通信干線 的英文怎麼說

中文拼音 [tōngxìngānxiàn]
通信干線 英文
axis of communication
  • 通 : 通量詞（用於動作）
  • 干 : 干Ⅰ名詞1 （事物的主體或 重要部分） trunk; main part 2 （幹部的簡稱） short for cadre Ⅱ動詞1 （做...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 通信 : communication; communicate by letter; correspond
  1. But there is much disturb and cacophony on power line, using commonly communication ' s mode is difficult to attain reliability ' s demand

    但是由於電力線上的干擾及雜音比較大，採用普通的通信技術很難達到可靠性的要求。
  2. Finally, the anti - jamming method of the wireless induction communication system is researched and studied. and the ideas to improv the performance is brought forword

    最後對無線感應通信系統的抗干擾處理進行了探索和研究，提出了下一步的改進思路。
  3. As a combination of ofdm with space - time coding technique, mimo - ofdm becomes more and more important in the future wireless communication systems, the mimo - ofdm system can not only effectively enhance the transmission rate and capacity of the wireless communication system but also greatly mitigate the effections of mufti - path fading and interfere

    Mimo - ofdm技術將ofdm與空時編碼技術有機的結合在一起，能夠大幅度的提高無線通信系統的通道容量和傳輸效率，並能有效的抵抗多徑衰落、抑制干擾和噪聲。
  4. Interference. gps signals are received by the antenna, amplified within the antenna assembly, and then relayed via cable to the oncore receiver module for processing

    這種天線的設計反映了motorola對高標追的追求，即使再有電磁干擾的情況下操作， gps信號通過天線接收，在天線內置放大通過線纜傳輸到oncore接收器上進行數據處理。
  5. The nonlinear filtering for nbi estimate - subtract assumes that the prediction error is dominated by spread spectrum signal and the background noise power is far below spread spectrum chip power, this assumption promises the low error ratio of chip decision but may not be attainable to digitalized dsss receiver in military communication environment, and does not coincide with the principle of dsss communication that decreases bit error ratio ( ber ) depending on spread spectrum gain, not on chip power

    在干擾估計抵消濾波中，以往的非線性濾波要求干擾抵消濾波后擴頻信號功率遠大於殘余噪聲功率，進而假設碼片判決的誤碼片率基本為零，這一要求對軍用擴頻通信是不利的，而且也不符合擴頻通信利用擴頻增益降低誤碼率的原則。
  6. The automatic identification of the modulation types has been applied to many fields such as source identification, interference identification, radio interception, - electronic countermeasures, etc. the modulation recognizer based on the decision - theoretic approach and the constellation diagram is proposed and the signal ' s kurtosis is used as the indicator to differentiate the analogue modulation from the digital modulation

    通信信號調制類型的自動識別廣泛應用於信號確認、干擾辨識、無線電偵聽、電子對抗和信號監測等領域。本文提出基於決策論與星座圖的綜合調制識別器，使用信號的峰度區分調制類型是模擬調制還是數字調制。
  7. The wireless channel based on spread spectrum modulation can assure the digital video signal communication safe and withstanding the high noise disturbing condition

    而基於擴頻技術的無線通信通道，為視頻的傳輸提供了保密及抗干擾性能強等優點。
  8. In the next generation of wireless communication, the base station antenna should have these functions : integration of different diversity methods to release multi - path fading, beam - downtilt to reduce co - channel interference, beam - forming to optimize coverage

    在設計新一代移動通信基站天線時，應使天線能綜合各種分集方式進行天線分集以消除多徑效應，具有波束下傾以減少同頻干擾，能波束賦形以實現優化覆蓋。
  9. The potential applications of amr include both civil and military communication, especially non - cooperative communications and communication confrontation, such as identifying signals, supervising signals, distinguishing interference, electronic confrontation, analyzing military threat, etc. on the basis of our analysis to the existing research on feature abstraction, the related feature abstraction methods are optimized in this paper, resulting several effective methods such as the feature abstraction based on transformation domain, stepped voltage level analysis, normalized carrier - free spectral energy analysis, squared signal and fourth powered signal analysis, etc. both the decision theory based on recognition algorithms and the artificial neural network ( ann ) based on recognition algorithms is analyzed, and the former is selected as it is more appropriate for this research

    調制類型的自動識別廣泛應用於民用通信與軍用通信，尤其是對于非合作性通信、通信對抗，比如：信號確認、信號監控、干擾辨識、電子對抗、軟體無線電、電子救援、通信對抗、軍事威脅分析等。本論文在分析現有研究的基礎上，借鑒了已有的特徵提取方法，對相關調制類型特徵提取方法進行了優化，使用了一些有效的方法，如基於變換域特徵提取方法、梯層電平分析方法、剔除載波后的歸一化頻域能量分析方法、信號平方后的頻譜分析方法、信號四次方后的頻譜分析方法等。通過對基於決策理論和基於人工神經網路兩種識別演算法進行分析，本論文選擇了較適合的基於決策理論的識別演算法。
  10. 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。
  11. According to the principle of spread spectrum communication, the anti - interference performance of the technology is discussed and the composition of power line spread spectrum communication is described. based on the spread spectrum technique, a method which is low cost, high communications quality and low bit error for power line carrier communication using single - chip software programming is proposed

    利用擴頻通信原理，分析擴頻通信的抗干擾特性，在此基礎上，闡述了電力線載波通信系統的基本結構，提出了一種利用軟體編程實現電力線載波擴頻通信的方法。該方法不增加硬體成本，即能達到提高通信質量、降低誤碼率的目的。
  12. The criteria for site selection were very strict. because of the sensor s high sensitivity, there should not be electromagnetic interference and building obstructions around the site. there is also the need for appropriate communication lines at the site

    閃電監測站之選址要求嚴格：由於探測儀器非常靈敏，附近不能有電磁噪音干擾，四周必須極少阻擋，並且要有相應的通信線路配合等。
  13. Smart antenna has been widely researched in communication and signal processing, the adaptive beamforming algorithm is the key technique of smart antenna. it could adaptively steer the array directional pattern to form the main narrow beams with high gain in the direction of the users " signals while deeply nulling the interference signals. it is an effective way to realize the optimal receiving of the interesting signals

    智能天線技術是目前通信和信號處理等領域的研究熱點，自適應波束形成演算法的研究是智能天線的一個關鍵技術，它能夠自適應地控制天線陣方向圖在用戶信號方向產生高增益窄波束，在干擾信號方向產生較深的零陷，是實現用戶信號最佳接收的有效方法。
  14. Tgcp ipcablecom trunking gateway control protocol

    個人間電纜通信干線通路控制協議
  15. The telephone communication requisitions in factory are not satisfied, so a new type of factory communication system should be developed

    為此需要研製一種具有撥號功能、可撥打外線、對其他非被叫用戶無干擾、並具有較高通信針對性新型電話通信系統。
  16. 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。
  17. Telephone transmission interference allowances for long - distance high - capacity analogue microwave communication systems

    大容量長距離模擬微波通信干線電話傳輸干擾容限
  18. The cables are designed for main communicationlines of mining wells, streets, etc and connecting cables betwwen connecting box and telephone

    本產品適用於固定敷設在礦井、巷道等作通信干線及分線箱與電話機的連接線。
  19. This paper based on the project that supported by the funds of beijing science and technology committee. the project is a broadband community network management based on hfc

    發達的信息通信干線將高速寬帶網路送到每一個社區，而社區局域網又將高速寬帶網路送到了每一個家庭。
  20. Devices installed on high voltage equipments work under the control of single - chip computer of intel 80c196kb. rs485 is chosen as physical standard of the communication system. it has excellent performance of anti - interference and a very low cost. to ensure the host computer can reliably communicate with all devices, we formulated a flexible communication protocol

    本系統現場智能裝置採用inte180c196單片機系統，通信總線採用了抗干擾能力很強，並且非常經濟的rs485總線，我們編寫了一套完善的通信協議，能很好的滿足系統工作的需要。
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