查询词典 method of quadrature

The pair error probability performance in quasi-stationary fading MIMO channel and design rules for multiple quadrature amplitude modulation constellations are also analyzed.

提出一种结合低密度校验码和空时分组码的置信传播编码调制方案，并对其在准静态MIMO衰落信道下成叶差错概率及最优星座选择进行了分析，并给出了相应的参考设计准则。

In the last new years , as the demands of wireless communication system grows rapidly , the bands of microwave frequency had been saturated with various communication applications . To achieve wider spectrum for high-speed and high-capacity transmission , bands of millimeter-wave frequency are the solution of this problem . The advantage of MMW wireless communication systems is wider bandwidth comparing with microwave communication systems . To utilize the spectrum efficiently , many methods of complexly digital modulation is proposed . The more complex modulation , the higher linearity is required , and more various phase of signals are required to accomplish process of modulation . Therefore high-linearity and quadrature-phase modulator and demodulator are the emphasis of this thesis . For high level of integration , high performance and low cost , this chip is fabricated by the complementary oxide semi-conductor 0.13um process . A compact size of direct down-conversion and direct up conversion circuits will be presented in this thesis .

近年来随著无线通讯产业的蓬勃发展，微波频带已经趋近於饱和，为了追求更宽的频谱来达到更快传输速率及高资料容量的传输，宽频的毫米波频段提供了解决此问题的途径，毫米波无线通讯系统提供了相对於微波通讯系统宽频的优点，且为了更有效的使用频谱，各种不同且复杂的数位调变方式及方法被发表出来，越复杂的调变方式其所需的线性度越高，且需要更多不同的相位讯号来完成调变的过程，因此高线性度及四相位的调变及解调器将是此篇论文的研究重点，为了达到高整合性，高效能，及低成本的电路设计，我门利用互补式金氧半导体制程来完成此电路设计，因此一小面积的直接降频(Direct down-conversion)及直接升频(direct up-conversion)电路将在文中介绍。

Changing temperature velocity in inner barrel is not a stable constant, and it will vary with advancement of measuring from time to time, thus cooling emendation quadrature model is established to compensate temperature dissipation.

通过引入牛顿冷却定律，较好的解释了热交换造成的量热系统温度变化，并就恒温式氧弹仪具体结构及实验条件分析了影响量热系统热量散失的因素。

Too much emphasis has been laid on thephase coherence detection using the arithmetics of auto-correlation in time domain,spectrum analysis in frequency domain and feature extraction of intra-pulse modulatedsignals employing the methods of quadrature in time domain、Short Time FourierTransform、Wigner-Ville Distribution and Radon-Wigner Transform.

本文详细介绍了脉冲多普勒雷达的原理及其信号特征、相参性原理、脉内调制信号、时频分析理论和模式识别理论等，重点讨论了利用时域自相关法和频域谱线分析法进行相位相参性的检测；详细分析了脉内调制特征提取的几种方法，主要包括时域正交、短时傅立叶变换、维格纳分布和 Radon-Wigner 变换。

Person in, with " run run calorie of Ding Che " most low-key, whats don't have almost negative news, doing the eldest child silently " run run calorie of Ding Che " did not devote oneself to to raise odd user month to consume, and " street basketball " also compete because of what do not have congener product medium all the time the quadrature in compasses, among them " powerful dance with sth in one's hands is round " with high spending, much more negative flourish rises recreational net to swim the head medal that exposure leads.

三者中，以《跑跑卡丁车》最为低调，也几乎没有什么负面新闻，默默的做着老大的《跑跑卡丁车》并没有致力于提高单用户月消费，而《街头篮球》也因为没有同类产品的竞争一直中规中矩，其中《劲舞团》以高消费，多负面荣升休闲网游曝光率的头牌。

By the way, when the moon is at first quarter phase, it is also at eastern quadrature – or 90 degrees east of the sun.

顺便，当月亮在第一个季相时，他也会处于东方正交，或者太阳东部90度。

By the way, when the moon isat first quarter phase, it is also at eastern quadrature – or 90degrees east of the sun.

顺便说一下，当月亮在第一相位时，它同时也在太阳的东方90°正交处，就是说与太阳东方成90°。

The basic principle of quadrature system was given with the architraves of system and derivation of expressions.

勿s忱mview是一个用于数字信号处理和通信'系统设计的仿真软件，功能强大。

The first use switched transmission line or quadrature hybrids cascaded with different switchable termination's.

一种使用交换传输线或有不同切换终端的级联正交混合线。

Report : Programming Environment : Newton MATLAB7 K polynomial interpolation procedures to achieve Romberg of Quadrature program Gaussian out PCA Elimination of the program.

详细说明：计算方法实验报告：编程环境：MATLAB7.0 牛顿K次插值多项式的程序实现龙贝格求积公式的程序实现高斯列主元消去法的程序实现。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。