調制解調線性 的英文怎麼說

中文拼音 [diàozhìjiědiàoxiànxìng]
調制解調線性 英文
modulation demodulation linearity
  • 調 : Ⅰ動詞1 （配合得均勻合適） harmonize; suit well; fit in perfectly 2 （使配合得均勻合適） mix; adju...
  • 制 : Ⅰ動詞1 （製造） make; manufacture 2 （擬訂; 規定） draw up; establish 3 （用強力約束; 限定; 管束...
  • 解 : 解動詞（解送） send under guard
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 解調 : demodulation; countermodulation; demodulating; decode; detect; [訊] restitution
  • 線性 : [數學] [物理學] linear; linearity線性代數 linear algebra; 線性方程 linear equation; 線性規劃 line...
  1. This paper takes the point of solving one of the main problems, i. e. having no steady fund source, which exists in the implementary of public housing system in xi ' an, as the incisive point. the paper analyzes and calculates the problem of fund deficiency in today ' s fund source channel and studies the method of solving the problem during the process of incorporating, using and managing in extant employee housing accumulation fund system in the towns. the paper also advances the ampliative accumulation fund system and builds up the corresponding operating model by adopting the mode of financing affiance, analyzes the investment method by using blurred linear programming and appraises its incremental effect

    本文以解決西安市廉租住房制度實施中存在的主要問題之一?無穩定的資金來源為切入點，在調研資料的基礎上，分析測算了目前的資金來源渠道存在的資金不足問題，同時研究了現存的城鎮職工住房公積金制度在歸集、使用和管理過程中存在問題的解決途徑，提出了擴大的住房公積金並採用金融信託方式構建了相應的運作模式，利用模糊線性規劃模型對其投資方式進行了分析並對其增值效果進行了評價。
  2. Under mixed culturing conditions, it was observed that bacterial number rapidly incre ; ised soon after the lysing of host cells. on the contrary, while the non - host cyanobacterium ( i. e. anabaena flos - aquae ) was incubated in the mix culturing system, the breeding of the bacteria could be inhibited. it may be suggested from the result above that cyanophage could bring about the changes in microorganism populations

    調查結果顯示， 19個採集的水樣中有6個含有裂解織線藻的噬藻體，而且水樣未經濃縮即能裂解宿主，說明噬藻體在淡水中分佈較廣泛，裂解性也較強；混合培養條件下的研究結果表明，噬藻體裂解宿主后，細菌數量快速增加，而當培養系統中有非宿主藻類存在時，細菌的增殖則受到非宿主藻的抑制，說明噬藻體可以顯著改變系統中微生物的種群結構。
  3. Compared to the analogy or the base - band sampling solution, this structure not only enhanced the system mobility, the flexibility and stability, but also reduced the cost, moreover it may be a public platform, which realize multi - purpose and multi - service patterns communication signal despread and demodulation, has fully reflected the thought of software radio

    與採用模擬或基帶采樣解擴解調方式相比，這種結構既增加了系統的機動性、靈活性和穩定性，同時價格大幅下降，而且可以作為一個公用平臺，實現多功能、多制式通信信號解擴解調，充分反映了軟體無線電的思想。
  4. Base on the study of long distance wireless communication channel characteristics, the thesis gives an analysis on the existing problems and proposes a solution : implanting the ofdm technique in communication system modulator

    本文從對無線遠距離移動通信通道的特性研究出發，分析了其存在的問題。然後針對問題提出了解決方案? ?採用ofdm技術來設計通信系統的調制器。
  5. Firstly, the airborne electromechanical system, the development of bus protocol, power line channel and power system are described in the dissertation ; secondly, the algorithm of qpsk and root raised cosin are discussed ; thirdly, the designation of the hardware and software of the modem board, based on qpsk, built up with dsp and cpld are given. the high - speed data transporting card of airborne electromechanical communication system, which is based on plc, are put forward in our country

    本文介紹了飛機電力線載波數據通信系統的結構，並對低壓電力線的通道特性進行了分析；對qpsk調制演算法及均方根升餘弦低通濾波演算法進行了詳細論證；設計出基於qpsk的調制解調模塊，並在此基礎上，研製出以dsp和cpld為最小系統的調制解調硬體電路板，開發了調制解調模塊電路板的應用軟體程序。
  6. Aiming at such problems in combustion system of homemade middle and miniature boiler, as a complex system with the character of dead zone, time variation, serious non - linearity, large time delay, coupling and a lot of disturbance, this paper presents a new set of optimal control resources. by using well - matched control method on system, stable automatic running is realized. having the serious divulgence coals difference a lot from each other in character, instability of chemistry, value of lowest emission of heat, home - made boiler controller is not at all ideal. instead of traditional model that controls the ratio based on proportional control or with the correct signal of the amount of oxygen, this paper, combined with intellect control theory - - fuzzy control and self - optimizing concept, propounded a kind of fuzzy self - optimizing controller to be used in air supplying system of the boiler, and expatiates on the idea of dividing the control process into two parts, dynamic and static to realize, thus meets the demand of homemade boiler economic running

    本設計針對國產中、小型電站鍋爐燃燒系統參數時變、嚴重非線性、干擾因素復雜、耦合嚴重、模型不易確定的特點，提出多變量協調控制方案，解決了系統可控性差，難以實現穩定自動運行的問題；在此基礎上，改變以往以煙氣含氧量控制送風的傳統模式，針對國產電站鍋爐設備主體及一、二次送風迴路泄露嚴重，煤種混雜、成分不穩定、燃燒發熱值低、燃燒效率不高等問題，應用智能控制理論中的模糊控制技術，結合自尋最優控制的思想，設計了一種模糊自尋優控制器，應用在電站鍋爐送風控制系統上，並闡述了動靜態兩種實現途徑，通過在線優化風煤配比，實現最佳經濟燃燒，切實保障了鍋爐的經濟運行。
  7. Established the system of coordinates of roll testing, getting the parameters of equation of tooth face by solving the non - linear equations set ; according to the differential geometry and meshing principle, deduce the curvature parameters of tooth face and tooth profile, and get the parameters of instantaneous contact ellipse. emulate the contact trace and contact area of the working tooth face, and drawing the instantaneous drive ratio error curve

    建立了克林貝格擺線齒錐齒輪嚙合分析的對滾模型，通過對非線性方程組的迭代求解，得到齒面方程的各個參數;由微分幾何和切齒嚙合原理推導了齒面上齒廓和齒線方向的曲率參數，得到了瞬時接觸橢圓的參數。根據設計參數和機床調整參數繪制了工作齒面的接觸軌跡和接觸區圖形，並求得了瞬時傳動比的誤差曲線。
  8. This thesis primarily makes below the work of a few aspects : ( 1 ) the method that measuring and solution of the control point ' s coordinate, calculation of the point, solution of intersection with polygons, and calculation the quantity of ore reserves in a drawing file by computer technology ; ( 2 ) the theory and the method to draw the diagram of the equivalent line by establishing the abnormal triangle net, and ore blending with the diagram of the equivalent degree ' s line ; ( 3 ) the principle and method to automatically divide the ore, and the method to adjust to the quantity of ore and search the ore ' s information ; ( 4 ) adoption the line program to beg to solve the problem to ore blending, and establish the linear programming model and the simplification model with ore blending. ( 5 ) establish the control model with ore degree based on modem control theories

    本論文主要完成了以下幾方面的工作： （ 1 ）利用計算機技術直接在一張現狀圖中，實現了控制點的測量與求解、坐標展點計算、多邊形求交以及爆堆礦巖量的計算； （ 2 ）提出了通過建立非規則三角網的方法來繪制等值線圖的理論和實現方法，通過等品位線圖指導配礦工作； （ 3 ）提出了配礦塊段自動劃分的原理和方法，並在此基礎上實現礦塊礦量調整和礦塊信息查詢； （ 4 ）採用線性規劃的方法求解配礦問題，建立了配礦問題的線性規劃模型和簡化模型； （ 5 ）建立了基於現代控制理論的品位控制模型。
  9. The improvements in the iaga contained adding strengthen operator, improving evaluation index of premature, etc. multi - phase homing project, making use of the flight properties of parafoil system in gliding and turning, was simple in control and facile in practice. based on frenet frame, the linear time - variable error equations of parafoil system were built

    基於frenet坐標系推導和建立了翼傘系統線性時不變的誤差方程，並運用「投影點」的思想來獲得frenet坐標系下偏差量的解析近似表達式，從而設計了用於翼傘系統航跡跟蹤的傳統pd控制器和增益調節型模糊pd控制器。
  10. The propagation and control of soliton in nonlinear kerr optical lattice with harmonic modulation of refractive index are investigated analytically and numerically in this paper. and some innovative research results have been worked out. the forming conditions of lattice soliton from gauss beam and the two modes of its stable propagation are obtained for the first time

    本文利用解析和數值方法研究了在具有橫向折射率周期性調制的克爾型非線性光學格子中孤子的傳輸和控制，做出了一些創新性的研究結果:首次得出了高斯光束形成格子孤子的條件和兩種穩定傳輸形式。
  11. Haken, the founder of synergetics, has used the oscillations of the parameters, which were called attention parameters in his nonlinear equations, to explain oscillations of perception. we introduce a logistic map subsystem to the art to create a vigilance - controllable mechanism. via it, the human ' s multi - fold ambiguous perception is successfully simulated. with the reciprocal development for decades in artificial intelligence ( ai ) and ann, the join up between them has become a great trend

    協同論創始人haken的理論將多義感知現象用非線性方程注意參量的振蕩來解釋感知振蕩，我們提出用邏輯斯諦映射子系統來產生art注意參數振蕩，從而成功地實現了用art模擬認知的多義感知現象，這也為art提供了一種控制與調節注意參數的機制。
  12. This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller

    本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。
  13. It is necessary in digital communication system that carrier recovery can compensate frequency offset and phase jitter brought by transmission and modulation. this paper is mainly focused on carrier recovery technique. we introduce the channel model at cable headed and receiving site. firstly, we introduce the principle of carrier recovery and give some algorithms of them, which are directed - decision, reduced constellation and frequency sweeping

    本論文緊緊圍繞著數字通信系統中的載波恢復技術，在介紹了有線通信系統所用的調制解調通道模型后，首先闡述了載波恢復技術的思想和基本原理，在此基礎上給出了三種載波恢復演算法，即判決導向演算法、簡化星座判決演算法和掃頻演算法，並且給出了其各自的模擬圖：然後深入研究了一種適合高階qam並且能糾正較大頻偏的載波恢復技術：極性判決演算法。
  14. 2 the electromagnetic compatibility ( emc ) of the new radio induction system is analyzed, this paper studies the affections for the new radio induction system excited by the conductive interference and radiated interference, this paper also studies the affection to the out - space environment excited by the new radio induction system. 3 this paper studies the applications in analog carrier communication for the new radio induction system from the mod - d

    2研究了新型無線感應系統的電磁兼容性，分析了傳導干擾對新型無線感應系統的影響，分析了輻射干擾對新型無線感應系統的影響；分析了新西南交通大學博士研究生學位論文第11頁? ? 3主要從調幅（ am 、 dsb 、 ssb ） 、窄帶調相（ nbpm ） 、窄帶調頻（ nbfm ）等調制解調中研究了新型無線感應系統在模擬載波通信中的應用並進行了模擬，研究了上述調制解調相應的解調增益。
  15. Based on this gateway, a 16kbps fh - gmsk wireless data transmission have accomplished. the arrangement of the thesis is below : chapter 1 gives brief description of software radio in the origin and development status and for the future chapter 2 introduces the theory related to software radio chapter 3 introduces the characteristic about wireless channel and some estimation way of channel chapter 4 introduces scheme of wireless data transmission. a 16kbps fh - gmsk wireless data transmission have accomplished, the mainly modem algorithm is done by dsp chapter 5 summary

    本文的結構安排如下：第一章對軟體無線電的由來、定義、發展狀況以及結構做了簡要的概述第二章介紹了軟體無線電相關的一些理論第三章介紹了無線通道的特性，及常用通道估計的方法第四章介紹了無線數傳的實施方案，在硬體平臺上實現了16kkbps的gmsk跳頻數傳，主要的調制解調演算法在ti的dsp上得到實現第五章總結和展望
  16. This paper divides into six chapters : the first chapter - base on the analyses of the origin, conception and development status of sr, this chapter discusses the key technology and realize difficulties of sr and advances the intention and meaning of the paper. the second chaptei - the sr system with radio frequency band - pass sampling architecture is a design scheme close to software wireless radio ( swr ), this chapter introduces three system architecture of sr system and analyses the theory of radio frequency band - pass sampling. the third chapter - this chapter analyses and designs the dsp hardware platform with radio frequency band - pass sampling architecture

    本論文分為六章：第一章在分析軟體無線電的起源、概念、發展概況的基礎上，闡述了軟體無線電的關鍵技術及實現難點，提出了本論文研究的目的與意義；第二章射頻直接帶通采樣軟體無線電結構是接近理想化的軟體無線電設計方案，本章對軟體無線電系統的體系結構及射頻直接帶通采樣原理進行了分析；第三章分析並設計了射頻直接帶通采樣結構軟體軟體無線電系統的dsp硬體平臺；第四章研究了調制解調及信號調制樣式的識別演算法並給出了dsp實現，這是在dsp平臺上實現軟體無線電功能的一種常規方法；第五章分析了應用快速原型技術開發軟體無線電系統的必要性及可行性，完成了軟體無線電系統的matlab模擬及結合ti公司的tms320c6711dsk板的快速原型實現，這也是本論文提出的軟體無線電的一種新的研究方法。
  17. The propagation of soliton and interaction for the periodic distributed amplification line are discussed in detail, and the explicit soliton solution on continuous wave ( cw ) background is presented, and two exact analytic solutions that describe the modulation instability and the soliton propagation on a cw background are in detail discussed, and inelastic interaction for the vector solitons is also investigated

    具體研究如下三個方面的內容：周期分佈放大系統中孤子的傳輸特性和相互作用；在非零邊界條件下孤子解的存在形式並解釋非均勻光纖中光脈沖的調制不穩定性以及孤子在連續波背景中的傳輸特性；討論多個光場同時在光纖中傳輸的耦合非均勻非線性薛定諤方程並詳細研究孤子間的非彈性相互作用。
  18. Chapter is the most important part in this paper, we used pulse position modulation ( ppm ) and maxim - likelihood demodulation to increase the power efficiency, improve the ber, also we used rs ( reed - solomon ) code to correct the bunched bit error because of the atmosphere scintillation. with the ppm modulation / ml demodulation method and rs code, the performance of the system improved to a new stage

    第四章是對無線光接入的調制解調和編碼技術的分析，也是本文的重點，比較了ppm調制和ook調制的帶寬和功率利用率、硬判決解調和最大似然解調對系統性能的改善，以及採用rs糾錯碼對系統性能的改善。
  19. This paper gives an overview on the development of wireless communication and the orthogonal frequency division multiplexing ( ofdm ) technique. basic characters of wireless channel, transmission principles and signal frame structure design of ofdm are introduced. main non synchronization factors between ofdm transceivers are pointed out

    本文介紹了無線通信與多載波正交頻分復用（ ofdm ）技術的發展概況，闡述了無線通道的基本特性、 ofdm的調制解調原理與信號幀結構的設計，指出了導致ofdm收發信機間不同步的主要因素。
  20. The characteristic of channel is the basic of plc research, including the transmission lines, channel noise, and attenuation. the ability of anti - jamming, speed and distance of transmission are decided by the mode of modulation. for example, the fsk, bpsk, cdma and ofdm are main modulations in the plc

    通道的研究是根本，電力線通信其他研究內容都是建立在通道研究的基礎上，內容主要包括傳輸線特性、通道噪聲和通道衰減等;調制解調技術決定了電力線通信的傳輸速率、傳輸距離和抗干擾能力，它是電力線通信實現的關鍵，目前電力線通信中主要的調制方式有fsk 、 bpsk 、 cdma 、 ofdm等。
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