突發性通信 的英文怎麼說
中文拼音 [tūfāxìngtōngxìn]
突發性通信
英文
bursty communications-
The columns and rows are constrained by each other. the simulations over binary symmetric channe ( lbsc ) and gilbert - elliott channel ( gec ) shows the performance is great improved, especially over burst error channel peak signal to noise ratio ( psnr ) is improved more. it is tried to be used in wireless communication system
模擬結果表明，採用行列交替約束的約束維特比譯碼以後，性能得到較大的提升，尤其在突發錯誤通道中，傳輸的圖像經乘積編碼進行通道編碼與譯碼后峰值信噪比有明顯的提高。Shortwave channel is time varying transmission channel. it has dispersion in frequency and time domains. this characteristics hinds the data transmi - ssion at high speed and the correction of received data. in this dissertation i have analyzed the statistic characteristic of shortwa - ve channel, established the model of shortwave channel and simulated the rayl eigh fading distribution. the technology of spreading spetrum has been proved that it has the capability for anti - multipath and discerning multipath
在短波通信中，由於通道的時間色散和頻率色散，引起多徑展寬和多徑衰落，前者限制了數據的傳輸速率，後者造成短波數據通信中出現突發錯誤，為了解決多徑效應對短波通信的影響，本文所做工作如下：首先詳細分析了短波通道的統計特性，建立其數學模型；其次分析了擴頻通信的特點，從理論上證明擴頻技術不僅具有抗多徑干擾能力，而且具有分離多徑的能力；介紹了傳統的rake分集合併技術的特點。The effects of meteor trails scattering on a back scattering beyond - light - of - sight radar detected distance and probability of detection are creatively calculated in theory. it is practicable worth for analyzing the performance of the electronic systems
本文第一次從理論上研究了流星余跡散射對電子系統性能影響，這些結果對研究突發通信系統和超視距雷達系統等電子系統的性能都有一定實用價值。The effects of the meteor trails orientation on the size and shape of the footprint on the ground are calculated, which the mechanism of good concealment, antijam and low probability of intercept is explained. this method overcomes the classical limitation
其次用數學的方法研究並計算了流星余跡的方位對地面「足跡」的形狀和大小的影響，從而揭示了流星突發通信具有保密性好、抗干擾性、抗攔截的物理機制，克服了經典方法的缺陷。This paper proves the optimality of linear network coding, making possible the realization of network coding in practical applications
該文證明線性網路編碼之最優性，並將網路編碼理論落實至實際應用，為網路通信帶來突破發展。Smpdca architecture has six outstanding excellences : complexity of the control logics of smpdca is lower than large scale superscalar ; supplying shortest inter - processor communication latency using the shared li data cache ; no cost to maintain cache coherence ; hit rate of data cache increase ; easy to reuse many softwares of symmetric multiprocessor ( smp ) ; exploit the parallelism of applications from many levels. this paper present the architecture model of smpdca, and illustrated its function units, and discussed its key techniques, and analyzed the address image policy of multi - ported cache
Smpdca結構具有六個突出優勢：相對于大規模的超標量結構而言， smpdca結構的控制邏輯復雜性明顯要低得多；相對于通過共享主存來實現處理器之間的通信的結構而言，通過一個共享的第一級數據cache來實現處理器之間的通信的smpdca結構能夠提供非常小的處理器之間的通信延遲；沒有cache一致性維護開銷；數據cache命中率提高；便於smp （對稱多處理器結構）的軟體重用；從多個層次上開發程序的并行性。We also analyze the influence of the boundary condition 、 safety distance and deceleration probability to the traffic flow. finally, we propose an crossroad modle. this model is made up of one main road and one branches ： traffic with lights placed on the crossing, vehicles " breaking while running and turning to other direction while jamming. we investigate the velocity and flow of the model when the initial density, the brake and turning probabilities, the green to signal ratio are changed. then the reasons causing all the kinds of phenomena are analyzed
最後研究了周期性邊界條件下的十字路口的ca模型，該模型由一條主幹道和一條支道組成，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中對突發事件發生反應的剎車，路口的車輛可以轉向等各種實際交通行為，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、紅綠燈信號的綠信比等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。Secondllv in the 1 d random traffic flow model. the relation function between the correlation and the creation. disappearance. brake probabilities of the vehicles is presented. according to the statistical mechanical approach to the spatial correlation functions. the theoretical results agree with that of the computer simulation. thirdh. based on the bml model. a main - road traffic flow model with two speeds on two dimensions is designed. this model simulate the traffic situation of one main road and several branches in the cit traffic lights placed on the crossing. vehicles breaking ~ vhile running and turning to other direction while jamming. we investigate the ~ ' e1ocitv and flo ~ ~ of the model when the initial densitvthe brake and turning probabilities. the green to signal rati3. thc number of the branches and the period of the signal are changed. then the reasons causing all the kinds of phenomena are analvzed. finallv. we simulate the bml model using the method of lattice boltzmann which ~ vas brought out by liu mu - renand obtain the velocity - density graph similar to the previous result. the upper critical densiw above which there are oniv jamming configurations. and the lo ~ ver critical density below which there are only moving configurations are the same as before. the boltzmann function which is on the lattices shows the moving and jaxmning transition obviouslv. thus it proves the possibilit of this method on the traffic research
接著，建立了和研究了二維二速的主幹道模型，該模型模擬了城市交通中一條主幹道，多條支道的交通情況，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中可以有對突發事件發生反應的剎車，在發生堵塞時，路口的車輛可考慮通過轉向來緩解交通等各種實際情況的發生，給出了車輛演化的演化方程，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、支道數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。最後，在劉慕仁提出的用格子boltzmann方法研究一維決定論交通流的思路下，將此法推廣到對二維bml模型的模擬上，得到了與用以往方法的研究結果相類似的速度-密度圖線，且車輛從運動相到堵塞相轉變的上下臨界密度是一致的，同時分別給出車輛在處于暢通相和堵塞相時， boltzmann函數在格子上的分佈情況，進一步驗證了此法的可行性。The proposed md mesh - based motion coding methodis then combined with the pairwise correlating transform, and acomplete md video coding scheme is proposed. further measures are takento reduce the mismatch between the encoder and decoder that occurs whenonly one description is received and the decoder reconstruction isdifferent from the encoder. the performance of the proposed scheme isevaluated using computer simulations, and the results show, compared toreibman s md transform coding mdtc method, the proposed schemeachieves better redundancy rate distortion performance
數據重傳必然會引起延遲，因而在需要很短延遲的應用中是行不通的，如雙向無線通信同時在以廣播方式進行數據傳輸時也是行不通的當有大量突發錯誤時，糾錯碼如分組糾錯碼block code及卷積碼convolutional code無法在不產生額外延遲及需要額外運算的前提下對數據提供足夠的保護而錯誤掩蔽的性能則受接收到數據與丟失數據之間的殘留相關性大小的影響。The advantage is that in view of the actual mobile telecom market of yz city during the research we comprehensively adopt many scientific market research methods such as questionnaire, data analysis method, depth interviews and subjective probability then use the spss to analyze the data to get plenty of valuable market information. the advice we offered can be profitable strategic reference when the mobile telecom company set down their marketing policies on market development and product development
突出的地方在於結合yz市移動通信市場實際情況，科學地採用了分層抽樣方式，綜合運用了問卷法、資料分析法、主觀概率法和深度訪談法等調查方法，使用了spss軟體進行統計分析，從而獲得了豐富的較有價值的市場信息，並從市場基本戰略的角度提出針對性的策略建議，為運營商進行市場和產品開發及市場戰略的制定提供有益的參考。With fca, the channel - reuse pattern can be optimized and the management of channel assignment to a mobile terminal is simplified. however, such a scheme cannot accommodate fluctuating traffic in a cell : when the traffic increases, the packet delay may increase to a undesirable level, or even been blocked
較之傳統的語音業務來說，數據業務的分佈非常不均勻並且更具突發性，這使得即使是在第三代系統中，盡管系統容量有了較大的提升，但在通信的高峰時期，阻塞的情況仍然有可能在某些小區內發生。It adapts to the cdma system and achieves multi - rate speech coding and decoding. source and mode control are combines in smv for rate selection, so it improves the flexibility of cdma system, it will allow cdma subscribers to enjoy superior quality while allowing service providers to increase capacity as needed. smv is regarded as a breakthrough technology that provides significant capacity and quality gains on cdma systems, so the researching of smv is of great practical value
可選模式聲碼器（ smv ? selectablemodevocoder ）是3gpp2最新的用於寬帶擴頻cdma通信系統的變速率語音編碼標準，它實現了語音的多種低速編碼和解碼，在速率選擇上將源控和模式控制相結合，提高了cdma系統的靈活性，可以在保證高質量語音的同時盡可能增加系統的容量，被認為是變速率語音編碼在cdma系統中應用的「突破性」技術，代表了當前語音編碼發展的方向和潮流，因此smv的研究具有很大的價值。In order to break through the limitation of small system model, for the verification of woo and lam u symmetric key protocol with smv, a model is built up. an honest agent in the model is allowed to participate in two protocols. finally a flaw is found that an intruder can successfully commit an attack when the responder is allowed to participate in two protocols simultaneously
為了突破小系統模型的局限性，我們使用smv驗證wooandlam對稱鑰協議時，建立了允許誠實的通信實體運行兩次協議的模型，在這個模型上發現了一個已知的協議漏洞，攻擊者利用誠實通信實體的兩次運行，成功地進行了攻擊。After that, based on the above discussion and technology comparison, an improved nda ( non - data - aided ) carrier offset estimation algorithm is proposed which has the advantages of improved carrier offset estimation performance and can be realized by high - speed dsp chips
本文論述的方法無需以數據為輔助進行頻率和相位估計，特別適合於突發性通信。同時系統性能穩定，其低復雜度的設計易於高速dsp器件實現。The paper, based on the analysis on the contents and characteristics of emergency material requirement, adopts relative theories and methods of artificial intelligence, puts forward predictive method of emergency material requirement based on case - based reasoning ( cbr ), and works out fuzzy reasoning model of case and reasoning procedure. the method above is adopted to describe the situation and deal with the information from the emergency, which can help to get the result of emergency material requirement. what ’ s more, the forecast result includes the quantity requirement, quality requirement and structure requirement of material, which conquers the subjectivity and
文章在分析應急物資需求內容與特點的基礎上，運用人工智慧中的案例推理技術，提出了基於案例推理（ cbr ）的應急物資需求預測方法，給出了案例的模糊推理模型和推理過程，該方法通過利用已有突發事件中情景描述信息和應對處理描述信息，得到突發事件發生后物資需求預測結果，預測結果中不僅包含物資的數量需求，而且還包含物資的質量需求和結構需求，克服了單純依靠經驗判斷進行物資需求預測的主觀性和盲目性，創新了應急物資需求預測方法。The study of fiber photosensitivity is proposed because of the rapid development of fbg and its great influence on optical communication and optical sensing, room temperature high pressure hydrogen loading technique has been recognized as an efficient means of achieving ultrahigh photosensitivity
光纖光柵突飛猛進的發展以及它在通信和傳感領域的巨大影響對光纖光敏性的研究提出了要求，而載氫是光纖增敏的一種有效方法。With the development of the consumer electronics, automobile electronics and communication electronics, power management ics have been more and more important, especially in the battery - operated portable systems. the topic about the thesis is the corporation with an abroad company
隨著消費類電子、汽車電子和通信電子的不斷發展，電源管理晶元的重要性日益突出，在以電池為供電主體的便攜式電子產品中更是如此。So we setup a test system to generate burst mode optical signal, to simulate the feature of amplitude and phase disproportion of the burst mode signal, and at the same time it can change the relevant data when needed. the burst mode optical signal generators are used to simulate the upstream transmitting and receiving process, and detect the characteristics of the transmitter and receiver module. only use this method, the indexes measured can satisfy the requirement of the real system
因此在研究突發光模塊的過程中，就需要建立一套測試系統來產生突發光信號，模擬出突發信號幅度和相位不均衡的特點，同時還要能夠根據需要改變相關的數據，通過突發光信號模擬產生系統來模擬pon上行信號的實際發送和接收過程，以檢測發射模塊和接收模塊的性能，只有這樣測出的模塊指標才能滿足實際系統的要求。We should be able to handle the bursty communications demands during the olympics as many people will flow into beijing
在奧運會期間，大量的人口將湧入北京，我們需要滿足人們在場館內外使用通信工具的突發性需求。This is by two reasons : the first, as the development of military communication technologies, it transit from digital to software implementation, intelligence, broad band implementation and network implementation. many new technologies such as adaptive frequency hopping, burst communication, broadband modulation and complex coding accelerate the research about pertinence algorithms of signal sense and signal processing. the second, three hotspots of modern signal processing - spectrum estimation, high - order statistics ( hos ) and time - frequency analysis theory become more and more consummately and being used in communication jamming and anti - jamming field
應用於軍事通信對抗的信號處理理論發展非常迅速，這得益於兩個方面的動力：其一，軍事通信的技術和手段不斷更新，在數字化的基礎上逐步走向軟體化、智能化、寬帶化和網路化，出現了自適應跳頻、突發通信、寬帶調制和復雜編碼等新的實用技術，推動了具有很強針對性的信號偵測和處理領域的演算法研究；其二，現代信號處理的三大熱點? ?譜估計、高階統計量方法、時頻分析的理論和技術日臻完善，並逐漸應用於通信對抗領域。分享友人