constant channel 中文意思是什麼
constant channel
解釋
恆參通道-
A complementary input stage, which consists of a p - channel pair and a n - channel pair, was used in the circuit, so that the common mode input range can extend from rail to rail. a dcls is used to shift the n - transistor curve leftward to overlap the p - transistor curve properly and keep constant transconductance in the whole common mode input range
輸入級採用pmos差分輸入對和nmos輸入差分對並聯的結構，從而實現共模輸入范圍擴大到電源的正負兩端，並且通過兩個源級跟隨器平移nmos輸入管跨導曲線，使nmos輸入管和pmos輸入管跨導曲線的適當交疊，從而保持了這個輸入級的跨導在整個共模輸入范圍內保持恆定。 -
First, in the subsystem, the blade was optimized according to genetic algorithm with the meridional channel remained constant
首先，在子系統內保持子午流道形狀不變，利用遺傳演算法對葉片進行優化。 -
So it holds a ideal ability to anti - interference and has 2 scalar level resolution in location and measuring velocity than traditional radio induction technology. and the channel composed of the new radio induction system for communication is different from the parameter - constant channel and the traditional parameter - changing channel, its parameter is decided by the mutual induction between its antenna and induction - cable, by the location of its antenna, by the signal frequency passing through, its parameter has nothing to do with the time parameter. the channel composed of the new radio induction system is a new parameter - changing channel independently of time for communication
而且，由新型無線感應系統組成的通道既不是恆參通道，也不是一般目前所知的變參通道，其通道傳遞函數的幅值只與信號的頻率有關，與系統中天線和感應電纜之間的互感和天線的位置有關，而與時間無關，其通道傳遞函數的相位只與天線的位置有關，而與時間無關，由新型無線感應系統組成的通道是一種不隨時間變化的新型變參通道。 -
The amazing character of the quantum capacity of gaussian channel is that planck constant h takes over the place of input power restriction of classical capacity
高斯通道量子容量的迷人特徵是普朗克常數h取代了經典容量中輸入信號功率限制條件的位置。 -
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。 -
The multistage constant modulus ( cm ) array is a cascade adaptive beamforming system that can recover several narrowband co - channel signals without training. the main idea of the smi - cma is to use smi to determine the initial weight for cma operation. the method can come up with the desire signal in despite of the interfering signal is stronger than the desire signal
基於以上考慮，我們提出了基於smi - cma聯合自適應方法，該演算法可以分離多個同通道信源，由smi演算法決定cma演算法的初始權向量，在干擾信號較強時，仍有穩定的sinr輸出，具有較快的收斂速度。 -
From the research of ijf - oqpsk, we draw the conclusion that, compared with bpsk, qpsk and msk modems, in the band - limited and non - linear channel, it has nearly constant envelope, less spectral spreading, better pe performance and the less interference of the adjacent channel, et. so, it is more suitable for the satellite communication channel
通過對ijf ? oqpsk的分析研究可知，它相對于傳統的bpsk和qpsk調制方式，在帶限非線性通道下，具有包絡近似恆定，頻譜擴展小， eb no惡化小，對鄰道產生干擾弱等優點，因而它更適合於衛星通道。 -
We studied many methods to improve the tcp / ip in wireless environment, such as tcp / ip initial slow start algorithm, initial window and retransmission time out ( rto ) estimate. finally, we consider the round - trip time ( rtt ) with the physical layer and the transfer layer combined together. physical layer using rtt related to the channel state and transfer layer using the constant rtt, the interference between the two layers can be eliminated, and so the effectiveness of the wireless data link can be enhanced
研究了tcp ip的慢速啟動演算法、初始窗口、重傳超時估計以及改善無線tcp ip性能的各種方法，提出了一種把物理層鏈路和傳輸層相結合處理往返時間（ rtt ）的方法：物理層鏈路採用與通道相關的動態rtt ，傳輸層採用常數rtt ，消除了兩層rtt之間的相互干擾，從而提高了無線鏈路的利用率。 -
It has better output current accurate than normal 8 - channel - led driver ic with constant current, more output channels and better output current regulate accurate
它相比以往常用的8通道led恆流驅動器，具有更強的多通道驅動能力、更優的輸出電流調節精度以及更高的電流匹配精度。 -
The push - model is ideal for applications capable of maintaining a constant connection or listening channel through which messages can be pushed
推動模型是應用程序有能力保持固定連接或監聽消息傳遞的通道。 -
The main working contents of this paper is following : 1 according to the theory of electromagnetic induction law, a new radio induction system is proposed based on the traditional radio induction technology, analyzed on its signal transmission character and its frequency spectrum character. the channel composed of the new radio induction system is compared with the parameter - constant channel and the parameter - changing channel. the application of the new radio induction system is studied in converter supply
本文的主要工作內容如下： 1在現有的無線感應技術基礎上，基於電磁感應理論，提出了新型無線感應系統，分析了新型無線感應系統的信號傳輸特性，分析了新型無線感應系統的頻譜特性，把新型無線感應系統組成的通道和恆參通道、變參通道進行了比較，研究了新型無線感應系統在變流器供電中的應用。 -
Future mobile communications have to support the transmission of high rate data and multimedia applications in the radio spectrum, which is already extremely scarce. the basic idea of adaptive coded modulation is to maintain a constant throughput by varying the transmitted power level, symbol transmission rate, constellation size, coding rate or any combination of these parameters. thus, without sacrificing bit - error rate ( ber ), these schemes provide high average spectral efficiency by transmitting at high speeds under favorable channel conditions, and reducing throughput as the channel degrades
自適應編碼調制（ adaptivecodedmodulation ， acm ）的基本思想是在不犧牲系統傳輸性能（比如ber ）為代價的前提下，通過單獨改變發送功率、波特率、編碼方案、碼率、調制方式，或者是綜合改變前面所述的各種參數，在有利的通道條件下，獲得較大的吞吐量，當通道質量下將時，相應地降低傳輸速率，最終達到提高平均頻譜效率的目的。
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