延展通信系統 的英文怎麼說
中文拼音 [yánzhǎntōngxìnxìtǒng]
延展通信系統
英文
extensive communication system-
The former part, with the analysis and research of the meaning and the extension and the characters of industrial design, demonstrates the possibility and inevitability of applying computer and internet to aid industrial design and illustrates the state - of - the - art and usual technology. by analyzing the new development and new requests of caid ( computer - aided industrial design ) technology, the article raises the possibility and inevitability of developing internet - based icaid ( intelligent caid ) system, presuming the models and methods and illustrating the key technology of building iicaid, which includes extracting the knowledge of design and the knowledge of user and building the correlative model and studying and developing internet - based cooperative work of form design and the design and realization of software and hardware of iicaid system. finally with analyzing and summing up the correlative knowledge of design and the knowledge of user in nc machine tools form des ign and concluding and researching the results of the correlative experiments, the article raises and explains the researching points and key technology
論文分為上下篇，上篇通過對工業設計內涵、外延的分析和研究，提出了運用計算機、網際網路等智能機器、信息技術輔助工業設計的可能性和必然性以及目前的發展狀況和一般技術；分析了目前caid技術的新發展和新要求，提出了發展基於網路的智能化caid系統的可能性與必然性，並大膽推測了實現的方法和模型；歸納建立iicaid系統所需的關鍵技術，即工業設計的領域知識和用戶知識的提取及建立模型；網路協同造型設計的規劃、集成和優化；系統的軟硬體設計和完成；最後，通過對數控機床造型設計相關領域知識的分析和整理，以及相關的實驗的總結和研究，提出和解釋了在數控機床造型設計中運用iicaid技術的研究重點和關鍵技術。As far the trend of fiber - optic communication systems is to obtain higher capacity, and higher transmission speed. the intensity modulator is widely applied to a lot of fields. it is necessary for the intensity modulator subject to the laser pulse rectification systems that should be provided with following performances as high speed signal transmission and quick response and so on
光纖通信向著大容量、高速寬帶方向發展，光纖延遲線系統要求強度調制器具有高速信號傳輸、快速響應的特點，因此以linbo _ 3為襯底材料的集成光學強度調制器具有十分良好的應用前景。On the basis of analyzing the inside meaning and outside postpones of the concept inner financial risk this thesis elucidate the development process of internal control and bring up the definition of internal control. the definition is that internal control is a system to guarantee reasonably the performance of unit operates activity, dependability of finance report and following of laws. it pierce through in all processes of operating the activities, such as control environment, risk valuation, control activities, information and communication and direct etc. these factors suffer board of directors, management stratum and other personnel of the business enterprise influence
本文在分析了企業內部財務風險概念的內涵、外延及其防範的基礎上，本著以防範財務風險為目的進一步詳細研究了內部控制問題，闡述了內部控制的發展歷程，提出了關于內部控制的定義：內部控制是為合理保證單位經營活動的效益性、財務報告的可靠性和法律法規的遵循性，而自行檢查、制約和調整內部業務活動的自律系統，它貫穿于經營活動的全部過程，包括控制環境、風險評估、控制活動、信息與溝通、監督等要素，並受企業董事會、管理階層及其他人員影響。This design could be used in anti - lost children system, being made up of involved gps positioning technology 、 monitoring system 、 computer technology and modern communications technology, which will have objective extensibility and development prospects
本設計綜合運用了gps定位技術、監控系統、計算機技術和現代通信技術，可以有效的運用在防兒童走失系統中，並具有一定的延伸性和發展前景。But the spectrum efficiency of the traditional ofdm system is limited due to variance of channel parameters such as channel response and rms delay spread
但是，決定通信系統調制參數的通道響應和rms時延擴展由於物體的運動或者環境的變化而動態變化，傳統的靜態確定ofdm系統調制參數的方法的頻譜效率不夠高。The real - time automatic gain control makes full use of the delay feature of signal channel, and controls the synchronization of adc precisely, and adjusts the signal gain in real - time, and compensates the error in digital domain, at last, this kind of technology expands the dynamic range of system adc
採用的實時自動增益控制電路利用信號通路的延遲特性，精確控制模數轉換器同步，實時調整信號增益，在數字域補償誤差，擴展系統動態范圍。By a streaming system, surveillant can see the surroundings of a remote places at any time, some colleagues in different locations can have a conference just like they were sitting face to face, people can watch live program of some games through the network, or see a doctor in their home, and so on. the application of streaming media is only at its beginning, it is stretching to many fields
在流媒體應用系統中，監控者可以隨時實時地觀看到異地的情況，相隔很遠的同事可以象身處同一個辦公室一樣召開會議，可以通過網路觀看現場直播，醫生可以給遠方的病人看病… …網路流媒體的應用才剛開始，它正延伸到生活中的方方面面，隨著信息技術的不斷發展，流媒體應用將深刻地改變人們的生活。Simulator presented in this paper provides a direct interface for the test of shortwave communication system, which well represents various features of hf channel such as multi - path delay, rayleigh fading, doppler shift, doppler spread, gaussian noise and impulsive interference, etc. in order to realize the channel simulation for the intermediate frequency signal, we, inspired by the idea of soft - defined radio, bring forward a new design method that the channel simulator consists of several dsp chips
本文研製的模擬器提供介面直接對短波通信系統進行測試，能夠全面反映短波通道的多徑時延、瑞利衰落、多普勒頻移、多普勒擴展、高斯噪聲和脈沖干擾等特性。為了實現對中頻信號的通道模擬，開發出一個結合軟體無線電思想的由多個數字信號處理晶元構成的短波通道物理模擬器。For the multipath delay spreading problem existing in the mobile communication systems, a parallel quadrature am data transmission system with a number of overlapping subchannels is investigated
摘要針對移動通信系統中存在的多徑延時擴展問題，研究了一種具有很多相互重疊子通道的并行正交調幅數據傳輸系統。But the performance of the mimo system has deep relation with the properties of the multi - path signal in that environment, particularly affected by the correlation, the time spread and the azimuth spread of each path. therefore, in order to achieve potential huge capacity of the channel, gain prospective performance, choose appropriate system configurations and design excellent algorithms for signal processing, it is very important to realize and master the characteristics of channel in the indoor and the outdoor environment
而多入多出系統的性能，在很大程度上跟所處環境的多徑信號性質有關，特別與各條路徑之間的相關度、時延擴展和角度擴展有很大的關系，因此，了解和掌握戶內和戶外環境中無線多入多出通道的特徵，對實現潛在的巨大通道容量、取得預期的性能、選擇合適的系統結構和設計優良的信號處理演算法至關重要。分享友人