timing algorithm 中文意思是什麼
timing algorithm
解釋
定時演算法-
The basis is hierarchical placement based on the model of directed graph partition. introducing timing - driven placement to clustering, it is an excellent method that mixes the characteristics of timing - driven placement, clustering and directed graph partition. integrated with cdp, this algorithm can solve the system - level vfg problems of electronic devices
該演算法是基於有向圖分解模型的分級布局演算法，將定時驅動布局思想引入結群過程，是集定時驅動布局、基於結群的布局、基於劃分的布局和有向圖分解思想為一體的快速布局演算法。 -
An algorithm of timing - error estimation of qam signals
信號定時誤差估計演算法 -
Real time seafloor tracking technique is the critical technique to ensure smooth seafloor surveying with full coverage and high efficiency. after detailed investigation on stochastic features of seabed reverberation produced by mbss systems, the author presented an algorithm and a set of relevant key coefficients for real time seafloor tracking, taking into account of characteristics of signal processing and timing sequence of the real system and introducing theorems of terrain surveying. as an achievement, a mathematical model was established based on the technique of centered filtering
海底地形實時跟蹤技術是保證多波束測深系統實現高效率全覆蓋水下地形測量的核心技術，作者通過對多波束測深系統海底回波信號統計特性的研究，依據地形測量理論，並結合實際系統信號處理的技術特點和處理時序，提出了實現海底跟蹤控制的關鍵參數及計算方法，建立了基於中值濾波技術的海底地形實時跟蹤數學模型，並開發出實時地形跟蹤專家系統，該系統經多次海上實驗驗證表明：理論正確、方案可行，取得良好效果。 -
An algorithm of path - based timing optimization by buffer insertion is presented. the algorithm adopts a high order model to estimate interconnect delay and a nonlinear delay model based on look - up table for gate delay estimation. and heuristic method of buffer insertion is presented to reduce delay. the algorithm is tested by industral circuit case. experimental results show that the algorithm can optimize the timing of circuit efficiently and the timing constraint is satisfied
提出了一種基於路徑的緩沖器插入時延優化演算法，演算法採用高階模型估計連線時延，用基於查表的非線性時延模型估計門延遲.在基於路徑的時延分析基礎上，提出了緩沖器插入的時延優化啟發式演算法.工業測試實例實驗表明，該演算法能夠有效地優化電路時延，滿足時延約束 -
To develop a new approach so as to realize music fountain control with high quality, this paper describes the control design for music fountain system based on the industry personal computer. pwm frequency conversion timing, preprocessing, predicting and compensating algorithm, and software signal control in advance are adopted, which realize color music spring control with high quality, provide a new advanced method for the control design of music spring
本文採用pwm變頻調速、預處理、預測補償控制和基於數據庫的軟體信號提前控制方法，提出了一種新的先進的音樂噴泉設計方案和控制途徑，並與傳統設計方案進行了分析比較，用面向對象的編程方法完成了對當今較為流行的mp3音頻格式的解碼，同時實時提取了音頻信號。 -
A algorithm is presented to identify dynamic crosstalk noise. in the course of dynamic crosstalk noise identification, hybrid timing analysis is used to provide accurate signal arrival time, which can provide more accurate timing information than static timing analysis. at the same time, a novel test generation is chosen to verify the correlation of signals. so dynamic crosstalk noise can be identified by these accurate timing and logic information
提出了動態串擾噪聲的識別演算法.針對基於傳統靜態時序分析的結果過于保守的缺點，本演算法引入了混合時序分析，縮小了時間窗區間，為動態串擾噪聲的識別提供了準確的時序信息，與此同時，通過測試生成來驗證信號間的邏輯關系，根據這些準確的時序及邏輯信息，識別出動態串擾噪聲 -
Abstract : an efficient parallel global router using random optimization that is independent of net ordering is roposed. parallel approaches are described and strategies guaranteeing the routing quality are discussed. the wire length model is implemented on multiprocessor, which enables the algorithm to approach feasibility of large - scale problems. timing - driven model on multiprocessor and wire length model on distributed processors are also presented. the parallel algorithm greatly reduces the run - time of routing. the experimental results show good speedups with no degradation of the routing quality
文摘:設計實現了一個高效的線長模式下基於多處理機的并行總體布線器.通過對非時延驅動模式下串、并行演算法的總運行時間和求解時間的比較，表明該并行演算法能夠在保證求解質量無明顯變化的前提下大大加快總體布線演算法的求解速度.同時，也提出了基於分散式體系結構的并行總體布線演算法 -
Secondly, the dissertation proposes a novel blind symbol - timing scheme for ofdm systems based on cyclostationarity feature of received symbols. the proposed schemes also exploits the periodicity of ofdm symbol introduced by cyclic prefix, by applying 2 - dimentional fourier transformation and choosing the appropriate correlation peak value as the symbol start location, the precision of this scheme is higher than previous conventional method. thirdly, the dissertation presents analysis with regard to channel estimation of ofdm systems. several interpolation algorithm in ofdm systems which based on pilot sequence have been analyzed in the first instance, and the influence of the channel noise on interpolation precision has discussed. the theoretic analysis and simulation results show that : the interpolation error induced by the precision of interpolation procedure itself has out weight
第三，論文在ofdm系統的通道估計方面，先對基於導頻的ofdm通道估計中的多種插值方法進行了分析，討論了噪聲對插值精度的影響，指出插值本身的精度所造成的插值誤差遠大於噪聲所帶來的插值誤差，從而階次更高的插值演算法在實用中並非最優的;並指出插值濾波法比變采樣率演算法對噪聲的影響更為敏感，在信噪比較高時插值濾波演算法比變采樣率演算法更優。 -
In this article, we study the implemetation of fpga for elliptic curve digital signature algorithm. based on number thesis 、 abstract algebra and complex thesis ， integrated information theory 、 cryptography and some specific relevant algorithm ， we ascertain the implementation of ecdsa for hardware project ： according to the design idea of hiberarchy and modularization, we adopt very high speed ic hardware description language ( vhdl ) as design input and simulate the design in every level and every model for the correct of the fundamental design. after finish the top design, we perform the whole simulation. then ， we carry out the timing simulation after the logic synthes and layout
本文從實際應用出發，研究了橢圓曲線數字簽名演算法的fpga的實現：以基本的數論理論、抽象代數和復雜度理論為依據，結合信息論、密碼學的一些知識以及一些具體的相關演算法，確定了ecdsa的硬體實現方案：按照層次化、模塊化的設計思想，採用硬體描述語言vhdl作為設計輸入進行ecdsa的硬體設計；在每個設計層次和每個模塊都進行了模擬驗證，得以保證底層設計的正確性。在確保每個模塊的設計正確后，完成對電路的頂層設計，進行總體的模擬。 -
Aiming at realizing an all - digital programmable qpsk modulator with data rates covering 2k ~ 2. 048mbps, this thesis puts research on modulator architecture, base - band signal shaping, programmable interpolation algorithm, and digital signal processing algorithms with fpga. we have completed the program design and the timing simulation, the pcb board has been fabricated. the similation result is given to verify the design
本文以實現2k ~ 2 . 048mbps傳輸速率的變碼速率全數字qpsk調制器為目標，對全數字調制器結構、基帶成形濾波、高倍可變內插以及基於fpga的信號處理演算法等問題進行了研究，編寫了調制模塊的vhdl程序，完成了軟體環境下的驗證調試，並設計實現了板級調試系統。 -
Synchronous sampling software - timing compensation algorithm in ac parameters measurement
交流電參數測量中同步采樣的軟體定時補償演算法 -
The software could realize the wavemaker system control, data acpuisition, data analysis and sensor calibration, the applacation of multi - thread technology, precise timing technology and memory management technology in the wavemaker system is described respectively. furthermore, the software realizes real - time display of sampling process with directx technology and adopts object - oriented thinking to handle interfacing card. estimateing spectrum with ar model and calibrating the sensor with least square algorithm are also discussed in detail
控制軟體利用多線程技術進行多任務控制；採用高精度時間函數實現精確定時；利用虛擬內存與內存映射文件進行內存管理；採用directx技術實現采樣過程的實時顯示；利用最小二乘原理對傳感器進行標定；採用面向對象思想實現對控制採集卡的操作；利用ar參數模型法進行譜估計。 -
For symbol synchronization, a filtering and squaring algorithm of estimating the timing error has been introduced, and a method to improve the accuracy of estimated data has been presented, then two signal interpolation filter have been analyzed, one is fir interpolation filter, another is cubic interpolation filter
對于全數字接收機中符號定時誤差的恢復，先介紹了一種濾波平方后求符號定時誤差估值的演算法以及一種提高該演算法估值性能的改進方法，接著介紹了糾正定時誤差的fir插值濾波器和立方插值濾波器。 -
Solve optimization problem of traffic signal timing using genetic algorithm
運用遺傳演算法解決交通信號定時的最優化問題 -
Then based on the cyclostationarity of ofdm symbol, a synchronization algorithm for the joint estimation of timing offset and frequency offset is proposed and discussed in detail
並在此基礎之上提出了一個基於循環平穩的ofdm定時偏移和頻率偏移的聯合估計演算法。 -
The dissertation analyses the timing effect of ir drop, and gives the expression for the timing effect ; and the dissertation analyses the crosstalk effect of cell internal routing, presents a cell internal routing algorithm for crosstalk minimization and a crosstalk model for timing analysis
論文研究了irdrop對單元時序參數的影響，給出了相應的表示方法；論文研究了單元內布線對串擾效應的影響，提出了一種減小串擾效應的單元內布線演算法和串擾效應的估算模型。 -
The problem of signal processing for direct - sequence code - division - multiple - access ( ds - cdma ) signal over multipath frequency - selective mobile channels is considered. a new blind receiver is proposed. without the knowledge of the multiple - access interference users spreading code and the channel characteristics, the receiver achieves blind detection with prior knowledge of only the desired users spreading code and approximate timing. by using reduced rank adaptive decorrelating filter and adaptive multipath combiner which is based on decision - directed algorithm, the receiver gets the ability to combat both fading and the near - far effect at low cost. simulation results demonstrate that the proposed receiver offers high performance
本文研究多徑頻率選擇性衰落通道下直接序列擴頻碼分多址（ ds - cdma ）信號的處理問題，提出了一種新型的盲接收機.該接收機不需預知多址干擾用戶的擴頻碼，不需預知通道參數，只需已知期望用戶的擴頻碼和粗略的定時，就可以完成用戶的盲檢測.同時，該接收機通過降維自適應去相關濾波和基於判決指導的自適應多徑合併，來獲得低成本和良好的抗衰落、抗遠近效應性能.模擬結果驗證了本文提出的接收機的優良性能 -
Take the hoc based blind modulation detection algorithm as an example, the relationship between the blind modulation detection algorithm and synchronization is investigated. an unproved detection algorithm robust to frequency offset is proposed which solves the problem caused by the error in carrier synchronization. how to synchronize a received signal with unknown modulation type is studied and a blind algorithm to estimate symbol timing of the signals with unknown modulation type is presented
研究了載波同步和碼元定時同步與調制方式盲檢測演算法的關系；以自適應單載波中高階累積量調制方式盲檢測演算法為例，對于載波同步誤差引起的頻偏問題，提出一種基於頻偏穩健的mdpsk信號調制方式盲檢測演算法；對于未知調制方式信號的定時同步問題，提出一種盲定時估計演算法，該演算法可以估計mdpsk和mqam信號的定時同步信息，實現數字信號的同步分類；提出了一種基於調制方式盲檢測的自適應接收機結構，把調制方式盲檢測，信噪比估計和同步解調聯合起來進行，實現調制方式隨通道質量而自適應變化的信號的正確接收。 -
For ofdm communication systems in multipath environment, we introduce a symbol timing error estimation algorithm based on a new eqivalent system model. it works even in strong multipath environment and its computation cost is relatively small
針對ofdm同步問題構造了一種多徑環境下ofdm通信系統的簡化等效模型，並在此基礎上提出一種多徑通道下的ofdm定時偏差估計器。 -
Lastly, the ml criterion is used to analyze the nda timing offset estimation algorithms. two symbol synchronization methods that use feedback and feed - forward timing offset estimation algorithms are discussed and simulated. based on the ml criterion, chapter 5 analyzes some carrier recovery algorithms and proposes a nda frequency offset estimation algorithm
首先簡要介紹了載波同步參數的最大似然估計理論，在此基礎上對一些具有代表意義的載波頻差估計演算法進行了深入分析，並提出一種寬估計范圍、低實現復雜度的非數據輔助載波頻差估計方法。
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