space symbol 中文意思是什麼
space symbol
解釋
空格符號-
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。 -
Chapter seven is the part of conclusion, it explains that it is the feedback of governmental actions that language was regards as the national identity symbol in different space - time situation
第七章篇鍵輸，魏明首富在不同的峽空輿情境富中，其服民仍同的源配，有睛是謝行將作用下的贈。 -
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。 -
Section 4 researches on pilot symbol aided space - time 2d rake receiver in rayleigh fading channel. two kinds of 2d - rake receivers are proposed, one is the interference zeros force 2d - rake receiver ( zf - 2drake ). simulation results reveal zf - 2drake has the better performance than the conventional 2d - rake receiver
研究了rayleigh通道下2種導頻輔助的空時2d - rake接收機結構:干擾置零2d - rake接收機（ zf - 2drake ）和基於空時通道估計的時空級聯2d - rake接收機（ spce - 2drake ） ，推導了它們的誤碼率性能。 -
In this dissertation, multiuser detection and space - time processing are combined to suppress multiple access interferences and inter - symbol interferences ( isi ) jointly in multipah fading channels with large delay spread
本文組合多用戶檢測和空時處理技術，在大時延擴展的多徑衰落通道條件下，研究多址干擾和符號間串擾的聯合抑制。 -
The completion of the mission was the crowning achievement of an 11 - year, military - linked manned space program promoted as a symbol of national prestige both at home and abroad
這次任務的完成，是一項經歷11年、與軍事相關的載人航天計劃的頂級成就，這項計劃被作為一個事關國家在國內外聲譽的象徵而得到促進。 -
In the course of the database design, after the design of space database structure, code, special symbol and the analysis of attribute data structure, using the database of maplnfo and access to build up and manage spatial and attribute data
在數據庫設計中通過對空間數據庫的結構設計、代碼設計、專題符號設計以及屬性數據結構分析等的基礎上，利用mapinfo4 0自帶的數據庫和access數據庫建立和管理本系統的空間數據和屬性數據。 -
According to the fact of existing mapping relations between cartographic region and the subjective cognition structure, this paper brings forth the definitions of imitative map symbol and virtual map symbol, studies the rule of their evolution, puts foward the mathematical model for maps of planning and forecasting as well as the definition for geo cyber space
摘要根據從制圖區域到主體認知結構，從主體認知結構到二維平面之間存在映射的關系，給出了模擬地圖符號和虛擬地圖符號的定義，探討了其演化規律，並給出了規劃和預測地圖的數學模型以及地理虛擬空間的數學定義。 -
Some critical coding and modulation techniques in uav communication have been discussed in this thesis, including differential phase keying ( dpsk ), modulation multiple symbol detection ( msd ), adaptive trellis coded modulation ( atcm ), and space - time coding. this work was supported by the national defense 973 project. uav communication has many sophisticated technologies
本論文在國防973項目「無人機信息傳輸理論與方法研究」的資助下，結合現代數字通信領域的新技術，根據無人機通信的特點和需求，對其中的幾項關鍵技術做了深入研究。 -
We define the map n from plane to symbolic space, and define its inverse map x using milnor ' s operator. we show that the symbol sequences with same tail ( resp
首先介紹了t l映射的符號動力學，定義了從平面到符號空間的映射冗，還通過milnor運算元，定義了它的逆映射（ -
Virtual community and real community corresponding really but speech, in fictitious " projection " of space realistic space, such characteristics as the loose, interpersonal and interdynamic equality of the symbol nature with exceeding space - time, member ' s identity of human communication of fictitious community, interpersonal relationships, etc. ; to investigate from the sociology meaning, it has new characteristics in such respects as community members ' interdynamic, function and flow, management of the community of structure, community ' s colony of the community, etc. therefore, it needs to arouse the attention from society
摘要虛擬社區是與傳統的實在社區相對應而言的，是現實空間在虛擬空間的「投影」 ，具有人際交往的超時空性、成員身份的符號性、人際關系的鬆散性、人際互動的平等性等特徵；從社會學意義上去考察，它在社區成員的互動、社區的功能與結構、社區群體的流動、社區的管理等方面具有新的特點，需要引起社會的關注。 -
Piercing into the sky from the " qian " is a 27. 6 - metre - long needle, a symbol of the infinity of time and space
6米，是時空永恆延展的象徵。針體用不銹鋼製成，針尖為鈦合金材料。 -
With the characteristics of large ambient noise, very narrow bandwidth, low carrier frequency, great propagation latency and time - space - frequency variant multipath effect ( mpe ), the stochastic ocean channel has demonstrated the greatest complexity and difficulty for underwater acoustic wireless communications. among them multipath effect ( mpe ) is the most difficult obstacle that results in signal fading and inter - symbol interference ( isi )
但是噪聲高、帶寬窄、載波頻率低、傳輸時延大、多途徑效應隨時間?空間?頻率變化等通道特性都會給有效、可靠的水聲通信帶來很大的麻煩，其中多途徑效應是最主要的困擾因素，它會導致信號幅度衰落和碼間干擾。 -
Joint channel estimation and symbol detection for space - time block code
空時分組碼的聯合通道估計和符號檢測演算法 -
But it can not satisfied to recent developing of the city if only to accentuate our job on the urban square ' s space form and the symbol as the old methods have done. on the basis of studying the theory and practice of foreign and domestic famous squares with positive meanings from the angle of the whole urban circumstance, space form, architectural composion and the angle of social life and urban cultural, the thesis inquires into the design method and practice ' s operative process of chinese realities. the thesis also provides some useful advises for our country ' s urban square design
本文就是針對這一問題，通過對城市廣場的起源、發展及其與城市關系的回顧，對古今中外優秀的城市廣場進行分析和總結，並從城市整體的角度來看待城市廣場設計和建設，通過對廣場與城市空間及交通、建築的關系、從城市生態、城市文脈和城市生活等角度結合實例進行分析，論述了現代城市廣場設計應與城市一體化設計的必要，並針對當今我國城市廣場的一些問題，提出了運用現代城市設計思想進行城市廣場設計的一些依據，為我國今後的廣場建設提供一些有益的建議。 -
What the practical problems is often gotten is a single variable time series which has a time interval of t, reflect by a lot of interactive physics factor, containing the mark of all variates participating in movement, traditional time series analysis is to analyse going from this array to the form directly it ' s time develops, one dimension analysis loses useful information, the characteristics of phase space reconstruction method is to construct one dimension scalar quantity to high dimension vector, prop the geometry space of the state, show all dynamical information of system in phase space. the characteristic that just constructs again according to the phase space in this text, analyse the time series of responding, use the relevant knowledge of symbol dynamics and reconstruct phase space, put forward a kind of relation degree analysis method of the systematic mathematics model which has theory basis, so reach the correction of calculation mathematics model, make it accord with the actual systematic state
實際問題中常常得到的是一個時間間隔為t的單變量的時間序列，它是許多物理因子相互作用的綜合反映，蘊藏著參與運動的全部變量的痕跡，傳統的時序分析是直接從這個序列去形式地分析它的時間演變，一維分析必然喪失許多有用信息，相空間重構方法的特點是把一維標量數據構造成高維矢量，支起狀態的幾何空間，在相空間中展示系統全部動力信息。本文正是根據相空間重構的特點，對響應時間序列進行分析，利用符號動力學、重構相空間等方法，提出一種有理論依據的系統數學模型關聯度分析方法，從而達到修正計算數學模型，使其更符合實際系統狀態的目的。 -
Large space structure are the symbol of the national building science and technology for not only its novel and prolific style but also plenty of new material and new technology have been adopted
空間結構形式新穎豐富並且採用了大量的新材料、新技術，成為反映一個國家建築科學技術水平的標志。 -
The space needle, seattle ' s symbol, offers a 360 - degree view from three different levels
西雅圖的標志太空針有三層提供360度的景觀。 -
This paper introduces the concept of the visual transmitting, discusses the excavate of a new visual map symbol, the method of visual flow and visual center in terms of the map symbol and space composition of map figure, and summarizes the discipline how the emotion information of the design can be visually transmitted
摘要介紹了視覺傳達的概念，從地圖圖形符號和圖形空間構圖兩方面探討了關于新的視覺圖形符號的挖掘和地圖審美語境的塑造以及視覺流程、視覺中心等體現地圖構思的形式美方法，由此總結出地圖情感信息的視覺傳達規律。 -
Commercial pedestrian mall, which is one kind of urban commercial space, takes an important role in the room of urban public life. it is not only the integrity of walking and commercial activities, but also the center for people to exchange information and to entertain themselves. here the wonderful urban scene and commercial culture are fully expressed, which can reflect the cultural symbol of the city completely
作為現代城市商業空間重要類型之一的商業步行街，是城市公共活動空間的重要組成部分，它不僅是步行活動和商業活動的統一體，也是人們交流信息和娛樂休閑的中心場所，豐富多彩的城市景觀和商業文化在此盡情展現，最集中的體現出整個城市的社會文化象徵，它的規劃和建設已成為完善城市職能，塑造城市形象的重要手段。
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