空時塊碼 的英文怎麼說

中文拼音 [kōngshíkuāimǎ]
空時塊碼 英文
stbc: space time block coding
  • 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...
  • 塊 : 名詞（古時佩帶的玉器） penannular jade ring （worn as an ornament in ancient china）
  • 碼 : Ⅰ名詞（表示數目的符號或用具） a sign or object indicating number; code Ⅱ量詞1 （指一件事或一類的...
  1. The motion - based layered compression scheme in this dissertation is different from the traditional full picture - process method, using different encoding strategy by classify marcoblock in temporal motion, a high encoding efficiency is achieved in experiment

    本文提出的基於運動的分級壓縮演算法，打破了以往時空伸縮全幀處理的概念，實驗中以塊為單位按時間頻率分等級，分別採用不同的編碼策略，達到較好的編碼效率。
  2. For video codec, after analyzing and researching the newest standard h. 264, an efficiency algorithm was proposed in this paper using self - feature, spatial correlation and temporal correlation to judge the encoding mode of one macro - block. through this method, the best prediction mode can be obtain before encoding, then, the coding time can be reduced dramatically with a little expense of bit - rate. for video transmission, in this paper, a transmit method was proposed using tcp / ip protocol under the environment of local networks

    首先，在分析及研究最新的視頻編碼標準h . 264的基礎上，利用宏塊自身的特點和其時間、空間的相關性來判斷宏塊應該採用的編碼模式，從而提前得到該宏塊的最佳編碼模式，新方法有效地克服了原標準演算法中窮舉式的復雜演算法，在壓縮碼流只有少許增加的情況下，大幅度地提高了幀內及幀間編碼的速度。
  3. Based on the preliminary knowledge of color coordinate, color space and color difference, in chapter 4, we focus on the image preprocessing, that is the gamut mapping between the color paper and the crt displayed image. color correction and its realization of our lcos digital image print head are also given in this chapter

    在第四章，我們重點研究的用於數碼沖印的顏色校正模塊及其實現，這一部分在簡要介紹色坐標與顏色空間，色差計算公式的基礎上，將重點放在數碼彩擴機目標色域以及源色域色域映射方法，密度計密度空間以及色度空間映射關系，即時色度與密度空間的關系等的研究。
  4. Space - time codes can be divided into tree mainly parts : bell layered space - time architecture ( blast ), space - time trellis codes ( sttc ) and space - time block codes ( stbc ). in this paper, we mainly compare the performance of blast and stbc in many aspects, such as design criterion, transmission rate, diversity gain, diversity combining, bit error rate and channel capacity etc. in this paper, we first respectively analysed the instantaneous received symbol energy - to - noise ratio of v _ blast in the diversity combining methods of maximal ratio combining ( mrc ), equal gain combing ( egc ) and selective combing ( sc )

    Mimo技術核心是空時編碼（ stc ） 。空時編碼主要分為三種:分層空時碼（ blast ） 、空時格碼（ sttc ）和空時塊碼（ stbc ） 。本文主要對分層空時碼和空時塊碼這兩種編碼方式在設計準則、傳輸速率、分集增益、接收合併、比特差錯率和通道容量等方面進行了較為詳盡的研究。
  5. The software system of smart spaces distinguishs ifself from traditional distributed systems in that : 1 ) they should deliver functionality in our everyday world, which is a complex and dynamic changing environment ; 2 ) the system will consist of many wireless networked devices, while wireless connection is prone to transient failure ; 3 ) the interaction points for the people are distributed and multimodal, which imposes tight temporal constraints on the messaging between related modules ; 4 ) modules coming from diversified domains need to cooperate, which raise the need for an abstraction model at a proper level for the construction of the system

    智能空間系統具有區別于傳統分散式系統的新特徵： 1 ）背景環境是復雜、動態的物理空間，新的模塊可能隨時進入和離開； 2 ）存在大量無線聯網設備，而無線網的一個典型特徵是暫時性故障頻繁； 3 ）系統的交互點是分佈和多模態的，相關的模塊間消息的時間關系要求嚴格； 4 ）各種不同應用領域的模塊都可能需要交互協作，同時需要考慮對遺留代碼的包容性。
  6. This thesis presents a new solution called the smart platform, which better tackles the problems by : 1 ) a runtime environment discovery mechanism which allows a new device to automatically find and join the runtime environment ; 2 ) the loose coupled publish - subscribe inter - module coordination model, which caters for the spontaneous interaction between modules ; 3 ) a global - local two - layer runtime environment structure. the transient failure of the wireless network can be recovered at the local environment layer. the asynchronous nature of the interactions in the < wp = 8 > publish - subscribe model also prevents modules from blocking on the transient network failure ; 4 ) distinguishing two classes of communications with different qos requirements, the message - oriented and the stream - oriented

    本文提出並實現了smartplatform ，其特點是： 1 ）運行環境發現機制，使外來計算設備可以自動加入軟體平臺的運行環境； 2 ）松耦合的發布/訂閱式模塊間協調機制，模塊間關聯可以自發組織； 3 ）局部全局的兩層運行環境組織策略，無線網頻發的暫時故障可以在計算設備的局部運行環境層次被屏蔽掉；同時發布/訂閱模型的異步性也使得模塊不會因網路故障而阻塞； 4 ）區分智能空間中的兩類不同的通信需求面向消息的和面向流的，並分別為它們提供了優化的通信層支持； 5 ）基於多agent抽象模型，為整合不同應用領域的模塊和遺留代碼提供了有力工具。
  7. Under rayleigh fading channel, we also simulated and compared ber in siso 、 simo and mimo systems. secondly, based on careful study the ber and the channel capacity under white noise channel under mpsk modulation when the channel is rayleigh fading, we duduced the expressions of stbc ’ s ber and channel capacity under rice and nakagami fading. and also analysed the performances through numerical simulation using matlab to testify the exactitude of the dudeced expressions. finally, there exists an error floor of stbc through studying on its performance on time - selectiv fading channel. we analysed the reason and proposed two new decode combination scheme to eliminated the error floor and the performance of stbc on time - selective fading channel is improved. and also compared the two scheme ’ s complication and snr gain

    這些結果大部分是閉式結果，能比較準確地衡量空時塊碼的性能，並對不同衰落的性能做了相互比較，其結果對空時塊碼的實際應用具有一定的指導意義。實際的通道是時變的，分析了空時塊碼在時間選擇性衰落通道中產生誤差地板效應的主要原因是存在碼間干擾（ isi ） ，在此基礎上提出了兩種能消除誤差地板效應的譯碼合併方案，並對這兩種方案的復雜度和信噪比增益進行了比較。
  8. This system presents us various kinds of user interfaces ( such as thin - client ui ), further more, to facilitate further research and provide a scientific foundation to ensure flight safety and daily monitor, other extended interfaces ( including network interface, data analysis interface, decode interface and etc ), are also provided by the system

    該系統由數據採集、譯碼、實時數據處理、實時監控模擬再現等模塊組成，系統還提供用戶介面、網路介面，數據分析介面，譯碼擴展介面等。該系統可以應用於航空公司機務維修等部門，結合地空數據鏈系統，為保障飛機飛行安全以及日常監控提供科學的依據，同時也為飛機油耗優化、技術評估等提供數據支持。
  9. For the positive real function image encoded by double random - phase, the first random - phase mask placed in the blank can not serve as the key when the decrypted image is detected by intensity detector in the decrypting process

    摘要正的實函數圖像通過雙隨機相位編碼加密以後，在解密過程中，用光強探測器接收解密圖像時，位於空域的第1塊相位掩模不起密匙作用。
  10. The author, martin brown, just sort of throws whatever explanation comes to mind at each block of three or four lines of each script which are redundantly printed, then printed again with annotation

    作者martin brown只是將在頭腦中出現的解釋寫到每個腳本中帶有三、四行的一個註解塊（在印刷代碼時先預留一定空白，再將注釋印上去） 。
  11. First, the author makes the waihuan road in tianjin as the study object. through analyzing of system target and user ' s demands, the author designs the spatial database and attribute database on the base of webgis software selected. the author connects the two kinds of data by the road section number and constructs the professional module not only to realize the management of waihuan road but also to evaluate and predict the pavement performance

    為提高公路管理工作的效率，本文將人工神經網路技術應用於路面性能預測中，進行了基於webgis的路面管理系統的結構和功能設計，研究內容分為以下兩個方面：首先，以天津市外環線為研究對象，通過對系統的目標、用戶的業務需求分析，進行空間數據庫和屬性數據庫的設計，選擇適當的webgis軟體，在此基礎之上通過路段編碼進行空間數據和屬性數據的動態鏈接，建立路面管理系統專業模塊，在實現對外環線路面信息管理的同時，利用這些信息對路面性能做出評價和預測。
  12. With the theory of wavelet transform and reversible integer - to - integer wavelet transforms based on shifting frame used in image / video compression field introduced, a new real - time implement of speck algorithm using dsp chip is provided. then the technology of motion estimation and motion compensation is discussed and an adaptive technique for the wavelet video codec to reduce the " block artifact " is presented. and the implement of the wavelet video compression system using adv611 chip is discussed next with the performance emulation result

    在系統討論了小波理論在圖像視頻壓縮編碼領域的應用后，結合dsp技術提出一種基於dsp應用的實時低存儲需求的改進speck圖像編碼器；隨后探討基於小波變換的實時視頻編碼器的實現，在論述運動估計與補償技術的基礎上，針對應用空域運動估計補償技術的低比特率小波視頻編碼器提出一種自適應消除塊效應的技術；並討論了基於adv611晶元的視頻壓縮系統的壓縮性能；最後提出一種基於dsp平臺具有極低時延的小波視頻混合編碼方案，對該方案的壓縮性能進行了討論並給出初步的硬體實現方案。
  13. The eyes can be considered as a salient and relatively stable feature of faces, so firstly eyes - analogue regions in cluttered images are segmented using local adaptive threshold edge detector. then the small eye - analogue regions are grouped together and labeled using a traditional labeling process according to their geometrical and color features. instead of finding potential eye - pairs from eye - analogue regions one by one, all possible pairs of eyes are encode as the solution, and the potential face are searched by gas

    新意之處：利用膚色是一種感知現象的特性以及神經網路的強大感知、學習功能，採用進化神經網路對膚色進行感知和分類；以眼睛的幾何和周邊的膚色特徵分割眼睛塊，克服了在完整的膚色區域內檢測人臉方法的局限性；對候選眼睛對的編號而不是人臉在圖像中的位置、人臉的尺度和方向進行編碼，使遺傳演算法用於人臉定位時的問題空間得以大大簡化，採用一個新穎的眼睛及臉頰部位的灰度投影及膚色模板驗證，可以實現多尺度、任意方向的正面人臉檢測，實驗結果令人滿意。
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