通信理論 的英文怎麼說
中文拼音 [tōngxìnlǐlún]
通信理論
英文
communication theory-
This article combines the theory and reality ; try to explore the major effects and changes of relationship between consumers and business from the retail aspect, and tries to show how to gather all the resources efficiently with the real case of shijiazhuang guoda group, how they developed the multiple shop to a sale station, a service station, a circulation station and an information station for merchandise, how they made the geographical shop well - combined with the virtual online sale and improved the competition power of the company, the main objective is to share the experience with the sister industry
本文通過理論與實際應用相結合，從流通創新角度論述電子商務實現了消費者和企業之間信息的快速互動式溝通，使流通業發生了深刻變革，對整個流通業產生的革命性影響，並以石家莊國大集團公司為案例闡述了如何有效進行資源整合，將連鎖便利店發展成為商品的銷售站點、服務站點、物流站點和信息站點的快捷便利的服務平臺，將地理性店鋪網路與虛擬性網上銷售有機結合，提升了企業核心競爭力，旨在為同業提供可借鑒經驗。All the theoretic and data show the project of dds signal source is realizable
本文通過理論和實驗證明其dds信號源部分的方案是可以實現的。Compared to the traditional converter, the new one can transform electric power from a static part to a rotary part without an electrocircuit connection, which makes the contactless power transform come true. one application of this converter is to supply a steady and regulable excitation circuit for synchronous generator by integrated its second winding with the motor while its primary winding is static. the thesis gives two methods of the rotating converter design paticullarly : flyback and fullbridge, and explains how the circuits are designed
通過理論分析、模擬分析和實驗驗證，得出這兩種旋轉變換器都能進行感應電能傳輸，但它們的傳輸功率是不同的，反激式旋轉換器最大隻能傳輸幾十瓦功率的感應電能，因此只能用在感應電能傳輸較小的場合，或者信號傳輸的場合;而全橋式旋轉變換器能傳輸較大的功率，可用於電機的新型無刷勵磁方案中。Chaos is an important branch of nonlinear science. the research of chaos theory and its application in communication is the frontier of science and engineering, which provides a novel research field for conventional commu - nication theory and also presents a broad application platform for nonlinear science
混沌是非線性科學的一個重要分支，混沌理論的研究及其在通信中的應用是當前科學界和工程領域的一個前沿課題，它為傳統通信理論開辟了新的研究領域，也為非線性科學提供了一個廣闊的應用舞臺。This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。In the paper, a conception of wireless lan based on the technology of optical diffusion communication is presented. by analyzing the system ' s structure and each part of the function components, the paper illustrates in detail all kinds of communication theories and protocols that are fundamental for the system ' s operation
本論文提出了基於光散射通信的無線組網新方法，給出了該通信系統的結構和功能模型，就系統涉及到的軟體協議和通信理論進行了細致的分析。As one of the important participants, the author not only designed the framework of the server - end and communication protocol, but made further investigation on interprocess of communications and put forward the accomplishment means of file management and debugger
在開發過程中，筆者參與了服務器端框架結構和通信協議的設計工作，並在深入研究進程間通信理論的基礎上，提出了文件管理和調試器的實現方案。Researches the basis watermark managing works particularly and systemly. there are many works to do on watermak technology except watermark embedding and extraction arithmetics such as the watermark choosing, encoding, modulating, demodulating and the watermark capacity. these prior and ultimate works ensure that the arithmetic is brought into effect. just understanding these, this paper analyses and researches the basic watermark theoretics in many pages. it brings forward chaos modulation on watermark modulating, brings forward chaos permuting on image permuting, introduces bch encoding on letter watermark processing and discusses the approximate estimate of the watermark capacity in dct domain and dwt domain by applying the current communication theoretics. there works not only extend ways for the later work but also are significative on watermark research
全面系統地研究了水印信號的處理技術數字水印技術除了水印嵌入和提取的演算法外，還有許多工作需要做，如水印的選碼、編碼、調制、解調、能量的確定等等，這些預處理和后處理工作是演算法有效實施的必要保證，正是基於這樣的認識，本文利用較大的篇幅對水印的基本理論知識進行了詳細的分析和研究，在水印的調制方面，提出了混沌調製法；在圖像水印的置亂方面，提出了混沌置亂法；在文字水印的處理上，引入了bch編碼；在水印容量分析方面，結合現代通信理論，對圖像在dct域和小波域內的水印容量估算進行了詳細的探討，這些工作不僅為本文後期工作鋪平了道路，而且對數字水印的研究具有重要的意義。Theory analysis of the leaky communication in underground and discussion on actualizing projects of the system
井下漏泄通信理論分析及系統實現方案探討( 2 ) : combine watermarking tech and communication theory to research robustness of watermarking
（ 2 ） ：把水印技術與通信理論相聯系，以研究水印技術的魯棒性問題。In information theory and communication theory, an ordered series of characters intended to convey information
在信息論和通信理論中，用來傳遞信息的一種有序的字元系列。In communication theory, that part of a communication system that connects the message source with the message sink
在通信理論中，指通信系統中連接信息源和信息接收器的部分。After advancing an improved method and using it into the unb communication theory again, we find the right result
提出了改進的辦法，並將其運用於超窄帶通信理論，得到了正確的結果。It is involved with the theory of spread spectrum communication, the theory of missile controlling and guiding, and corresponding practical digitized technology
研究涉及擴頻通信理論、制導理論及相應的實用數字化技術。The second approach used for traitor tracing, combines cepstrum features with spread spectrum theory. no original image but the key is required for watermarking extraction
第二種演算法可用於非法源跟蹤，它將倒譜特性與擴頻通信理論相結合，水印提取時只需要密鑰而不需要原始圖像。The design on twice civil air defense alarm system in this paper adjoint spread spectrum technology and scm technology based on spread spectrum communication theory to realize remodel of once cvivil air defense alarm system
本文設計的二次人防警報就是在擴頻通信理論的指導下，將擴頻技術和單片機技術相結合對一次人防警報實現改型。Then we use lifting scheme improve wavelet analysis methods and proposed a kind of digital watermark algorithm based on error - correcting coded which is a method of communication theory and is to correct watermark signal
然後在這一水印演算法的基礎上，使用小波提升技術來改進小波分析方法，再使用通信理論中的糾錯編碼方法對水印信號進行糾錯控制，並提出了一種基於糾錯編碼的數字水印演算法。Quantum cryptography ( qc ) is the combination of classical cryptography and quantum mechanics. the characteristics of quantum mechanics, such as no - cloning theorem and heisenberg ' s uncertainty principle, provide the perfect secrecy for quantum cryptographic communication
量子密碼學是密碼學與量子力學結合的產物，利用量子不可克隆定理和海森堡測不準原理等量子特性，量子密碼通信理論上已經證明是絕對安全。As a result, the ternary optica l fiber communication theory was established, and therefore introduced a new and safer method to transmit secret key
並把這個理論應用到光纖通信領域，建立了三值光纖通信理論，由此生成了新的密鑰傳送方法。The research in software radio is not more than ten years, but has made a great many fruits, but it is too little to set up an integrated theory system, and software radio includes many areas such as modern communication system ( which includes modem source / channel encoding and decoding, equalization, encrypt and decrypt and so on ), wideband antenna theory, digital signal process, microelectronics, computer and so on. this thesis mainly does research for modem in modem communication
軟體無線電經過不到10年的研究，盡管取得了很多成果，但是對于建立一套完整的理論體系來說，還遠遠不夠，況且軟體無線電涉及的領域多、面廣、發展快，如現代通信理論（含調制解調、信源通道編解碼、均衡、加密解密等） 、寬帶天線理論、數字信號處理、微電子、計算機等。分享友人