dynamic equalizer 中文意思是什麼
dynamic equalizer
解釋
動態均衡器-
三. dynamic gain equalizer ( dge ) based on volume phase grating ( vpg ). edfa ' s gain spectrum has dependence on the edfa ' s operate point
Edfa在不同的工作狀態具有不同的增益譜，這就要求增益補償器件的增益譜形狀要隨edfa工作狀態的不同而發生變化。 -
A dynamic gain equalizer device including control circuit, mechanical structure and control program was designed using a cooler and a pzt. a dynamic gain equalizing experiment of the edfa using the designed dynamic gain equalizer was accomplished, and a 1. 2db flatness in the range of 32nm at c - band was obtained. finally, some future improvements were discussed in this
Iv .設計了一種利用製冷器和壓電陶瓷等來實現動態增益均衡器的裝置，設計了控制電路、機械結構和演算法程序，用這個動態增益均衡器對edfa的增益輸出譜線進行了動態增益實驗，實驗結果基本滿足要求，根據實驗結果，文中還討論了一些改進方案。 -
The proposed algorithm lows the complexity by choosing decision delay in advance and then making solution of the equalizer tap coefficient, a new decision delay choice method is proposed, solution by using weight method, diagonal matrix transform, z extension and a new energy restrictive condition which restrains noise enhance, a new decision delay choice method is proposed, the simulation result shows that the proposed algorithm has better equalization effect and enhanced performance comparing to the general mmse algorithm, simulation research on the precision and dynamic scope of parameters in digital realization time domain equalization algorithm, design software and hardware of time domain equalizer. fourthly, there exist a lot of interfere in dsl line, especially, dsl works in multi - user mode, the near end interference is serious
通過先選擇判決時延，再進行時域均衡器抽頭系數求解的方法降低了時域均衡計算復雜度；對于均衡器抽頭系數的求解使用了加權技術，通過對角矩陣變換， z擴展，使用不同的能量約束條件對演算法求解，結果表明這種約束有效的抑制了噪聲增強，與常用刪se比較，該演算法有更佳的均衡效果，演算法性能得到了提高：論文還對數字化實現時域均衡演算法中每一部分參數的精度、變量的動態范圍進行了模擬研究，對時域均衡的軟硬體實現進行了設計。 -
New algorithm and new structure have been developed to make the equalizer to get better performance on combating with seriously distorted channel fading : strong echo fading, large delay spread static and dynamic echo fading. main contents of this paper are as follow : in the first chapter, the history > present situation of the dtv system is presented. five dtv terrestrial broadcasting systems are introduced and two of them are compared, e. g
本文主要內容如下：第一章概述了數字電視技術的發展歷史和目前的狀況，給出了目前已經成型的5種地面廣播標準；對兩種比較典型的傳輸標準： dvb - t和atsc作了性能對比分析，並將比較的焦點集中到對抗強多徑衰落和長時延的靜態和動態多徑衰落的性能上。
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