equal signal system 中文意思是什麼
equal signal system
解釋
等信號無線電導航系統-
Fpga and dvb standard are introduced firstly, dvb - c standard and composition of its system are analyzed completely, development of modulator structure and dvb - c digital modulator composition are presented, more over, analysis of respective modular are given. then, principle of dvb - c digital modulator system are presented, they are error control technique 、 mqam 、 nyquist rule and root raised cosine filter 、 window design method for fir filter 、 multi - rate signal processing ( integer interpolating, conversion of fractional sampling, equal conversion of net structure, polyphase structure for filter, poly - phase structure for interpolator, multi - stage implementation of samplying conversion ) 、 distrubited algorithm 、 cic filter 、 dds 、 cordic algorithm
接著，專門利用一個章節闡述了dvb - c前端調制系統原理，他們了差錯控制技術、多進制調制（ mqam ） 、 nyquist準則與平方根升餘弦濾波器、有限沖擊響應濾波器的窗函數設計法、多抽樣率信號處理包括（整數倍內插原理、分數倍抽樣率轉換、網路結構的等效結構、濾波器的多相表示、內插器的多相表示、抽樣率轉換的多級實現） 、分散式演算法、 cic濾波器、直接數字頻率合成（ dds ） 、 cordic演算法。 -
At the same time, it uses a frequency translator to obtain a frequency shift, which is equal to the brillouin frequency in fiber. then the detecting pulsed light and the cw reference light can coherent. this method greatly improved the system ’ s sensitive and signal to noise ratio ( snr )
同時在探測光路中引入一個光移頻環路，使探測光移頻后再經光纖中布里淵頻移，其後向布里淵散射光頻率與參考光束大致相當，可進行相干自外差探測，大大提高了系統的探測靈敏度以及系統的信噪比。 -
Supposing chaotic ds - spread spectrum signal bandwidth is equal to the fh slot spacing, the bit error rate formula is derived, and its performance is evaluated and simulated assuming the worst case of jamming strategy. the results show that, in some cases, the addition of chaotic ds spreading to fh system, without increasing total system bandwidth, can improve significantly the system ' s resistance to partial band multitone jamming
對最惡劣條件下系統的抗干擾性能進行了模擬研究，結果表明，在某些情況下，在慢跳頻系統中，加入混飩直擴成分，即使不增加系統帶寬也能有效地改善系統對抗部分頻帶多頻干擾的能力。 -
We deduced that mek1 pass down an apoptosis signal in the experiment system. mekk1 expression level was assayed by rt - pcr, after il - 16 treat target cells for 24 hours, all treatment has me equal quantity expression of mekk1, including the control ; while, when the time up to 48 hours, the induction effect eliminate
用rt ? p口又方法對sapk途徑中的mkki進行檢測，結果表明，不同劑量il一工6作用於靶細胞2斗fir ，都明顯誘導fi4lzki 1的表達，而作用時間延長到48k ， il ? 16對它的誘導作用消失。 -
This article proposes the adaptive algorithm based on equal snr signal noise ratio, and applies it in adaptive ofdm system. in frequency selective fading channel, compared with the traditional ofdm system based on equal power allocation, the system outperforms in ber bit error ratio performance
提出了一種基於最小平均誤碼率的自適應預處理演算法，並將該演算法應用於自適應ofdm系統，在頻率選擇性衰落通道條件下，與等功率分配的ofdm系統相比，誤比特性能有了很大程度的提高。
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