VoiFax is a program that manage voice/data/fax modem in the same manner of vgett...

摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用 OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受到的由于多 径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和 基本原理，然后在计算机上用M atlal〕对其性能进行了仿真，仿真中将OFDM与传统的单载波 调制方式―i1，交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较，最后分析了一者的仿真结果. -Abstract: Based on the communication technology train operation control system (CBTC) is a railway signal direction for the development of cross-frequency division multiplexing OFDM) is a wireless environment of high-speed transmission technology, its high-speed train control information transmission Bian be subject to the Due to the spread of multi-path fast fading caused by the impact of a strong resistance to diseases. This paper first introduces the OFDM technology development and the basic principles, and then on the computer〕 M atlal use its performance simulation will OFDM with the traditional single-carrier modulation-i1, cross-amplitude modulation (1frQAM) against multi-path interference of the 10 properties were compared with a final analysis of

MAX II CPLD具有灵活的可编程接口，合并了分立的FLASH存储器件，能快速和容易地配置FPGA，DSP，ASIC等。本中文手册将让用户对CPLD有一个宏观的认识。-MAX II CPLD with a flexible programmable interface, the merger of the separation of FLASH memory, can quickly and easily configure the FPGA, DSP, ASIC, etc.. Chinese manual will allow users to have a macro on the CPLD awareness.

三层结构及组件技术实现员工数据管理系统.pdf-three-tier structure and components technology employee data management system. Pdf

键盘ledlcd的3个驱动程序,以WORD的格式打开,有设计思想,步骤,框图,为你学习带来方便-3 of ledlcd keyboard driver WORD format to open, have design ideas, steps, block diagram, in order to bring convenience to learn from you

a platform to draw algorithms

一个UML的好资料，使用ROSE来学习一下UML，有实例的。-a UML good information, the use of ROSE to study the UML, the examples.

linux大全,几乎包含了所有的linux操作方法,个人读了感觉收益菲浅-Daquan, consists of almost all the Linux operating methods, read a feeling of personal income left undone

观察自然频率对振动模态的影响（固定阻尼系数），可对有强迫振动项 的情形进行观察，将阻尼系数和自然频率固定，选择一种 的形式，观察 对振动模态的影响。 2、对由方程刻画的单自由度阻尼系统做动画仿真，观察阻尼系数，固有频率以及强迫振动项 对弹簧振动的影响，并和振动曲线图进行对比，写出你的观察结论。 -1、To observe the natural frequency of the vibration mode of (fixed damping coefficient), may have forced vibration of items to observe the situation, the damping coefficient and natural frequency is fixed, choose a form of observation of the impact of vibration mode. 2, characterized by the equation of a single degree of freedom to do animated simulation of damping system to observe the damping coefficient, natural frequency and vibration forced vibration of the impact of spring items, and to compare and vibration curve, write your observations conclusions.

DS9200嵌入式开发平台的原理图，模块化的，大家可以参考-Embedded Development Platform DS9200 schematics, modular, everyone can refer to

Sigma-Delta ADC 设计问题集，阐述了工业adc的原理及设计注意事项-Sigma-Delta ADC design problem sets, expounded the principles of industrial adc and Design Considerations