synchronization channel 中文意思是什麼

synchronization channel 解釋
同步通道
  • synchronization : n. 同時；同時性；【物理學】同步，同期；【電影】同期[步]錄音，配音譯制。
  • channel : n 1 水路，水道，渠，溝；海峽；河床，河底。2 （柱等的）槽，凹縫；【機械工程】槽鐵，凹形鐵。3 〈比...
  1. It is composed of three mian protocols : call synchronization protocol, control frame transmission protocol based on arq mechanism and data transmisstion protocol based on slot precontract mechanism. one scan channel table is shared in the hfmanet. the nodes in the same dwell group work in the same scan channel, and the nodes in the different dwell group work in the different scan channel

    該協議的網路拓撲結構採用分散式分群結構，協議不同於傳統的短波點到點及需要中心節點轉發的組網方式，而是初步實現了短波電臺之間多跳組網功能，其協議內容主要包括同步呼叫協議、基於arq的控制幀傳輸協議和基於虛電路及時隙預約方式的數據幀傳輸協議。
  2. ( 2 ) a new synchronization method based on barker code is designed which is simple, effective for uwb system. ( 3 ) a new channel estimation method based on music algorithm is given, which is compared with ml algorthim. and the effection is proved by

    （ 3 ）採用數學公式推導出基於music演算法的通道估計的理論公式，得出了模擬結果，將其與較為成熟的ml演算法比較，並在實測數據中加以驗證。
  3. Through a lot of experiments and simulations, analyzing the uwb channel model, studying on many papers, a new synchronization algorithm based on barker code and a new channel estimation method based on music algorithm are given. the simulation results of synchronization algorithm in which uwb channel model is used are gotten, and the channel estimation algorithm is demonstrated by measurement data. anyway, both of them get good conclusions

    本文通過大量的模擬以及實測的數據分析了通道模型，在參考了大量文獻的基礎上給出了較為實際的同步方法和通道估計方法，並進行了大量的模擬驗證，其中同步方法在結合通道模型的基礎上給出了模擬結論，通道估計方法最後應用於實測數據當中，得出了較為理想的結果。
  4. If there is a node need to communicate the other node, it has to calculate the other node ’ s scan channel which will be it ’ s call channel. the call synchronization protocol will be implement to fulfill the end - to - end link establishment

    網內若有節點需要和其他節點建立點到點連接，主叫節點便使用同步呼叫協議在呼叫通道上實現點到點的鏈路建立。
  5. 8b / 10b encoding adapt the characteristic of fiber channel very well, it has been used in high - speed fiber transmission broadly. it avoids the appearance of continuous “ 1 ”, “ 0 ”, offers plenty of bit synchronization time information, enhances the stability of output light signal, reduces interference between signals and offers proper redundancy to check error through transmission

    它避免了連「 1 」 、連「 0 」碼的出現，提供了豐富的位同步定時信息，減少了直流基線漂移，提高了光輸出功率的穩定性，減少了高低頻分量，改善了信號間的串擾，提供了適當的冗餘，便於檢測系統傳輸中帶來的錯誤。
  6. Also it could realize the call processing function in cooperation with other exchanges via its stm - 1 interface. we suggest that ericsson further improve the frame synchronization detection feature and the s1 byte display feature on its stm - 1 exchange interface, and add far - end error indication on the multiplexing segment and low - order and high - order channels and far - end out - of - work indication on the low - order channel

    建議愛立信交換機stm - 1介面完善其幀同步檢測功能和s1位元組顯示功能，並增加復用段遠端差錯指示功能、高階通道遠端差錯指示功能、低階通道遠端差錯指示功能和低階通道遠端失效指示功能等傳輸告警功能。
  7. It was proved that shanghai bell s p3s exchange could not terminate some alarm overhead bytes. instead, it sent back those bytes to mistake local errors for far - end faults. we suggest that shanghai bell terminate such bytes, improve the frame synchronization detection function and the processing of s1 bytes, and add far - end error indication on the multiplexing segment and low - order and high - order channels and far - end out - of - work indication on the low - order channel

    測試結果表明，上海貝爾p3s交換機不能夠終結某些告警開銷位元組，而是將這些位元組進行回傳，從而將本端的錯誤誤認為是遠端的錯誤，建議上海貝爾p3s交換機按終結方式處理這些位元組，完善幀同步檢測功能和對s1位元組的處理，並增加復用段遠端差錯指示功能、高階通道遠端差錯指示功能、低階通道遠端差錯指示功能和低階通道遠端失效指示功能等傳輸告警功能。
  8. 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。
  9. The whole circuit ' s timing generation and synchronization was realized with cpld. as the channel of data transmitting, pof can isolate high voltage part and low voltage part efficiently. at the same time, a single chip processor was used to design a digital meter for the fiber current transducer

    系統採用cpld實現整個工作電路的時序發生和同步協調，利用光纖實現高壓部分和低壓部分的完全電氣隔離和實現信號傳輸，採用單片機技術實現混合式光纖電流互感器專用數字顯示儀表的設計。
  10. In this thesis, first, we present the theory of sess system, the generation of the sess spreading code and its characteristics and the acquisition theory of conventional spread spectrum communication system. an efficient acquisition scheme based on periodically transmitting the synchronization head, which is composed of binary chaotic codes, using the matched filter and automatic decision threshold - level control based on a so - called constant false alarm criterion for sess system is present. the acquisition model of sess system is built and simulated in the awgn channel, the raleigh fading channel and imulti - address interfere condition

    本文首先概述了自編碼擴頻通信的原理、自編碼擴頻序列的產生方法及其特性和擴頻通信系統編碼同步的理論，然後針對自編碼擴頻通信系統提出了擴頻序列捕獲方案:周期性地加入混沌序列同步碼，並採用恆虛警率匹配濾波器捕獲法;在加性白高斯噪聲通道、瑞利衰落通道和多址干擾情況下進行了模擬，分析了各種捕獲性能:在選擇性能最優的混沌序列、適當的序列長度、虛警概率及門限值的情況下，可以獲得較短的捕獲時間和較大的捕獲概率。
  11. In the new model, the legitimate partners can control the error bit rate of the eavesdropper ' s channel by adjusting their virtual binary symmetric channels. when our new model is implemented, the problem of receiving synchronization of the partners will not occur

    在該模型中，通信雙方使用虛擬的二元對稱通道來控制竊聽方接收通道的誤比特率，而且使用該模型也不存在信息接收同步的問題。
  12. Data synchronization for current differential protection based on optical fiber channel for ehv amp; uhv long transmission line

    特高壓長線路光纖縱差保護數據同步
  13. Data synchronization for current differential protection based on optical fiber channel for ehv amp; amp; uhv long transmission line

    特高壓長線路光纖縱差保護數據同步
  14. The goal of this thesis is to accomplish base - band channel coding / decoding, fh framing / de - framing and fh synchronization, and also to control the modulator and demodulator in the prototype system. all these functions are implemented with a tms320vc5409 dsp

    作為項目的一個重要組成部分，本文採用dsptms320vc5409實現了基帶處理部分的通道編解碼、跳頻意義的組拆幀和跳頻同步、並對調制解調晶元讀寫寄存器進行了配置。
  15. Chongqing expressway networking toll data communication network cotains 2 - ring and 8 - ray network structure based on expressway physical structure, setting up a trasmission trunk layer of sdh stm - 4 ( can be up - graded to stm - 16 ), and channel protection business entry layer consisting of sdh onu / olt stm - 1 ( can be up - graded to stm - 4 ). data exchange layer, through ip route exchange network above sdh network, forms 3 - level computer network structure of account settlement center - road section management company - toll station. to ensure obtaining original and reliable toll data from communication network, 2m circuitous chain is established between each toll station, accountsettlement center and road section management company, and also pstn dialing backup chain is set up between toll station and account settlement center. in order to maintain clock synchronization of the whole communication network, a proposal of sub - stage clock sychrononization signal network for differet network construction scale has been put forward in this design. in view of sensitivity and importance of toll data, this design particularly gives considerations of network safety and information safety for external and internel of network. therefore, communication safety, smoothness and reliability of networking toll system can be able to maintained in many ways

    重慶高速公路聯網收費數據通信網的結構是根據高速公路的物理結構構築了2環8射的網狀結構，建立了以sdhstm - 4 （可升級到stm - 16 ）的傳輸主幹層，以sdhonu / oltstm - 1 （可升級到stm - 4 ）組成的通道保護業務接入層。數據的交換層是在sdh網之上的ip路由交換網，形成了結算中心-路段管理公司-收費站之間的3級計算機網路結構。為從通信網路上保證收費數據的原始性和可靠性，每個收費站和結算中心、路段管理公司之間建立了2m迂迴鏈路，同時在收費站和結算中心之間建立了pstn的撥號備份鏈路。
  16. And their performances are compared by simulation. the realization of phase - coherent modulation is studied, especially the carrier recovery. in order to improve the system performance, we consider a receiver which performs optimal phase synchronization and channel equalization jointly

    本文詳盡的研究了線性和非線性自適應均衡器的橫向結構和典型演算法（ lms和rls ） ，對其性能進行了模擬比較；對相位相干調制解調技術的實現，尤其是載波恢復的方法進行研究，將載波恢復系統和自適應均衡器的參數調整聯合起來，從而提高相干水聲通信系統的性能。
  17. Each channel has independent synchronization and two powerful digital signal processing chips. one chip performs all the synchronization and sampling computations, while the other does the fast fourier transform of current and voltage signals sampled with 18 bit resolution. both current and voltage have separate but fully synchronized a d waveform capture sections

    就信號分析能力而言， 2503ah系列的最大特點是速度和精度，各通道均獨立同步及擁有兩片數字信號處理器晶元，當一晶元執行全部同步與取樣運算時，另一晶元則為已取樣的電流與電壓信號以真實18位解析度進行速傳立葉變換，電流與電壓具分離但完全同步的a d波形捕捉部份
  18. In additive white gaussian noise ( awgn ) channel, we introduce a method for synchronization of symbol timing and frequency for two - dimensional spread spectrum system without prior knowledge of spread spectrum matrix

    摘要針對加性白高斯噪聲通道，考慮未知二維擴頻矩陣的條件下，提出了一種二維擴頻系統的時頻同步方法。
  19. Frequency - domain equalization. at the same time discusses some key problems in ofdm : high ratio of peak - to - average power of output signals, problem of synchronization, channel estimation, adaptive bit, power and subcarrier allocation. emphasize on channel estimation, and present a new algorithm which can filtering more interpolation errors and noise. for the sake of improve the performance of resist narrowband noise and make efficient use of the spectrum apply malvar wavelet division

    同時就ofdm系統中的一些關鍵問題如峰值平均功率比（ papr ）太高，同步問題，通道估計，通道、比特與功率必須動態分配進行了研究，著重研究了通道估計問題並提出一種改進的方法，能濾除更多的噪聲分量和插值誤差，提高系統的性能；為了提高抗窄帶噪聲的性能和提高通道利用率，用malvar小波變換實現了不等帶寬分配。
  20. The latest and maybe most prominent system employing the ofdm modulation technique is the wlan standard ieee 802. 11a. this paper is about the algorithms of synchronization, channel estimation, equalizer and soft - information extraction in the ofdm receiver

    本文基於dvb - tcofdm方案，對ofdm系統接收機的相關演算法進行研究，重點放在同步（包括符號同步、頻率同步和采樣鐘同步） 、通道估計、均衡及解映射等幾個關鍵模塊上。
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