支撐體系，全面提高頻譜管理、無線電信號監測、干擾分析和無線電設備檢測能力。
  7. At last we introduce the realization of all the parts, the problem in the circuit design and the measured data. the results show that the designed system has met the requirement. in this dissertation, direct digital synthesis technology has been used in the phase - locked frequency synthesizer, which can make full use of the characteristics of direct digital synthesis technology such as flexible output wave shape and continuous

    本課題將直接數字式合成技術用於鎖相頻率合成器中，該方法將直接數字合成的特點，如輸出波形靈活且相位連續、頻率穩定度高、輸出頻率解析度高、頻率轉換速度快、輸出相位噪聲低、集成度高、功耗低、體積小等與鎖相環路的頻帶寬、工作頻率高、頻譜質量好等優點有機的結合起來，從而在寬帶的條件下實現了比較好的雜散性能和相噪。
  8. As a high band - efficiency digital modulation scheme, dvbc ( digital video broadcasting of cable ) qam ( quadrature amplitude modulation ) modulator is widely adopted in the wide - band communication area, such as hdtv broadcasting, cable modem, microwave communication, satellite communication and so on

    正交幅度調制器（ qammodulator ）作為一種高頻譜利用率的數字調制方式，在高清晰度電視（ hdtv ）廣播、 cablemodem 、固定寬帶無線接入、衛星通信、數字微波傳輸等寬帶通信領域得到了廣泛應用。
  9. So the combination of the algebraic model and the sbr technique provides a powerful fool for the solutions of molecular vibration problems

    把代數模型與sbr方法結合起來是處理分子高頻譜和大分子能譜的極佳方法。
  10. Because of the affection of noise and signal fading, in order to high data rate access and high quality, wireless communication need new technology to improve the link reliability and enhance the spectrum efficiency. mimo ( multiple input and multiple output ) can enhance the spectrum efficiency and increase channel capacity greatly, and reduce the multipath affection without spectrum band and power increasing. the 3th generation mobile communication wcdma is coming, with the purpose of putting mimo, stbc ( space time block coding ), space diversity into practice of wcdma systems, in order to lay the foundation of 3g toward 4g, this dissertation has done some research under this background

    在發射機和接收機使用多個天線進行數據傳輸的多輸入多輸出（ mimo ）技術，可以在不增加帶寬和天線發送功率的條件下，成倍的提高頻譜利用率，提高系統的通道容量，還可以抗多徑干擾。第三代移動通信wcdma即將到來，為了將多天線技術（ mimo ） ，空間分集技術，空時編碼技術用到wcdma系統中去，為第三代移動通信向第四代移動通信系統平穩過渡奠定一定的基礎，需要做一些理論上的研究。
  11. High - frequency spectrum behavior of laser scintillation in turbulent atmosphere

    激光大氣閃爍的高頻譜特性
  12. With the rapid development of science and experimental technology, especially the use of laser, the high overtones of some molecules can be assessed. on the other hand, with the appearance of highly symmetrical molecules, such as cm, plenty of research have been done about the big complicated molecules

    隨著科學技術的日新月異，實驗水平的不斷提高，特別是激光技術的引入，我們已經能夠得到一些分子振動的高頻譜；另一方面隨著具有高度對稱性分子如c _ （ 60 ）的發現，人們對復雜大分子開始了大量的研究。
  13. In the code division multiple access ( cdma ) system, the multiple access interference ( mai ) mitigation capability as well as system capacity are determined, to a great extent, by the correlation properties of spreading sequences ; while adaptive modulation and coding ( amc ) with high spectral efficiency is the key technique to obtain high speed and low symbol error rate ( ser ) performance in mobile data transmission

    在碼分多址（ cdma ）系統中，擴頻序列的特性在很大程度上決定了抗多址干擾（ mai ）能力和系統容量，而高頻譜效率的自適應調制編碼（ amc ）技術則是獲得高速率和低誤碼率（ ser ）移動數據傳輸性能的關鍵因素。
  14. A group of orthogonal frequency carriers are used in ofdm system to improve the using rate of spectrum. if the orthogonal character can be held and ignore the inter - channel interference ( ici ), the symbol error character of ofdm depend on the modulate of source codes. this dissertation propose the theoretic formula of ofdm - qam and ofdm - psk in this precondition

    為了提高頻譜利用率， ofdm系統使用了一組正交的子載波來傳輸信號，若能保證各子載波間的正交性不被破壞、不考慮通道間干擾（ ici ） ，則ofdm系統的誤碼性能由信元調制方案的誤碼性能決定，文中推導了該情況下ofdm - qam和ofdm - psk的理論誤碼率公式。
  15. Furthermore, it become more and more important in commercial wireless communication because it can reduce the effects imposed by multi - path fading and co - channel interference

    另外，跳頻通信也應用到民用通信中以抗衰落、抗多徑、抗網間干擾和提高頻譜利用率。
  16. Because high - speed data take up wide bandwidth, looking for one which have high efficiency modulation scheme and suitable for frequency hopping communication system is needed

    由於高速數據佔用更寬的帶寬，所以在調制制式上應該尋找一種適合於跳頻通信特點的具有高頻譜效率的調制方案。
  17. As one of the key techniques of new generation mobile communication systems and broadband wireless communications systems, " adaptive transmission " technique can exploit potential channel transmission ability sufficiently so that it enables the systems to reach the maximum transmission capacity and reliability by dynamically adjusting transmission parameters according to channel estimation and traffic qos requirement

    自適應傳輸技術是新一代移動通信和智能傳輸的核心技術之一。自適應調制是根據通道的實時狀態以及業務的不同特性動態調整傳輸參數，從而可以充分挖掘系統的傳輸潛力，提高頻譜利用率，以獲得最大的傳輸容量和最高的可靠性。
  18. It has adaptive flexibility, high capacity, high bandwidth efficiency and interference robustness

    具有自適應靈活性、高容量、高頻譜利用率、抗干擾的優點。
  19. To transmit with faster speed, higher spectrum efficiency and finer channel granularity is the requirement to the physical layer technologies

    對於物理層的要求則是更高的傳輸速率，更高頻譜利用率以及更小的通道粒度。
  20. It is also widely recognized as one of the key techniques in the next generation communication systems. from the above discussion, we can draw a conclusion that the burst cdma and the burst ofdm techniques will receive more and more attentions in the future

    而ofdm作為一種高頻譜效率的調制方式近年來得到了廣泛的肯定，不僅已經在數據地面廣播、無線局域網等通信系統中的到採用，並且在下一代移動通信中很可能成為一種主要的調制方式。
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