隨機多址 的英文怎麼說
中文拼音 [suíjīduōzhǐ]
隨機多址
英文
rma random multiple access-
Slotted random access channel based on multimedia packet
多媒體信源時隙式隨機多址系統研究Finding a feasible and efficient load balanced strategy for the ultra - scalable multi - plane multi - stage switch architecture is a top of nowadays research. the dissertation proposes a two - stage load balanced scheme for the ultra - scalable multi - plane multi - stage switch architecture based self - routing and non - blocking permutation benes network. the approach uses reasonable and efficient logical queueing strategy and schedule scheme in ingress traffic managers and switch planes to realize the two - stage load balancing of ip traffic which for different destination addresses
本文提出一種適用於基於完全可重排無阻塞benes拓撲構建的多平面多路徑（多級）超大容量交換結構的兩級負載均衡策略，通過在輸入流量管理器和benes交換平面內部實施合理而高效的隊列組織調度方法，有效實現了基於不同目的地址的ip流量在兩個層次上的負載均衡，較好彌補了ciscocrs - 1系統在平面選擇和中間級選擇時所採用的簡單隨機或輪循方案的不足。Abstract : a technical solution for the multi - channel random data stream by tsr receiving programming is presented. details about resident interrupt receiving, data buffer setup, data segment address keeping, buffer read / write operation and program resident / unresident are described ， and information process programming with advanced language is discussed. the application of this technique in the control system for the automatic burdening of a cement production line is given. the debugging method and procedure is introduced. source program written in advanced language, include data buffer access and calling are listed
文摘:給出了一種「多通道隨機數據流的中斷駐留接收技術方案」 ，詳細描述了內存駐留中斷接收、開設數據緩沖區、數據段地址保存、駐留/解除和數據緩沖區讀取，討論了高級語言程序信息處理，舉出了該技術方案在「水泥生產線微機全自動配料測控系統」中應用的實例，介紹了調試方法和步驟，給出了高級語言讀取數據緩沖區數據及調用源程序。The selection process was carried out through random selection in our computerized email selection machine ( topaz ) from a database of over 250, 000 email addresses drawn from all the continents of the world
選拔過程進行了隨機選擇的電腦郵件篩選機（黃玉） ，從數據庫中的25萬多人的電子郵件地址來自世界五大洲In the second part, we choose four stations on the basin which up the long - tan dam - site, and estimate a multidimensional auto regression model to model the daily discharge. then test the model and the simulate effect of the modified flood series
第二篇中選擇龍灘壩址以上流域的四個站，通過建立多維自回歸模型對其日流量進行隨機模擬，然後對模型和模擬生成的洪水系列進行模擬效果檢驗。Address of applicant of number of card of the member that name of applicant of full name of the member that ws021 touchs duty to apply for to examine and approve watch enterprise to code duty wu registers date to do tax does tax contacts a phone to apply for to support imposition argument : legal person delegate : date ( official seal ) the place of imposition of proof content categories of taxes that proves much capture imposition belongs to period to answer capture amount already capture amount already capture by name of proof of date of card name pay many capture amount touchs capture imposition circumstance to touch name of tax items of name of capture categories of taxes to have those who owe tax : this watch sets upright type 16 times one type triplet, should be accompanying already duty proof photocopy appears in the newspaper along with all the others
Ws021抵稅申請審批表企業編碼稅務登記號辦稅員姓名申請人名稱辦稅員證號申請人地址聯系電話申請抵稅款理由：法人代表：年月日（公章）證實多繳稅款的憑證內容稅種稅款所屬時期應繳金額已繳金額已繳憑證名稱繳納日期憑證字號多繳金額抵繳稅款情況抵繳稅種名稱稅目名稱有欠稅的應先抵繳欠稅抵繳本期稅款金額稅款所屬時期抵繳金額申請數批準數申請數批準數留抵總金額基層稅務機關核實意見年月日（簽章）上級稅務機關批準意見年月日（簽章）注：此表16開豎式一式三份，應隨同已稅憑證復印件一併上報。Then we introduce pulse position modulation ( ppm ) using pn code and analysis its multi - access performance, system capacity and power spectrum density. on the basis of those analyses, we study the pulse shape and the anti - jamming ability of the system. at last, multiple access with pseudochaotic time hopping is introduce
本文首先闡述了uwb脈沖通信系統的基本原理，重點介紹了用偽隨機碼跳時的ppm （脈沖位置調制）調制，分析了他的多址性能、系統容量和功率譜密度，在此基礎上研究了改進性能的發射信號形狀和系統抗干擾能力，最後介紹了偽混沌碼跳時的多址方式。Optical code division multiple access ( ocdma ) technology possess the characteristics of combating interference, high frequency efficiency, security, and simply network protocol, random access, so it is competitive to apply ocdma to wireless optical access network
光碼分多址（ ocdma ）技術具有的抗干擾能力強、頻率利用率高、保密性好、網路協議簡單、支持隨機接入等優點，將其應用到無線光接入網中，不僅具有cdma技術的優點又保持了無線光通信的優點，實現二者優勢互補。Analysis of improved contention resolution algorithms and throughput over rac
隨機多址通道沖突分解演算法及吞吐量分析Analysis of capacity of spread spectrum random access communication system spread with kasami sequences
序列隨機多址擴頻通信系統的容量分析Several kind of typical mac protocols in access network were analyzed. investigating and comparing the characteristics among tdma 、 wdma 、 cdma ; random multiple access protocols such as aloha were analyzed ; slotted aloha - cdma multiple access protocol was analyzed too
分析了以aloha協議為代表的隨機多址接入協議的特點，以及固定與隨機相結合的時隙aloha - cdma多址接入協議的特點。It works often in burst mode. the signal channel is complex and large. several protocols can be applied to the system : fixed addressing, committed addressing and stochastic addressing ( aloha ) protocols
系統使用的多址協議可以是固定分配地址的、按需分配地址的或者是隨機接入的，這三種方式中，當網路用戶數量大而業務量小，用戶間歇工作時候，隨機接入多址技術簡單而高效。Civil air defense alarm system was a system to dispense antiaircraft alarm sig - nal, hand hostile air attack informational communication to urbanite at wartime. it is a particular informational communication system of the civil air defense depart - ment, and can not be taken place. at the development trend of digitaliza - tion, unitization, integration of civil air defense communication, the civil air defense alarm system is developing too, for adaptation to the require of both future war and peaceful dual, and enhancing civil air defense communication system ' s directing automation. in recent years, development of different kinds of communication technology infuses new clearly energy into communication, especially spread spectrum communication, because of its strongly interference - free feature, invisibility best, realizable code division multiple access and antimultipath wane and so on merit, gets extensive use at wireless region ; the corresponding spread spectrum chips emerge as the times and get boom, which provides advantag e to realization of the circuit of spread spectrum communication. at the same time, in company with the advance of electronics level, the single chip microcomputer has a great development, world renowned chip manufacturer pushout respective products one after another, the kinds of which are too many to statiste
在人防通信的數字化、一體化、綜合化必然的發展趨勢下，人防警報系統也不斷發展，以適應未來戰爭和和平時期的雙重需要，提高人防通信系統指揮自動化。近年來，各種通信技術的發展給通信注入了活力，擴頻通信更因其抗干擾能力強、隱蔽性好、可實現碼分多址和抗多徑衰落等優點在無線領域得到了廣泛應用；其相應擴頻處理晶元應運而生並得到迅速發展，這為擴頻通信的電路實現提供便利。同時隨著微電子工藝水平的提高，單片微型計算機有了飛躍發展，世界上著名的集成電路晶元製造商紛紛推出各自的產品，單片機型號之多，已達到難以統計的地步。Optical code division multiple access ( ocdma ) is a communication mode which introduces the code division multiple access ( cdma ) technology into optical fiber communication system. besides providing asynchronous communications access, ocdma system has many advantages, such as high capacity, security against interception, suppression of narrow band disturbances, capability in forming variable bit rate networks and multi - rate networks. it implies a great challenge for the development of future communication networks, especially all optical networks
光碼分多址（ ocdma ）是將碼分多址（ cdma ）技術與大容量的光纖通信技術相結合的一種通信方式，其主要優點表現在如下幾個方面：允許多個用戶隨機地接入同一通道：可構成真正「透明」的全光通信網路；具有良好的安全性；允許可變速率或多速率傳輸，並可同時提供多種業務支持；具有優良好的抗干擾能力，並能夠充分地利用石英光纖的可用帶寬。This thesis is focoused on the pn sequence of direct spread cdma communication system, including it ' s generation and properties analyzing. at first, this thesis expounds linear - shift - register sequence and chaotic sequence, and calculates the value of their main properties
本文的研究的是直接序列擴頻的碼分多址（ codedivisionmultipleaccess ，簡稱為： cdma ）通信系統中的偽隨機序列技術，包括它的產生方法和性能分析。Firstly, inttoduce and analysis the reservation random access protocol ( rra ), which is fit to the data services. then the packet reservation multiple access ( prma ) protocol is introduced, which is fit to the integrated voice / data services
首先介紹和分析了針對數據業務的預約隨機接入（ rra ） ，然後介紹了支持話音和數據綜合業務的多址接入方法prma 。For power control of listening users, forward power control method are introduced based on full, multichannel, filtered report, and collision method etc. the full report method has redundancy report information, and its real - time performance is bad, multichannel report is introduced to improve the real - time performance, and filtered report is introduced to eliminate the redundancy information, finally the collision method introduced can not only get higher real - time performance but also diminish the redundancy information ; 2. in order to meet the requirements of making the dynamic simulation of trunking group system, the ms ’ s random move equation is brought forward, the simulation of ms ’ s distribution is done and the integrated channel model are presented ; 3. the smart predicative model of power control is introduced to overcome the delay and track the change of the complicated network, with this model, the power control ‘ s performance is greatly improved
全匯報方法存在冗餘的匯報信息，而且實時性較差，為了改善實時性提出了多通道的匯報方式，為了改善冗餘匯報而提出了篩選法，最後介紹的碰撞法在減少冗餘信息的同時又提高了實時性;二、為了集群功率控制動態模擬的需要，提出了移動臺的隨機運動方程，進行了有關移動臺的分佈模擬，建立了綜合的通道模型;三、希望克服延時和跟蹤復雜網路環境變化，提出了功率控制的智能預測模型，通過智能預測模型可以改善功率控制的性能，著重介紹了採用神經網路的方法實現智能預測的通用模型，從而跟蹤復雜多變的無線環境，諸如慢衰落及快衰落（包括多徑衰落、多普勒效應所引起的衰落）等網路特徵，達到預測功率需求;四、採用二級正交碼和智能天線（空分多址）的方法進行組內用戶的識別，改進功率控制效果;五、話權用戶的前向和反向功率控制方法;六、對引入gota的cdma系統提出了復合容量表示方法，並作容量分析，探討有關gota系統的qos問題。Besides, this paper studies the wireless optical code division multiple access ( w - ocdma ) technology whereas its anti - jamming, security and asynchronism. based on the w - ocdma communication technology, we analyzes ocdma mac protocol, studies the protocol theory, access mechanism in detail, and models the throughput performance, simulates and analyzes the performance
（ 3 ）鑒于無線光碼分多址（ wirelessopticalcodedivisionmultipleaccess ， w - ocdma ）技術的抗干擾、保密和隨機異步接入的優點，本文分析了基於ocdma接入的無線光局域網mac協議，闡述了協議原理和接入機制，用馬爾可夫模型對吞吐量性能進行了建模和模擬計算。Generally, in the cdma ( code divide multiple access ) communication system, we take the m and gold sequences as the pn ( pseudonoise ) code
在cdma （碼分多址）通信系統中，通常所用的偽隨機碼為傳統的m序列， gold碼等。But they have the disadvantages such as poor complexity, poor security and insufficient amount of sequence numbers among the family of codes, the chaotic signals have noise ? ike, broadband frequency spectrum, they can be used as spreading codes, furthermore, chaos system is extremely sensitive on initial conditions so that the various initial conditions given by chaos system can provide with large sum of spreading sequences and this can meet the demand of cdma, this thesis sets out to study on using chaos system to generate spreading sequence s, there are two parts is this paper : firstly, we study the basic theory of spread ? pectrum communication and the characteristics of chaos so as to prove the applicability of chaos system to be used in spread ? pectrum ii communication system
現在使用的擴頻碼有m序列， gold碼和r - s碼等，這些擴頻碼具有良好的隨機性，但普遍存在著復雜度低、保密性差以及同一碼族序列數目少等缺點。混沌信號具有類似噪聲、寬帶連續頻譜的特徵，正符合擴頻通信中對擴頻碼的要求，而且混沌系統對初始值極其敏感，可以通過給混沌系統賦予不同的初始值得到為數眾多、不相關的擴頻序列，這正好滿足碼分多址的要求。本文對利用混沌系統應用於擴頻通信作了一些研究工作，主要包括兩部分：第一部分：探討了擴頻通信的基本理論和混沌的基本特性，說明將混沌系統應用於擴頻通信系統的可行性。分享友人