frequency division的例句大全

A novel microwave six-port network orthogonal frequency division multiplexing ( OFDM ) demodulator is presented in this paper.

该文提出了一种新的基于射频六端口网络的 多频带 OFDM 解调器.

The performance of a Multiple Input Multiple Output ( MIMO) system in ideal and non-ideal propagation conditions, which is established using Space Time Coding and Space Division Multiplexing techniques and operates in a wireless indoor environment in the 17 GHz frequency band is discussed.

讨论了MIMO系统在理想和非理想传输条件下的性能，系统工作在无线室内环境17GHz频宽内。

the problem of signal processing for direct sequence code division multiple access ( ds cdma) signal over multipath frequency selective mobile channels is considered. a new blind receiver is proposed.

本文研究多径频率选择性衰落信道下直接序列扩频码分多址（DS CDMA）信号的处理问题，提出了一种新型的盲接收机。

As the only system using Time Division Duplex in the 3G system, it has some advantages over systems of Frequency Divsion Duplex.

作为3G系统中唯一一个使用时分双工的系统，它具备了许多频分双工系统所不具备的优点。

In this paper, the wireless data radio takes the GPS differential positioning as a starting point, takes the FSK modulation mode, can complete the wireless transmission of data in S frequency band with the time division duplex operation mode.

本文设计的无线数传电台以用于GPS差分定位为出发点，采用FSK的调制方式，能在S频段以时分双工的工作模式完成数据的无线传输。

This system uses some key technology such as Low Chip Rate, Time Division Duplex, Smart Antennas and Joint Detection. The advantage of TD-SCDMA system includes: high frequency spectrum efficiency, flexible frequency using, applying to data service, low cost and so on.

该系统采用了低码片速率、时分双工、智能天线、联合检测等关键技术，具有频谱利用率高、频谱使用灵活、适合开展数据业务、系统成本低等特点。

Studying the radio frequency anti-collision algorithm, focusing on anti-collision algorithms based on time division multiple access methods in order to do a brief analysis, and studying bit-detection method based on the binary tree algorithm. 4.

对射频防碰撞算法进行研究，并注重对基于时分多址法的防碰撞算法依次做了简要的分析，并研究了基于二进制树算法的位检测方法。

With the deepening of the division of labor, economic transactions between actors and transactions increasing frequency of the object, the coordination and integration of layer breeding industry chain are particularly important.

随着分工的深化，经济行为主体之间的交易对象和交易频率增加，蛋鸡养殖产业链环节的协调与整合尤为重要。

The stabling center frequency technology for transmitter in wavelength division multiplexing system is very important.

波分复用系统光源中心频率的稳定技术是该系统的关键技术之一。

vsf-ofcdm variable spreading factor orthogonal frequency code division multiplexing

可变扩展因子正交频码分复用

The paper mainly put forward a new control method of stepping motor which character-, ized by equal-stepped fine division, and then design a constant frequency PWM driver circuit.

提出一种等步距角的细分控制方法，并据此设计了恒频脉宽调制细分电路。

The initiation of celi division in the case of cotyledon and mesophyll protoplast culture was late, usually at day 5, and the division frequency was also somewhat lower.

子叶和真叶原生质体起始分裂稍晚（第5天），分裂频率也较低。

This paper first introduces the basic structure and line code of VDSL, and then analyses two kinds of main modulation methods for VDSL, including time division du plex ( TDD) and frequency divi-sion duplex ( FDD).

首先介绍了超高速数字用户环路（VDSL）的基本构造和线路编码，然后分析了VDSL的主要两种调制方法，即时分复用（TDD）方式和频分复用（FDD）方式。

While this division of the frequency spectrum works , said Goldsmith, it's not infallible.

戈德史密斯表示,这种频谱划分方式尽管行之有效, 却并非尽善尽美.

First, it analysed the state of the sale network, including the features and development trends of division distribution, frequency distribution and evaluated the cost of present sales network according to the sales value in the ast few years.

首先结合企业近几年的实际销售数据，分析了销售网络的现状，包括市场需求的区域分布和频次分布特点和发展趋势，计算目前销售网络成本并把它作为模型参考值。

Studies on Improving the Cell Division Frequency of Potato Protoplasts

提高马铃薯原生质体细胞分裂频率的研究

Group orthogonal frequency and code division multiple access system

一种群正交频码分多址系统

Analysis and Performance of Multicarrier Frequency Diversity Spread Spectrum Code Division Multiple Access Communication System

多载波频率分集扩展频谱码分多址通信系统及性能分析

a data recombination method is used and an innovative frequency conversion algorithm is proposed for field division scan, and therefore field division display without brightness loss is realized.

采用数据重组方法对像素数据进行分场存储，创造性地采用了变频方法对存储数据进行分场扫描，从而实现了无亮度损失的分场显示。

33 ℃ high-temperature pretreatment can change the developmental direction and make it from gametal developmental path to sporophyte developmental path. Meanwhile it can make microspores keep higher vitality cell frequency and promote cell division and embryoid induction.

游离小孢子33℃高温预处理，可以改变小孢子发育方向，使其由配子体发育途径转向孢子体发育途径，并使小孢子维持较高的活细胞频率，促进细胞分裂和胚状体发生。