統計符號 的英文怎麼說
中文拼音 [tǒngjìfúháo]
統計符號
英文
statistical symbol- 統 : Ⅰ名詞1 (事物間連續的關系) interconnected system 2 (衣服等的筒狀部分) any tube shaped part of ...
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 符 : Ⅰ名詞1 (符節) tally (with two halves made of wood bamboo jade metal issued by a ruler to gener...
- 號 : 號Ⅰ名1 (名稱) name 2 (別號; 字) assumed name; alternative name3 (商店) business house 4 (...
- 統計 : 1 (對有關數據的搜集、整理、計算和分析) statistics; census; numerical statement; vital statistic...
- 符號 : 1 (記號; 標記) character; sign; symbol; mark; code; notation; expression; denotation; sentinel ...
-
And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results
接著,對自適應調制系統中的通道估計問題難點,詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然( ml )估計和最大后驗概率( map )估計演算法,針對平衰落通道,我們模擬了map估計和ml估計的方差與導頻符號長度的關系,模擬結果表明,錯誤方差受多譜勒頻率的變化影響最大,並且對實際的自適應調制系統,導頻符號長度的取值超過20個符號長度時, map通道估計明顯優于ml通道估計。The trial demonstrates the map symbolic library is complete, normative and perfect in functions. the output digital map in don format can satisfy the needs of map publishing as well as data convert and meet the demands of system devisal
試用證明,系統符號齊全規范,功能完善,產生的dgn格式數字地圖可以滿足地圖出版和數據轉換的需要,達到了系統設計的要求。First, this paper gives a method, which is utilized by baseband system according to wcdma system capability requirements, using asic + dsp to realize raker, using dsp + dsp to realize symbol process. the hardware structure of asic + dsp and dsp + dsp is designed from the whole design view. then, the discussion is made of the main function module of ic2001 and dsp, hi module, dsp peripherals on chip such as hpi, edma and emif
文章首先結合wcdma系統性能要求提出了基帶系統所採用的方案,由asic + dsp實現rake接收機功能和dsp + dsp實現符號級處理功能;然後從總體規劃的角度設計出asic + dsp和dsp + dsp系統硬體結構,對ic2001和dsp的主要功能模塊, hi模塊, dsp片上外設hpi口、 edma和emif總線作了分析,並結合基帶處理功能開發了系統驅動;最後由信號源發出測試數據進入系統,進行功能實現后輸出數據繪制出波形圖,對所設計的基帶系統驅動方案進行驗證分析。This paper which starts from the actual needs, directed by the theory of cartology analyses all kinds of requires and functions for dmges, and create the spatial data model of the software system, combining the new generation programming technology, taking the oo software modeling, analysis, design method, it realized the collection, display of digital map data and the building of map denotation library, hi the end, this paper put forward the go - on research in future
本文從數字地圖制圖的實際需要出發,在地圖學理論的指導下分析了數字地圖圖形編輯系統的各種功能和需求,並建立了軟體系統的空間數據模型。結合新一代的計算機程序設計技術,採用面向對象的軟體建模、分析和設計方法實現了地圖數據的採集、顯示、編輯、地圖符號庫的建立。最後提出了需要進一步研究和完善的內容。And by means of classification of subjects, we may find their success and fault in the design so that we can integrate theory with practice to ensure the realization of the inheritance and innovation. chapter five explains that the ideology of sustainability such as resources preserving has been crucial in housing design. by the study of design practice of several typical works in the domestic or the foreign, the author tries to explore an ecological design method in the traditional building which is fit for nature and combine it with modern housing design method, so as to obtain a design theory of sustainable housing and its essential ecological adaptability
第4章是從建築文化繼承與創新的角度出發,以後現代建築風格流派的發展為研究對象,並結合從具體建築實例中歸納設計手法的種類,通過對其武漢理工大學碩士學位論文符號語言特徵予以闡述,進而理清其脈絡與結構、分析其基本特徵,試圖從后現代建築對于傳統建築符號語言的沿襲與發展這一全新角度來重新審視現代城市居住建築的成功與不足,以期力求從理論和實例的結合中找出居住建築可持續發展的一般規律。I hope that the system will help to shift the practice experience to some feasible theory. i should say my research has efficaciously introduced semiotics into the cognition and design of style
本研究有效地將符號學理論引入了風格認知和設計中,並以實際的統計數據形象地說明了特徵的context特性及其對風格的影響。The estimation of frequency offset is based on pilot symbols and non - pilot symbols. this paper also discusses some parameters in the method and gives the way of compensation. to get the estimation method of doppler spread width, we model the rayleigh channel based on the conclusion of gans ’ spectrum analysis based on clarke model
其中頻偏估計採用一種基於導頻符號和去極性非導頻符的方法進行估計,並通過試驗環境驗證了此方法,並確定了這個方法中的參數的取值,在此基礎上介紹了本系統中的頻偏補償方法。The main hardware - platform is based on the altra ’ s statix series fpga chip ep1s80f1020c5. the realization of the energy dispersal, ldpc - coding, symbol interleaving, constellation mapping, synchro - pn insertion, 3780 - point ifft ofdm, interplation fir, etc have been implemented based on fpga
系統中能量擴散、 ldpc編碼、符號交織、星座映射、同步pn頭插入、 3780點ifftofdm調制以及信號成形4倍插值滾降濾波器等都是基於fpga硬體設計實現的。In this programme, the database of many stored foods and experiential database are described by using production system, and, inexact reasoning is settled down with the method of fuzzy logic, finally, by separating the control knowledge and field knowledge, the design clue of expert in field is incarnated in the form of rules - base. the expert system created can simulate the thought and decision - making of expert in hvac field, and get the anticipative results
該程序中用產生式規則系統建立了冷藏食品信息庫和經驗數據庫,並運用模糊邏輯方法進行不精確推理,採用控制知識和領域知識分離控制流的方法,以規則庫的形式,體現了領域專家設計思路。該專家系統模擬專家進行符號推理及選取經驗數據,得到了較好的設計結果。The definition of traditional knowledge is that it is traditional works of literature, art, science, traditional performance, invention, scientific discovery, design, symbol, name, mark, open information and all the traditional invention and creation in the industry, science, literary or artistic territory
關于傳統知識的最為確切的定義為:傳統知識是指基於傳統的文學、藝術或科學作品、表演、發明、科學發現、外觀設計、標記、名稱與符號、未公開信息和所有其它在工業、科學、文學或藝術領域內產生的基於傳統的發明和創造。Stochastics ; mathematical statistics ; concepts, signs and symbols
隨機學.數理統計.概念標記和符號This thesis analyzed the error performance of mfsk and mpsk modulator in hf with optimal receiver, studied the shortcoming and strongpoint of several typical short - wave data transmission systems and their performance over fading and intersymbol interference channels. the theory and key technical of adaptive modem is discussed. in the last, an efficient modulation scheme - block coded modulation is introduced into hf radio systems to improve the efficiency of hf data transmission, this paper also proposes a hf data transmission system scheme composed of a block coded modulator and a decision feedback type adaptive equalizer
本文在對短波數傳兩種常見調制方式fsk及psk最佳解調性能分析的基礎上,討論了幾種採用典型調制技術的短波數傳系統(如時頻調制、多進制頻移鍵控慢跳頻、 chess系統)原理、優缺點以及抗衰落和抗符號間干擾的性能;分析了自適應串列數傳系統抗短波通道衰落和多徑干擾的原理、關鍵技術;在本文的最後引入一種有望解決短波數傳系統低效率狀況的調制方式bcm -分組編碼調制,給出了一個採用bcm技術與自適應均衡技術相結合的短波數傳系統方案,並通過計算機模擬進行了初部驗證。The future wireless mobile communication systems are expected to provide ubiquitous, high - quality, and high - rate mobile multimedia transmission. however, hostile multipath fading radio conditions give rise to serious inter - symbol interference ( isi ) ; even worse, wireless channel are often time varying, which makes the system more vulnerable and more difficult to track the channel state. orthogonal frequency dvision multiplexing ( ofdm ), which is inherently resistant against isi, has invoked a popular research interest in recent years, and has been a promising candidate technology of the physical layer for future weideband high - date - rate wireless communications. notwithstanding, ofdm is much more vulnerable to errors of both time and frequency synchronization and to that of channel estimation, and how to obtain correct timing and channel estimation efficiently is highly critical to ofdm systems. the dissertation will focus on both of the aspects of ofdm systems mentioned above
但是無線環境的多徑特性造成通信系統中嚴重的符號間干擾,同時無線通道的時變性使得通道特性跟蹤復雜。而正交頻分復用技術( orthogonalfrequencydivisionmultiplexing , ofdm )正是一種解決符號間干擾的有效傳輸手段,因此ofdm技術作為未來寬帶高速率無線通信的物理層候選技術在當前引起了一股研究熱潮。但ofdm系統對定時同步誤差和通道估計誤差非常敏感,如何在ofdm系統中準確快速地實現符號同步和通道估計是至關重要的,本論文將重點針對這兩個問題進行討論。Whereafter, the structure model, implement mode, the administrative and display functions of plotting map module, and military mark base are designed with the direction of cbd theory, on the same time, a uniform data structure of military mark base is put forward
運用軟體工程的設計方法,以組件式軟體設計思想為指導,設計了軍事標圖組件的總體框架模型、實現模式、標繪要圖管理與顯示功能和軍隊標號符號庫,提出了統一的軍標符號數據結構。The adaptation processing includes linear prediction coefficient adaptation and adaptation of quantization step size for residual signals. based on g. 726, we adopt a huffman coder to make use of probability statistic of bit cascade covering n ( n 1 ) samples generated from adpcm, in order to further reduce the bit rate. ng is lossless entropy coding, the speech quality of our improved algorithm should be same as that of g. 726 standard
我們的研究和改進工作包括:研究最優非均勻自適應量化器,及其自適應演算法;研究波形預測函數,以及函數零點、極點的自適應演算法;基於每n ( n 1 )個樣本所對應符號的概率統計,對預測殘差量化值再進行huffman編碼,進一步降低比特率。( 3 ) base on the mingling method of statistics and structure, paper is studied in automatic recognization for point symbols and building symbols - accoding to traits of point symbols, it adopts combination method to recognize
( 3 ) 、用統計-結構結合法,重點在掃描地形圖中對點狀符號和建築物的自動識別的研究。根據點狀符號特徵進行組合識別法識別;根據建築物結構中有直角的特點,進行建築物的先統計識別,后結構法識別。Signal layer represent links between the nerve cells, knowledge layer represent rules and reasoning of expert, conception layer is the medium layer and connect signal layer and knowledge layer, therefore integrated symbol computing ability of es with link features of ann into one body to make brain model more intelligent
刺激層體現神經元的連接,知識層體現專家的規則、推理,從而將專家系統的符號計算和神經網路的連接主義兩者有機的結合,並在其基礎上構建了形體的表徵模型、推理方法,實現了形態構成知識的產生,為人腦模型的「智能」能力的實現和應用奠定了基礎。Implementation of the simulation software system of agvs translates uml design notations into code in java. in thesis some important technologies used in programming as multithreads and visual modeling are also illustrated
在agvs模擬軟體系統的面向對象的實現中,由分析和設計所得的統一建模語言的設計符號被解釋為java程序代碼。Design information modelling is an important problem in engineering design. aimed at the shortage of information description of multi - types & complex pipeline system design and management in 2d environment, a dynamic modelling method for design and management information based on the object encapsulation is firstly presented in this chapter by defining all sort of design symbols in object. following, the encapsulation models of different kinds of design symbols are designed distinguishingly in terms of their functional characteristics
通過引用對象概念對各種設計符號進行定義,提出了基於圖形實體對象封裝的動態信息建模方法,並根據多類型復雜管線系統規劃布置中使用的不同功能符號的特點,分別建立了不同類型符號的封裝信息模型,同時設計了面向多類型復雜管線系統規劃信息管理的對象-關系模型映射機制。Therefore, it ' s necessary to study a new kind of intelligent design systems and integrate inteliigent symbol reasoning technologies organically into the product design process to overcome the limitation and shortage of the traditional design system, and finally realize product innovative design
因此,需要研究一類新的智能設計系統,將符號推理智能技術有機的結合或集成到產品的設計過程中來,以有效解決傳統智能設計系統的缺陷與不足,最終實現產品的創新設計。分享友人