power ratio 中文意思是什麼

power ratio 解釋
功率比
  • power : n 1 力,力量;能力;體力,精力;(生理)機能;〈常 pl 〉才能。2 勢力,權力,權限;威力;政權;權...
  • ratio : n. (pl. ratios)1. 比,比率,比值;比例;系數。2. 【經濟學】復本位制中金銀的法定比價。vt. 1. 用比例方式表達;求出…的比值;使…成比例。2. 將(相片)按比例放大或縮小。
  1. Stray radiant power ratio

    雜散輻射功率比
  2. Standard test method for estimating stray radiant power ratio of dispersive spectrophotometers by the opaque filter method

    用不透明濾光器評估色散分光光度計雜散輻射功率的標準試驗方法
  3. Signal - to - residual output - power ratio

    信號對剩餘輸出功率比剩餘輸出電平
  4. In this dissertation, researching from the basic concept of large signal network analysis, we discuss the measurement theory and technology of rf network nonlinearity and the characterization technology of intermodulation distortion in detail, and analyse some nonlinear characteristic excited with a one tone or multi - tone, such as am - am, harmonic distortion, intermodulation distortion, adjacent channel power ratio and how to qualitatively analyse nonlinearity of rf network to make the measurement and calibration

    本課題從大信號網路分析的基本概念出發,詳細討論了射頻網路非線性的測量理論和技術以及互調失真表徵技術,分析了在單頻音和多頻音信號激勵下的一些非線性特性,如am - am , am - pm ,諧波失真,互調失真( imd )和臨近通道功率比( acpr )等,以及根據包絡域方法定性地分析射頻微波網路的非線性特性,以此來進行射頻網路的非線性測量和校準。
  5. Analysis of a forward link cdma signal spectral regrowth and adjacent - channel power ratio

    信號前向鏈路頻譜增生和鄰道功率比估計
  6. In this dissertation, ofdm which has been the hottest spot in communication field recently will be considered as my direction. the dissertation will study some key techniques in mc - cdma system, such as modulation technique, peak - average power ratio, detection technique and synchronization problem of the whole system. what ' s more, the results of calculation and simulation will be given

    本文以目前通信領域的熱點: ofdm (正交頻分復用)為研究方向,對于多載波cdma系統中的若干關鍵技術,即多載波cdma系統中的調制技術、峰平比性能、接收端檢測技術以及整個系統同步問題進行了研究,並給出相應的計算機模擬結果。
  7. In order to realize low half - wave voltage, high polarzation extinction ratio, low pigtailing polarization crosstalk, low insert loss, precise tapped power ( ratio ) and good splitting beam ratio, the optimum design was performed

    為了實現低的半波電壓、高的偏振消光比、低尾纖串音、低插入損耗、精確的抽頭功率比和良好的分束比,我們對器件結構進行了優化設計。
  8. Multithreaded microprocessor, which has many hardware contexts sharing an execution core, can efficiently exploit both the instruction level parallelism and thread level parallelism to acquire higher performance and better performance / power ratio

    多份硬體現場共享一組執行單元的多線程處理器能靈活地利用程序中的指令級并行和線程級并行,從而提供更好的性能。
  9. Research on reducing peak - to - average power ratio of mc - cdma

    降低峰值平均功率比的研究
  10. This paper deeply research on the synchronization, peak - to - average power ratio, multiuser detection of the current mc - cdma system

    本文深入研究了目前mc - cdma中同步、峰平比、多用戶檢測的問題。
  11. 2. clipping is used to reduce the papr ( peak - to - average power ratio ) of multicarreir gmsk signal. the conclusion is that the moderate clipping introduces small performance degradation

    採用削波方法來降低多載波gmsk信號的峰平比,結論是中等程度的削波只引起系統性能的略微下降。
  12. One of the major drawbacks of ofdm system is that the ofdm signal of the transmitter can have high peak - to - average power ratio ( papr ), which limits ofdm ’ s wide applications

    但是ofdm系統的一個主要缺點就是發送端的傳輸信號具有較大的峰值平均功率比( papr ) ,這限制了ofdm技術的廣泛應用。
  13. As for advanced boiling water reactors, the minimum critical power ratio should not exceed 1. 07 ; the maximum linear power density should not cause more than 1 percent of plastic deformation to fuel claddings

    對于先進型沸水堆,最小臨界功率比不超過1 . 07 ;最大線功率密度不使燃料包殼產生大於1 %的塑性變形。
  14. An optimal algorithm for reducing the peak to average power ratio of ofdm signal

    信號峰值平均功率比的優化演算法
  15. At the same time, a simple channel estimator that can suppress the peak - to - average power ratio ( papr ) for ofdm system with multiple transmitter antennas is proposed, its simulation proves again the result. ( 5 ) ofdm receiver is proposed with multiple transmitter antenna and alamouti scheme

    結果表明,多個獨立天線ofdm系統的性能明顯優于單天線的ofdm系統;同時還給出了一種簡單的能有效抑制峰值功率平均功率比( papr )且適于多發射天線ofdm系統的導頻符號輔助的通道估計方法,模擬結果再次證明了上述結論。
  16. The device is a synthetical applicating example of phase modulator, intensity modulator and directional coupler theory. the characters and fabricating process of linbo _ 3 optical waveguide, electrodes design principle, the influence of sio _ 2 dielectric buffer layer on the performance of the device and design principle of tapped power ( ratio ) are analyzed

    該器件是相位調制、強度調制和定向耦合器理論綜合應用的典型,文章從理論上分析了linbo _ 3光波導的特點、製作工藝、電極設計原理、 sio _ 2介質緩沖層對器件性能的影響和抽頭功率的設計原理等。
  17. Space - time block codes ( stbc ) based on orthogonal design has attracts enough attentions in its applications in mimo - ofdm systems for its full diversity exploiting and low coding / decoding complexity. these applications include not only system performance improvement, but also reduction of the peak to average power ratio in mimo - ofdm systems. under these backgrounds, this paper first studies space - time block codes under the single carrier, flat fading situation, discusses the encoding / decoding principle and its performance under different channels. then, the author focused on the performance of space - time codes under time selective and frequency selective channels, uncovered the fundamental cause of how maximum doppler shift and power delay profile influences the performance of space - time codes through deduction and simulation

    在上述背景下,本文以單載波,平坦衰落通道下的空時分組碼為切入點,深入分析了其編譯碼原理和在不同通道情況下的性能;以此為基礎,後文展開了對空時分組碼在多載波,時間選擇性和頻率選擇性衰落通道下的性能研究,通過理論推導和充分的模擬,揭示了空時/頻分組碼在時頻選擇性衰落通道中的性能變化的根本原因;在以上對多載波系統中空時分組碼的研究的過程中,作者發現了空時分組碼在降低系統峰平比方面應用的可行性,提出了一種降低峰平比的新方法。
  18. Fibre optic interconnecting devices and passive components - basic test and measurement procedures - examinations and measurements - coupled power ratio measurement for fibre optic sources

    光纖互連器件和無源元件.基本試驗和測量程序.檢驗和測量.光纖光源的耦合功率比測量
  19. Fibre optic interconnecting devices and passive components - basic test and measurement procedures - part 3 - 31 : examinations and measurements ; coupled power ratio measurement for fibre optic sources

    光纖互連裝置和無源部件.基本試驗和測量程序.第3 - 34部分:檢驗和測量.纖維光學源的耦合功率比測量
  20. Fibre optic interconnecting devices and passive components - basic test and measurement procedures - part 3 - 31 : examinations and measurements - coupled power ratio measurement for fibre optic sources

    纖維光學互連裝置和無源元件.基本試驗和測量程序.第3 - 31部分:檢驗和測量.纖維光學源的耦合功率比的檢測
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