空時發分集 的英文怎麼說

中文拼音 [kōngshífāfēnjí]
空時發分集 英文
sttd space time transmit diversity
  • 空 : 空Ⅰ形容詞（不包含什麼; 裏面沒有東西或沒有內容; 不切實際的） empty; hollow; void Ⅱ名詞1 （天空） s...
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 發 : 名詞（頭發） hair
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 集 : gatherassemblecollect
  1. In this section, applying the method, from abstract to specific and from history to present, it analyzes the operation mechanism of urbanization economy affected by market mechanism ; puts forward four theories of urbanization economy from economic perspective, including agriculture surplus and comparison advantage ; non - agricultural industry ; agglomeration economy and spillover effect, on this basis of the theories, it, on one hand, analyzes two kinds of internal mechanism in the chronologic operation of urbanization economies : increasing mechanism of urbanization economies in urban output industry ; and changing mechanism from specialization to integration, which are the representations of the evolution of " mart " development ; on the other hand, it analyzes two internal mechanism of dimensional operation of urbanization economy : internal spatial enlargement mechanism of urbanization economies from monocentric city to multi - center city, and external spatial enhancement mechanism which represents city - regionalization and city - chain connection, the later two mechanism represent the evolution of " polis " development

    這一部分，按照由抽象到具體和由歷史到現代的研究方法，分析了市場機製作用下的城市化經濟運行機理，從經濟學角度提出了農業剩餘與比較優勢、非農產業、聚集經濟、外溢效應四大城市化經濟定理；在此基礎上，一方面分析了城市化經濟運行沿時間增長的兩個內在內容提要機制:城市輸出產業的城市化經濟增長機制和從專業化到綜合化的城市性質變遷機制，它們主要表現為「市」發展的延續;另一方面分析了城市化經濟運行沿空間增長的兩個內在機制:從單中心到多中心的城市化經濟運行的內部空間擴展機理和表現為城市區域化、城市連綿體的城市化經濟運行的外部空間擴展機理，它們主要表現為「城」發展的延續。
  2. Three - dimensional high - density space / time soundings serve as the main body of data consisting of 3 - hr interval doppler probings, 10 - 30 min rainfall intensity, surface raindrop sizes sampling and gps - guided flight cloud physics detections with output taken at 2 - sec and 200 - m intervals. and specific systems associated therewith are developed for multiple - way communication and data collection and storage, a platform for analysis, retrieval softwares for dominant items and multi - scale cloud models - all constitute a system of techniques for meso to microscale observations and analysis. 2 ) atmospheric water resource and macroscopic rainfall properties in dry periods of spring and autumn of the target region

    以加密觀測的多普勒雷達、 3小時探空、 10 30分鐘雨強、地面雨滴譜等間隔取樣及在gps引導下的飛機雲物理探測等獲取的三維高時空密度的綜合探測為主體；配合專項設計開發的多路通訊採集存貯系統、多類信息的分析處理平臺、主要觀測項目的分析反演軟體，結合多尺度雲系模式，綜合構成層狀雲系中微尺度探測和分析處理技術方法。
  3. The subjects of tourist development are not distinct and prominent. in the light of this point, taking man - land relationship as the guiding thoughts, and taking topography, geography of tourist and cultural geography as theoretical basis, using the methods of material collection indoors and outdoors and exploration, the author dig karst culture in the following aspects : the contents, the formation, the character, then make a comparison of difference in space and time and the accumulation of space and time

    考慮貴州旅遊開發文化主題不鮮明等因素，以人地關系為指導思想，巖溶學、文化學、旅遊地理學、文化地理學等為理論依據，應用室內資料收集和室外資料收集和踏勘方法，研究喀斯特文化的形成、內容和特徵，對比分析喀斯特文化在時間、空間的分異及其時空的沉積等。
  4. Comparing with the system which does not space - time code, space - time coding can obtain transmit diversity and increase channel capacity without frequency bandwidth loss

    與空間未編碼系統相比，空時編碼可以在不犧牲帶寬的情況下起到發射分集和提高功率增益的作用。
  5. In a book written by an electronics expert who once participated in the us star wars program, the author discussed his findings in his studies on several fallen ufos unidentified flying object. according to him, ufos do not look very big from the outside, but after entering them, one might spend twenty minutes walking without reaching the opposite end due to a conversion of time and space. unlike an aircraft cockpit with dashboards and maneuvering devices, the ufos have only a few seats, surrounded by walls which themselves serve as jumbo tv monitors

    他在對多種墜落的幽浮外星人飛行器考察研究時發現，從外面看幽浮並不很大，但進去后卻走二十多分鐘走不到頭時空轉換，而且裏面沒有像飛機駕駛艙內那樣眾多的儀表及操縱裝置，只有幾個坐椅，四周的墻壁就是大屏幕觀測電視，內部也沒有復雜的集成電路，只有大的晶體塊，整個飛行器完全是在外星人頭腦發出的電磁波控制下運行。
  6. At the same time, to achieve space, time and frequency diversity, some research is done on stf technology, which joints transmit diversity and ofdm technology

    同時對發射分集技術和ofdm相結合，通過適當的編碼技術來獲得空、時、頻分集的空時頻編碼技術進行了一定的研究。
  7. The data acquisition of the pet has several kind of mode. there are deferent mode divided by deferent standard. there are empty scan, trans - scan and emission scan. the emission scan could be divided into 2d and 3d by space and be divided into static scan, dynamic scan, gated scan and whole body scan

    Pet的數據採集有很多種工作方式，從不同的角度有不同的劃分方法，例如我們從臨床角度將採集模式分為：空白掃描、透射掃描和發射掃描。發射掃描又可從空間上分為2d和3d方式；從時間上分為靜態掃描，動態和門控採集，此外還有全身採集。
  8. With the development of vlsi ( very large scale integration ) and ulsi ( ultra large scale integration ), rtp ( rapid thermal process ), which consumes less time and less energy than classical thermal treatments, have been widely employed in semiconductor manufacturing. however, the most importance is that rtp is applied for defects engineering of silicon material. it is generally believed the rtf leads to the injection of additional vacancies into silicon wafer, and then a so - called magic denuded zone ( mdz ) in the near - surface region of cz silicon wafer was formed by controlling the vacancy distribution

    隨著大規模集成電路（ vlsi ）和超大規模集成電路的發展，節省時間、節省能量、容易控制的快速熱退火工藝在半導體器件製造工藝中得到了廣泛的應用，並且在硅材料的缺陷工程中發揮了特殊的作用，人們通過高溫快速熱處理在矽片中引入空位，並控制空位的分佈，進而形成了具有較強內吸雜能力的潔凈區。
  9. The newly developing transmit diversity and space - time codes are just one of the most important schemes to improve wireless spectrum efficiency

    而近年來提出的發射分集和空時碼就是能夠有效提高無線頻譜利用率最重要的方案之一。
  10. Space - time coding for transmitting diversity

    發射分集中的空時編碼技術
  11. Space time coding was proposed by combining transmit diversity and coding technology to improve the system performance, such as error bit rate, data rate, and system capacity. in particular, space - time block coding ( stbc ) schemes, proposed originally by alamouti were adopted by the 3g standardization committees as one key technique in 3g wireless systems

    將發送分集與編碼調制技術相結合，進一步產生了空時編碼技術，由於空時編碼技術具有優異的抗衰落性能，並且能通過發送分集和接收分集提供高速率、高質量的數據傳輸，因此它已經成為第三代移動通信技術的重要組成部分，並將繼續在下一代移動通信技術的發展中發揮重要作用。
  12. Performance analysis of space - time transmit diversity techniques for multi - antenna wcdma systems

    系統空時發送分集技術的性能分析
  13. It is proved that the proposed design framework subsumes many of the existing capacity lossless and full - diversity space - time codes

    證明了許多已發現的容量無損滿分集度空時分組碼均為該方法的特例。
  14. Because of the affection of noise and signal fading, in order to high data rate access and high quality, wireless communication need new technology to improve the link reliability and enhance the spectrum efficiency. mimo ( multiple input and multiple output ) can enhance the spectrum efficiency and increase channel capacity greatly, and reduce the multipath affection without spectrum band and power increasing. the 3th generation mobile communication wcdma is coming, with the purpose of putting mimo, stbc ( space time block coding ), space diversity into practice of wcdma systems, in order to lay the foundation of 3g toward 4g, this dissertation has done some research under this background

    在發射機和接收機使用多個天線進行數據傳輸的多輸入多輸出（ mimo ）技術，可以在不增加帶寬和天線發送功率的條件下，成倍的提高頻譜利用率，提高系統的通道容量，還可以抗多徑干擾。第三代移動通信wcdma即將到來，為了將多天線技術（ mimo ） ，空間分集技術，空時編碼技術用到wcdma系統中去，為第三代移動通信向第四代移動通信系統平穩過渡奠定一定的基礎，需要做一些理論上的研究。
  15. In chapter 6, we presents a novel transmit diversity scheme - space - time variable correlation ( stvc )

    第六章對一種新穎的發送分集方案?空時變相關碼stvc進行了研究。
  16. Space - time block coding is a new technique that combines coding, modulation and transmit diversity. it has been an ideal candidate for improving wireless communication performance and increasing data rates in systems with bandwidth constraints

    空時分組編碼是將編碼、調制和發射分集技術結合起來的一種新興技術，它是改善無線通信性能、提高帶限系統數據速率的一種理想的選擇。
  17. In the chapters concerned with the space situation, the author not only makes an conclusion on the characteristics of the space situation of chinese tourism web sites but also analyses the elements leading to its space distribution. after making a detailed research on the leading effect of the chinese tourism web sites and mainland tourists, the author forecasts the space evolution of chinese tourism web sites and makes a conclusion that chinese tourism web sites will develop from hierarchic system to web system and a conclusion that it will be centralized on the basis of separation

    在中國旅遊網站空間態勢的研究中，基於在yahoo搜索到的基本資料上，作者不僅總結了中國旅遊網站的空間分佈特徵，也探討了導致其空間分佈差異的因素，並且深入地研究了中國旅遊網站與國內遊客的導引作用，對中國旅遊網站的空間演變進行了預測，得出了中國旅遊網站的發展將會由等級體系向網路體系發展，同時在分散的基礎上也會有集中的結論。
  18. In chapter 8, the research work is summarized ; the existing problems are pointed out. in the meanwhile, the developments of transmit diversity and space - time coding techniques in the future are prospected

    第八章對研究工作做了總結，分析不足：同時，還對發送分集和空時碼今後的發展應用進行展望。
  19. This thesis focuses on transmit diversity and space - time coding techniques and their implements to the 3rd generation ( 3g ) mobile communication systems especially in wcdma. the main contents are as follow : chapter 1 is an introduction of the application background of transmit diversity and 3g standards, and also presents the proposed transmit diversity schemes in wcdma and cdma2000 briefly

    本文主要研究的是發送分集和空時碼技術和其在第三代移動通信系統主要是wcdma系統中的應用，主要內容如下：第一章首先簡單介紹發送分集的應用背景和第三代移動通信系統，並專門對wcdma和cdma2000中的發送分集方案做了說明。
  20. This dissertation introduced the development of mobile communication firstly, then given out the key technology of next generation communication, discussed the promising diversity technology. mimo and stbc is given out in the next chapter, simulation results proved the benefitial of mimo and stbc. some channel estimation methods are introduced subsequently, the channel estimation method based on orthogonal design is proved better than ls ( least square ) algorithm

    本文就是以這一背景而展開的。本文以移動通信發展的歷程為開端，介紹了下一代移動通信中的關鍵技術，重點介紹了將會得到廣泛應用的分集技術，接著給出了下一代移動通信系統中將廣泛應用的mimo技術和空時編碼技術，模擬結果證明了該技術將會帶來顯著的性能增益。
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