division communication system 中文意思是什麼

division communication system 解釋
區段電話
  • division : n 1 分，分開，分割；分劃，區分。2 分配；分派。3 分裂，（意見）不一致，傾軋。4 區域；〈英國〉選區...
  • communication : n. 1. 通訊，通知；交換；信息；書信，口信，通報。2. 傳達，傳授；傳播；傳染。3. 交通，交通機關；聯系，連絡（設備）。4. 【宗教】接受聖餐。
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. The smart antenna, which is adapted in the wireless mobile communication system, in fact, forms an antenna with a high gain. thus communication in all directions can be proceeded, then base station antenna coverage, system capacity and service quality are improved, also inter - symbol interferes and multi - access interfere are reduced. the space division multiple access ( sdma ) is introduced, and users can be distinct from each other through their special location

    在無線移動通信系統中採用智能天線技術，實際上是通過數字信號處理，使天線陣為每個用戶自適應地進行波束賦形，相當于為每個用戶形成了一個可跟蹤它的高增益天線，從而即可以進行全方位通信，也可以用較小的發射功率覆蓋相同的范圍以及提高系統容量和業務質量、降低用戶間的碼間干擾和多址干擾。
  2. The fiber raman amplifiers ( fras ) are more and more attractive for its particular virtues such as on - line, wide band, and low noise etc, and they are very fit for dense wavelength division multiplexing ( dwdm ) system of next generation charactered by its super large capacity and long transmission distance. fras are unsubstitutable in the fields such as optical fiber communication over the ocean, long haul transmission and exploitation of the entire low - loss band of fiber

    光纖拉曼放大器因其特有的在線、寬帶、低噪聲等特點而越來越被人們關注，是一種非常適合下一代超大容量、超長距離dwdm系統的光放大器，尤其是在海底跨樣光纖通信、超長距離光纖通信以及開發整個光纖低損耗窗口等方面有著不可替代的優勢。
  3. Automatic control system in the production of jin liquor refers to rational unit division and allocation of the main processing procedures such as the extraction of efficient components from herbs, production materials distribution, liquor aging, filtration and filling etc. and all the production units are computer - controlled and network communication has realized automatic control

    摘要對保健酒生產過程中中藥材有效成分的提取、物料調配、陳釀、精濾和灌裝等主要工序進行合理細分單元和配置，科學地對生產單元的管理採用計算機控制系統和網路通訊技術進行自動控制。
  4. Ielts （ the international english language testing system ） is the major test for people who intend to study or work where english is the language of communication. based on the latest estimation from the educational and cultural division of british council ， there will be over 200 ， 000ieltstest takers in china in the year of 2007

    雅思是目前出國留學移民的主要英文考試項目，據英國總領館教育文化處最新估計，今年全國將有超過20萬人次參加雅思考試。
  5. Construction objective ： within 3 years, it aims to build a core zone of chongqing northern business and trade center with a rational function division, completed infrastructure, well - organized communication system, beautiful ecoenvironment, based on the development of business and trade as its leading role, pedestrian mall as its carrier, retail / whole sale as its base and shopping / leisure activities as its theme

    建設目標用三年時間，建成一個功能分區合理、基礎設施配套、步行系統完善、交通組織暢達、生態環境優美，以商貿發展為主導、以步行街區為載體、以零售批發為基礎、以購物休閑為主題、以都市景觀為標志的重慶北部商貿中心核心區。
  6. On the other hand, cdma ( code - division multiple access ) communication system has been widely considered as the mainstream of 3g communication system, because it has the good qualities such as high utilization ratio of frequency band, low transmission power, powerful anti - multiple path falling and flexible capacity

    另一方面， cdma通信系統以其高頻譜利用率、低發射功率、強抗多徑衰落特性、軟容量等優點，已被廣泛認為是第三代移動通信系統的主流。
  7. Code - division multiple - access ( cdma ) technology has become the main technology studied in the personal communication service ( pcs ) recently because it has lots of benefits, such as large system content, high voice quality, easy frequency scheme, low cost of the net making and so on

    碼分多址技術因其具有系統容量大、語音質量高、頻率規劃簡單、建網成本較低等眾多優點，已成為近年來個人通信業務中研究的主要技術。
  8. Cdma ( code division multiple access ) is a promising technology for future mobile communication system because of its several features with which other multiple access technology can not compare : higher efficiency of frequency allocation, robust anti - multipath effect, macro diversity, mitigating interference, soft capacity, low power, soft handoff, simple frequency design, easy access, and so on

    碼分多址接入（ cdma : codedivisionmultipleaccess ）方式以頻譜利用率高、抗多徑、抗干擾、軟容量、低功率、軟切換、宏分集、頻率規劃簡單、用戶接入方便等其它多址技術不可比擬的優越性被認為是未來移動通信系統的理想接入技術之一。
  9. The technology of direct sequence spread spectrum / code division multipul access ( dsss / cdma ) are applied in the broadband code division multiplex wireless communication systems, which means transmitting data at the rate of 2. 048mbps using four e1 lines within the band of 20mhz. in this paper, the theory of the whole debice is first analysized specified for the system asic design and optimizing its performance

    寬帶碼分復用無線傳輸系統是採用直接序列擴頻/碼分多址（ dsss / cdma ）技術，在20mhz頻帶內實現四路2 . 048mbps的e1鏈路數據速率的無線傳輸。本文首先分析了整個數傳設備實現原理，針對系統asic設計和優化整機集成性能出發，提出並實現了基於fpga控制pm4314e1晶元的介面模塊完成對e1鏈路信號的監控和告警功能的改進方案。
  10. Since most of the 3g systems are evolved from different incompatible 2g systems like cdma code division multiple access, gsm global system for mobile communication and tdma time division multiple access, therefore the imt - 2000 standard will ensure the compatibility and interoperability of different systems in 3g. 3g is broadband and packet - based

    由於大部份3g系統是由多種不能兼容的2g系統，如碼分多址code division multiple access ，簡稱cdma ， gsm及時分多址time division multiple access ，簡稱tdma制式演進過來的，因此， imt - 2000標準是要保證3g系統所包含的各種程式的兼容及互用性。
  11. Civil air defense alarm system was a system to dispense antiaircraft alarm sig - nal, hand hostile air attack informational communication to urbanite at wartime. it is a particular informational communication system of the civil air defense depart - ment, and can not be taken place. at the development trend of digitaliza - tion, unitization, integration of civil air defense communication, the civil air defense alarm system is developing too, for adaptation to the require of both future war and peaceful dual, and enhancing civil air defense communication system ' s directing automation. in recent years, development of different kinds of communication technology infuses new clearly energy into communication, especially spread spectrum communication, because of its strongly interference - free feature, invisibility best, realizable code division multiple access and antimultipath wane and so on merit, gets extensive use at wireless region ; the corresponding spread spectrum chips emerge as the times and get boom, which provides advantag e to realization of the circuit of spread spectrum communication. at the same time, in company with the advance of electronics level, the single chip microcomputer has a great development, world renowned chip manufacturer pushout respective products one after another, the kinds of which are too many to statiste

    在人防通信的數字化、一體化、綜合化必然的發展趨勢下，人防警報系統也不斷發展，以適應未來戰爭和和平時期的雙重需要，提高人防通信系統指揮自動化。近年來，各種通信技術的發展給通信注入了活力，擴頻通信更因其抗干擾能力強、隱蔽性好、可實現碼分多址和抗多徑衰落等優點在無線領域得到了廣泛應用；其相應擴頻處理晶元應運而生並得到迅速發展，這為擴頻通信的電路實現提供便利。同時隨著微電子工藝水平的提高，單片微型計算機有了飛躍發展，世界上著名的集成電路晶元製造商紛紛推出各自的產品，單片機型號之多，已達到難以統計的地步。
  12. Optical code division multiple access ( ocdma ) is a communication mode which introduces the code division multiple access ( cdma ) technology into optical fiber communication system. besides providing asynchronous communications access, ocdma system has many advantages, such as high capacity, security against interception, suppression of narrow band disturbances, capability in forming variable bit rate networks and multi - rate networks. it implies a great challenge for the development of future communication networks, especially all optical networks

    光碼分多址（ ocdma ）是將碼分多址（ cdma ）技術與大容量的光纖通信技術相結合的一種通信方式，其主要優點表現在如下幾個方面：允許多個用戶隨機地接入同一通道：可構成真正「透明」的全光通信網路；具有良好的安全性；允許可變速率或多速率傳輸，並可同時提供多種業務支持；具有優良好的抗干擾能力，並能夠充分地利用石英光纖的可用帶寬。
  13. This paper discusses the work that we have done about the ( cd ) 2ma ( chaotic digital code - division multiple access ) communication system, whose performance is desirable

    本文論述了我們在研究性能優良的混沌數字碼分多址通信系統方面所做的工作。
  14. As the development of wavelength division multiplexer and demultiplexer in optical communication system, the requirement for high performance of resolution elements and integrated circuits make integrated optics and waveguide theory the hot spot for research

    隨著光纖通信領域中波分復用技術的飛速發展，對各種高性能的分離光學元件和集成光學元件的市場需求，使得集成光學和光波導理論成為了該技術領域的熱點研究課題。
  15. In this paper, firstly the origin and research significance of the project were introduced, the general design of the rtmaad system wes introduced as follow. then, we discussed and analyzed in detail the rtmaad system " s key technologies such as digital signal processing and wave division multiplexing of optical fiber communication system, etc. lastly, engineering " s realization of the rtmaad system was introduced

    本文首先介紹了課題的來源及研究意義，接著介紹了rtmaad系統的總體設計，然後詳細分析和論述了本研究項目的關鍵技術：數字信號處理技術和光纖波分復用技術等，最後介紹了rtmaad系統的工程實現。
  16. The communication system of differential code division multiple access and key technology

    差分型碼分多址通信系統及相關技術
  17. Spread spectrum code division multiple access technique ( ss - cdma ) has successfully been applied in the second generation mobile communication system, such as is - 95. moreover, the main technique of the third generation mobile communication system is also based on cdma

    擴頻碼分多址已成功地應用於第二代移動通信中，如is - 95 ，而且第三代移動通信的主要方案也都是基於碼分多址cdma ，因此cdma技術具有無可爭辯的競爭力。
  18. Cdma ( code division multiple access ) technology is used in communication system abroad because of its merit, people use cdma technology to transmit data, image and also other different information in different sub - frequent bands of a broad channel. so a research, which combines multi - carrier signal processing and cdma technology and processes different sub - frequent bands signal at same time, is full of practicable value

    Cdma技術由於其優點被廣泛採用在通信系統中，人們在一個寬帶通道的不同子頻段上使用cdma技術傳輸數據、圖像等不同信息，所以將多載波信號處理與cdma技術聯系起來進行研究，並且同時將不同的子頻帶信號進行處理是一個很有實用價值的問題。
  19. In next mobile communication system to suffice more and more high - speed data service and demand of qos ( quality of service ) many new wireless link layer transport technologies are going to be used such as mimo ( multiple input multiple output ), ofdm ( orthogonal frequency division multiplexing ), channel coding and acm ( adaptive coding modulation ) etc. low density parity check ( ldpc ) codes were first discovered in 1960 ’ s which belong to linear block codes with their parity matrix being sparse

    下一代移動通信系統為了滿足移動用戶對高速、寬帶數據傳輸業務不斷增長和更高服務質量的要求，採用了許多新的無線鏈路傳輸技術，包括多天線發射和接收技術、正交頻分復用技術、通道糾錯編碼技術和自適應編碼調制技術等。上世紀60年代提出的低密度校驗碼，是一種校驗矩陣為稀疏矩陣的線性分組碼。
  20. Orthogonal frequency division multiplexing ( ofdm ) has been widely used in many systems such as digital audio broadcasting system ( dab ), digital video broadcasting system ( dvb ), high definition tv ( hdtv ) and wireless local network. ofdm will be critical technique in broadband wireless mobile communication system in future

    正交頻分復用（ ofdm ）技術已經被廣泛應用於數字音頻廣播、數字視頻廣播、高清晰度電視、無線局域網等系統中，在未來的寬帶無線移動通信系統中， ofdm也將是一項必不可少的技術。
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