Underwater data communication system s synchronization signal processing 水聲數(shù)據(jù)傳輸系統(tǒng)中的同步信號(hào)處理
Two new speech detection methods based on neural networks using barker coded synchronization signal are presented 提出了兩種采用巴克碼編碼同步信號(hào)并基于神經(jīng)網(wǎng)絡(luò)的起點(diǎn)檢測(cè)新方法。
In this issue the different schemes mentioned above will be analyzed and the results are described by synchronization signal distribution intuitively 通過(guò)分析,比較了兩種不同同步機(jī)制的不同性能,并用同步分布的方式對(duì)結(jié)果進(jìn)行了直觀的表達(dá)。
It is conceived to introduce barker codes as synchronization preamble and add synchronization signal in front of speech signal to implement speech detection . the principle of this idea is presented 提出了引入barker碼作為同步碼,在語(yǔ)音信號(hào)前添加同步信號(hào)以實(shí)現(xiàn)起點(diǎn)檢測(cè)的工作設(shè)想,并介紹了其同步原理。
The system employs multicarrier modulation ( mcm ) technique as the modulation method , and linear frequency modulation ( lfm ) signal as the synchronization signal and digital signal processor ( dsp ) as the hardware ' s core chip 該系統(tǒng)選用多載波調(diào)制技術(shù)進(jìn)行調(diào)制,選用線性調(diào)頻信號(hào)為其同步信號(hào),選擇數(shù)字信號(hào)處理器為硬件核心芯片。
Synchronized drive module produces horizontal drive signal in synchronization with horizontal synchronization signal and field drive sawtooth in synchronization with vertical synchronization signal . these signal drive scaning sytem of slltv 同步驅(qū)動(dòng)模塊產(chǎn)生與行、場(chǎng)同步的行同步驅(qū)動(dòng)信號(hào)和場(chǎng)鋸齒波驅(qū)動(dòng)信號(hào),用于驅(qū)動(dòng)激光電視的掃描系統(tǒng)。
The results of experiment tell it is an effective method of share current . a strategy of synchronization control , which combines competition coequality and priority , is mentioned in the paper and uses digital phase - lock loop to track synchronization signal 在同步控制上,應(yīng)用了“優(yōu)先與搶占”的方式產(chǎn)生同步信號(hào),純硬件實(shí)現(xiàn),簡(jiǎn)單可靠;使用了成熟的數(shù)字鎖相環(huán)來(lái)跟蹤同步信號(hào)。
Therefore , it is necessary to mount timing system alone in synchronization network node and the place where there are more telecommunication equipments and the important hinge , which supplies the primary synchronization signal conformed to the standard 因此,有必要在同步節(jié)點(diǎn)處或通信設(shè)備較多的地方以及通信網(wǎng)的重要樞紐處,單獨(dú)設(shè)置時(shí)鐘系統(tǒng),對(duì)所在的通信樓的設(shè)備提供合乎標(biāo)準(zhǔn)的同步基準(zhǔn)信號(hào)。
Synchronization is the commander of every digital communication system , without it the system is unable to work orderly and correctly . a five - tuple of time - frequency diversity is adopted to guarantee that the synchronization signal be retrieved reliably in the receiver 同步是任何數(shù)字通信系統(tǒng)有序工作的“指揮棒” ,本研究采用5重時(shí)頻分集的方法,使得在接收端能夠可靠地恢復(fù)出系統(tǒng)工作所需要的同步信號(hào)。
Bits supplies the synchronous timing signal to these equipments inside the telecommunicationt building , such as dps , atm , no . 7 , dxc , tm & adm in sdh , don and in etc . the related techniques are involved in the content of synchronization ne twork , timing distribution , the timing signal transportations x impairments etc . the second chapter tells the structure and the function of the building integrated timing system . the third chapter summarizes the digital synchronization network techniques , which emphasizes the basic concept of synchronization networks analyzes the necessity of building the synchronization network and introduces all kinds of synchronization methods . the fourth chapter represents the transportation of the synchronization signal 本文第二章講述了通信樓綜合定時(shí)系統(tǒng)的構(gòu)成及作用:第三章概述了數(shù)字同步網(wǎng)技術(shù),著重描述了同步網(wǎng)的基本概念,分析了建立同步網(wǎng)的必要性,講述了各種同步方法;第四章闡述了同步定時(shí)信號(hào)的傳輸;第五章介紹了bits設(shè)備所支持的同步狀態(tài)消息;第六章、第七章為本文的重點(diǎn),通過(guò)對(duì)時(shí)鐘信號(hào)建立數(shù)學(xué)模型,從理論上分析時(shí)鐘內(nèi)部噪聲和相位瞬變產(chǎn)生時(shí)鐘定時(shí)信號(hào)損傷的原理,企圖尋找到更好地控制頻率漂移的方法。