符號差 的英文怎麼說

中文拼音 [fúháochā]
符號差 英文
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  • 符 : Ⅰ名詞1 （符節） tally （with two halves made of wood bamboo jade metal issued by a ruler to gener...
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 符號 : 1 （記號; 標記） character; sign; symbol; mark; code; notation; expression; denotation; sentinel ...
  1. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。
  2. In this paper, research on the algorithm of complete digital if and baseband transmission system and the realization of transmitter and receiver. / 4 - dqpsk is chosen as digital modulation scheme. the scheme of demodulation is baseband differential detection. sliding correlator can realize the symbol synchronous acquisition ; early - late gate synchronizer is used to do symbol synchronous tracking

    系統的發射機選定/ 4 - dqpsk為調制方式，接收機採用基帶差分解調的非相干解調方式，滑動相關器捕獲發送的pn序列，早遲門同步器跟蹤符號同步，使用相關器對同步后的符號進行最佳判決，並在這些演算法實現的基礎上，實現了直接序列擴頻和解擴技術。
  3. On the compatibility of halliday ' s social semiotic theory and saussure ' s semiology

    索緒爾與皮爾士符號學觀差異分析
  4. A / d samples the intermediate frequency signal. the digital signal proceeding part based on tigersharc dsp can process the baseband digital signal including the algorithm of baseband modulation, baseband differential detection and symbol synchronization, etc. digital up converter supports interpolation filter and complex mixer

    A / d對中頻信號進行采樣，數字信號處理部分以tigersharcdsp為核心，負責基帶采樣數字信號的處理，實現基帶信號調制，基帶差分解調，符號同步的捕獲和跟蹤等演算法。
  5. An analysis of the difference of botanical symbols between chinese and english culture

    漢英文化中植物符號表徵差異的分析
  6. It is suggested that the relationships are due to psychology and language intrinsic system itself

    這些共性與差異與民族心理及語言符號形式本身均有關系。
  7. For example, carrier frequency offsets, which are caused by the inherent instabilities of the transmitter and receiver carrier frequency oscillators, can lead to severe system degradation due to inter - carrier interference ( ici ). symbol timing synchronization must also be achieved in order to avoid inter - symbol interference ( isi )

    其載波頻率誤差會引入子通道之間的干擾（ ici ） ，而幀同步的誤差會引入符號間干擾（ isi ） ，同時還會對通道估計帶來嚴重的影響。
  8. The future wireless mobile communication systems are expected to provide ubiquitous, high - quality, and high - rate mobile multimedia transmission. however, hostile multipath fading radio conditions give rise to serious inter - symbol interference ( isi ) ; even worse, wireless channel are often time varying, which makes the system more vulnerable and more difficult to track the channel state. orthogonal frequency dvision multiplexing ( ofdm ), which is inherently resistant against isi, has invoked a popular research interest in recent years, and has been a promising candidate technology of the physical layer for future weideband high - date - rate wireless communications. notwithstanding, ofdm is much more vulnerable to errors of both time and frequency synchronization and to that of channel estimation, and how to obtain correct timing and channel estimation efficiently is highly critical to ofdm systems. the dissertation will focus on both of the aspects of ofdm systems mentioned above

    但是無線環境的多徑特性造成通信系統中嚴重的符號間干擾，同時無線通道的時變性使得通道特性跟蹤復雜。而正交頻分復用技術（ orthogonalfrequencydivisionmultiplexing ， ofdm ）正是一種解決符號間干擾的有效傳輸手段，因此ofdm技術作為未來寬帶高速率無線通信的物理層候選技術在當前引起了一股研究熱潮。但ofdm系統對定時同步誤差和通道估計誤差非常敏感，如何在ofdm系統中準確快速地實現符號同步和通道估計是至關重要的，本論文將重點針對這兩個問題進行討論。
  9. Gender differences in communication of nonverbal symbol

    非語言符號傳播中的性別差異
  10. The adaptation processing includes linear prediction coefficient adaptation and adaptation of quantization step size for residual signals. based on g. 726, we adopt a huffman coder to make use of probability statistic of bit cascade covering n ( n 1 ) samples generated from adpcm, in order to further reduce the bit rate. ng is lossless entropy coding, the speech quality of our improved algorithm should be same as that of g. 726 standard

    我們的研究和改進工作包括:研究最優非均勻自適應量化器，及其自適應演算法;研究波形預測函數，以及函數零點、極點的自適應演算法;基於每n （ n 1 ）個樣本所對應符號的概率統計，對預測殘差量化值再進行huffman編碼，進一步降低比特率。
  11. But the original blast algorithm has a very high computational cost because of the nulling and cancellation step. on the other hand, the algorithm also needs an optimal detection ordering to restrain the effect of error propagation and improve the detection reliability

    常規blast演算法由於需要進行大量的線性迫零（矩陣求逆）和串列符號刪除等運算，計算復雜度非常高，另一方面，演算法還需要尋找最優的信號檢測順序來消除誤差傳遞的影響。
  12. This paper aims at distinguishing referential and literal meanings and its affect on the translation of idioms, and through a study of the asymmetrical relationship between cultural differences and meaning, at demonatrating how knowledge of the cultural differences between the source and target languages will influence idiom translation

    本文試圖通過對語言符號信息的分析，論述指稱意義與字面意義的區別及其對成語翻譯的影響，同時結合文化差異與語義的非對應之間的聯系，說明對原語與譯語文化差異的了解與否在成語翻譯中所產生的影響。
  13. In optical character recognition, the difference between color or shading of the printed material on a document and the background on which it is printed

    在光學符號識別中，文件上印刷材料的顏色或濃淡和印刷背景之間的差別。
  14. R _ 386 _ gotoff this relocation type computes the difference between a symbol ' s value and the address of the global offset table

    這種重定位類型計算符號的值和全局偏移表地址之間的差異。
  15. When high school students are solving chemical problems, they usually choose a familiar way to represent the problem, or sometimes may use several representation methods ( symbol representation, mathematical representation, chart - word representation, words representation and so on ) to represent the same problem. problem representation has difference in levels and sorts. the appearance of the problem and the problem solver ' s knowledge structure largely affect the problem representation

    在解決化學問題時，中學生通常以一種自己熟悉的表徵方式表徵問題（也常使用符號表徵、數學表徵、圖文表徵、言語表徵等多種表徵方式表徵同一個問題） ；學生在問題表徵中存在著問題表徵的層次和種類差異；問題的呈現方式和問題解決者的知識結構較大程度地影響著問題表徵。
  16. The gap between designers ' interpretations and users ' understanding of product form is recognized as coding - this can be divided into two diametrical positions : encoding ( where signs are produced ) and decoding ( when signs are received )

    設計師詮釋產品造形的原構想和使用者理解的結果，因為符號與符碼的效應而有所落差，以相對應的兩個角度來看，即為編碼（產生符號）與解碼（接收符號） 。
  17. In the dissertation, some net technologies relating tight to the web application and net aided design ( nad ) is discussed in brief. the purpose of investigation is to be explore and develop a approach in which the multicultural aspects and regional factors such as langugage translations, multilingual drawings, notations and specifications, unit conversions, standards, materials, etc, can be handle in a rational and systematic way

    本文簡單論述了web應用相關的網路技術和網路輔助設計技術（ nad ） ，重點研究了圖樣中的尺寸公差的轉換方法以及圖樣中注釋機器翻譯方法，以期探索和發現一個合理和全面的方法，解決在全球製造環境下圖樣間尺寸、語言、符號、說明以及單位的轉換問題。
  18. Only when die symbol of die coefficient of reaction is steady and die absolute numerical value or expected value of die coefficient of reaction is larger and its variance is smaller, it can be said that die income redistribution has enough capability of controlling consumption demand

    只有當反應系數的符號明確、反應系數或期望反應系數的絕對值較大、反應系數數值比較穩定即方差較小時，我們才能認為該收入再分配具備對消費需求的有效調控能力。
  19. We propose a combined slf method to extrapolate feeder load growth by using feeder ' s history peak value and the merits of gray theory and genetic programming ( gp ). at first, we adopt load transfer coupling method to correct load history and its error for load transfer. secondly, we get the real power - supply area by using layer overlap analysis, based on practical feeder path and distribution gis map layer

    將gis的空間信息分析功能應用於配網空間負荷預測的研究：綜合利用灰色理論及遺傳規劃（ geneticprogramming ， gp ）的優點，提出了一種根據饋線的歷史峰值負荷進行外推的組合slf法：首先採用負荷耦合回歸法來修正負荷歷史，消除由於負荷轉移引起的誤差；然後根據實際饋線路徑和配網gis圖形分層，運用圖層疊加分析得到饋線的實際供電范圍；接著採用灰色關聯度聚類方法對饋線負荷增長曲線進行聚類分析；最後採用gp來對灰色聚類結果進行符號回歸，分別得到每一類曲線的最佳擬合曲線形式。
  20. In the next section, m - ldpc codes were applied in mimo space and a scheme of

    在兩符號差分譯碼演算法的研究基礎上，提出一種基於軟信息反饋的
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