降符號 的英文怎麼說

中文拼音 [jiàngfúháo]
降符號 英文
down symbol
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 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 （...
  • 符號 : 1 （記號; 標記） character; sign; symbol; mark; code; notation; expression; denotation; sentinel ...
  1. 3 pnueli a. a temporal logic of concurrent programs. theoretical computer science, 1981, 13 : 45 - 60. 4 mcmillan k l. symbolic model checking

    符號化的模型檢測技術利用二叉圖binary decision diagram表示狀態轉換關系，降低了系統模型所需的內存空間。
  2. The nonlinear filtering for nbi estimate - subtract assumes that the prediction error is dominated by spread spectrum signal and the background noise power is far below spread spectrum chip power, this assumption promises the low error ratio of chip decision but may not be attainable to digitalized dsss receiver in military communication environment, and does not coincide with the principle of dsss communication that decreases bit error ratio ( ber ) depending on spread spectrum gain, not on chip power

    在干擾估計抵消濾波中，以往的非線性濾波要求干擾抵消濾波后擴頻信號功率遠大於殘余噪聲功率，進而假設碼片判決的誤碼片率基本為零，這一要求對軍用擴頻通信是不利的，而且也不符合擴頻通信利用擴頻增益降低誤碼率的原則。
  3. The main hardware - platform is based on the altra ’ s statix series fpga chip ep1s80f1020c5. the realization of the energy dispersal, ldpc - coding, symbol interleaving, constellation mapping, synchro - pn insertion, 3780 - point ifft ofdm, interplation fir, etc have been implemented based on fpga

    系統中能量擴散、 ldpc編碼、符號交織、星座映射、同步pn頭插入、 3780點ifftofdm調制以及信號成形4倍插值滾降濾波器等都是基於fpga硬體設計實現的。
  4. Numeric - symbolic technique is introduced in the procedure of resultant elimination, procedure of number - spobol manipulation is transformed into that of matrix manipulation. because joini variables are treated as symbols and all structure paramcters are treated as real nuxnbers, the complexity of derivation for input - output equaion is reduced. the soluton is verified with a numerical example, its rsults withoot extraneous roots agree with the original equaions

    消元過程中引入了數字-符號方法，將結構參數處理為數值量，將關節變量處理為符號量，將數字、符號推導過程轉化為了矩陣運算過程，由於結構參數以數值量的形式出現在方程推導中，降低了符號推導的難度，符號推導不需要復雜的符號處理軟體的支持。
  5. For wireless communications, direct sequence code division multiple access ( ds - cdma ) techniques have received a great deal of attention due to the expectation of capacity increase, interference rejection capability, security, and so on. in a high data rate application such as multimedia services, however, the capacity of ds - cdma systems is limited by both the inter - chip, or inter - symbol interference

    Cdma技術以其高抗干擾能力、高容量、高保密性等技術優勢在第三代移動通信系統中被廣泛應用，然而在高速數據業務中，嚴重的碼間干擾和符號間干擾會導致系統性能明顯下降。
  6. 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。
  7. With roll - off factor of 1. 35, rs coding efficiency of the goat. coding efficiency 7 8 rate for qpsk symbol rates by 2

    其中滾降系數為1 . 35 ， rs編碼效率為188 204 ，卷積碼編碼效率為7 8 ， qpsk碼率為符號率乘2
  8. Experiment results prove that this algorithm is a practical and effective method, with which the ideal cross - section curve can be acquired. the result is coincidence to the standard iri ( the international roughness index ) and meets the necessity

    實驗結論：基於陣列信號處理和小波降噪的演算法應用於路面平整度檢測可以得到較理想的斷面曲線，換算國際平整度指標iri與標定較吻合，符合處理要求。
  9. But conventional step - by - step decoding algorithm requires that every symbol of received word r ( x ) orderly adds to 2m - 1 nonzero elements of gf ( 2 ) to determine whether the weight of the error pattern has been reduced. if the weight of error pattern is reduced, the error location and the corresponding error value are found

    但是標準的step - by - step譯碼演算法將接收碼字中每個符號與伽羅華域gf （ 2 ~ m ）中的2 ~ m - 1個非零元素依次相加，判斷錯誤圖樣的重量是否下降，如果下降則說明找到了錯誤位置和相應的錯誤值。
  10. Agency for sports ethics offers lower cost program in full compliance with uci blood passport. pro continental bmc racing team signs on

    為運動道德提議的機構在對uci血護照的完整的依從降低費用節目。上使隊符號跑的職業人員大陸人bmc 。
  11. The map indicates the general rainfall condition in different regions of hong kong in the past hour. it does not mean that everywhere within a region receives the same rainfall amount as shown by the respective symbols

    此圖顯示香港各區過去一小時之大致降雨情況，並不表示區內所有地方皆有如圖中符號所顯示的降雨量。
  12. By using the solutions of a new auxiliary elliptic equation, a direct algebraic method is proposed to construct the exact solutions of some nonlinear evolution equations. the main difference between this method and previous auxiliary elliptic equation methods is that the balance order becomes smaller after using the new auxiliary elliptic equation. therefore, the derived algebraic equations are greatly simplified. meanwhile, the obtained new solutions contain more parameters to be chosen. for some special cases, they give the previous known solutions. it is shown that some new exact periodic solutions of some nonlinear evolution equations are explicitly obtained with the aid of symbolic computation

    利用一個新的輔助橢圓方程將求解非線性發展方程精確解的問題轉化為一個代數方程組進行求解，與已有的輔助橢圓方程法的主要不同是，應用這一新的輔助橢圓方程后降低了平衡次數，減少了所得的代數方程組的個數和方程的項數，從而大大地簡化了代數方程組的求解.同時，由於輔助橢圓方程的解中包含了更多的可選參數，從而給出了非線性發展方程的更多形式的解.作為應用，藉助于計算機的符號計算，求得了一些非線性發展方程的新的精確周期解
  13. The results of eof analysis of the rainfall anomaly in sping and respective month over north china indicate : spatial distribution of the first characteristic vecter is consistent in all areas ; the second characteristic vecter which is positive ( negative ) anomaly in north east, and is negative ( positive ) anomaly in south west in april is east west anomaly in each of spring., march and may ; the third characteristic vecter is north south anomaly in march

    華北春季及各月降水量距平場eof分解的結果表明：華北春季及各月降水量的第一特徵向量的空間分佈均為全區一致型；第二特徵向量除4月為東北正（負） 、西南負（正）異常外，春季、 3 、 5月均為東、西區異常符號相反； 3月第三特徵向量為南、北區異常符號相反。
  14. Graphical symbols for public information ; lifts

    公共信息用圖形符號.升降機
  15. The quality of the glyphs rendered from bit - map fonts always drops when they are scaled up, while that from vector fonts does not

    點陣字體符號在放大時質量一定會下降，而向量符號則不會。
  16. Xml expression is not symbolic information but structured block content. by using xml for describing data content, documents and lists, it is possible to exchange data between different systems. it improves persistence of data and reduces extra application costs caused by changes of the business regulations. it guarantees the connection with the old system and protects existing investments

    Xml在解決數據的表示和交換方面具有強大的功能， xml表示的不是符號信息，而是結構化的塊狀內容，通過使用xml來描述數據內容，文檔、表單可在不同的系統中相互交換，提高了數據的可持續性，降低了由於商業規則上的變化所帶來的額外應用成本，保證了同舊系統的連接，保護現有投資。
  17. Firstly, in wireless environment, receiver has no know the time delay between transmitter and itself. in ofdm system, ofdm data is transmitted as one symbol, so in order for correct demodulation, the correct start of symbol should be got from ofdm system to reduce the effect of isi. secondly, the high frequency utilization in ofdm is based on the orthogonal properties of sub carriers. if frequency offset is generated, the orthogonal properties among sub carriers will lost, that will cause inter carrier interference ( ici ) and high ber of system

    Ofdm技術也存在著一些缺陷，首先，在無線環境中傳輸的ofdm信號對定時要求高，為了減少碼間串擾（ isi ）影響，必須從接收信號中提取出正確的符號起始位;其次， ofdm系統對頻率偏移敏感， ofdm技術的高頻譜利用率和傳輸可靠性均以子載波的正交性為基礎，如果接收機和發射機之間發生頻率偏移，子載波之間就會失去正交性，導致嚴重的子載波間干擾（ ici ） ，降低系統性能。
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