This dissertation analyses the system of the ideal software radio and the processing ability of digital signal processors , provides the realization of software radio system in recent years , that is , based on the commonly used hardware platform , software programmable and configurable , if digital system , and declares the popular digital technologies in software radio which can be used in this if digital system 本文在分析了理想软件无线电系统和当前数字信号处理器的运算能力后，提出了现阶段可实现的软件无线电系统，即建立在标准化模块化的通用硬件平台上的软件可编程可再配置软件无线电中频数字化系统，并对这个系统上可实现的软件无线电通用数字技术作了介绍。
This paper discusses the development , research and application of the virtual electronic experiment on net from four aspects , including the pcb of the hardware , the develop of the applied condition of the virtual electronic experiment , the realization of the virtual electronic experiment and the guidance of each experiment of this experiment system 本文主要从四个方面详细论述了网络化虚拟电子实验的开发、研究和应用：硬件电路板的制作、整个通用硬件平台的介绍、虚拟电子实验应用环境的开发、网络化虚拟电子实验的实现。
Special function will be implemented by downloading special software into the hardware platform , and the system can be constantly upgraded by continually upgrading the software . the author programs all the software which defines all the functions of if digital receiver taking fm receiving as example , which makes it the if digital unit of ultrashort fm transceiver 通过向这个通用硬件平台上加载相应的软件完成特定的通信功能，通过对软件的升级可以对这个系统不断升级，作者设计了使这个硬件平台完成调频信号数字接收机功能的全部软件，使这个硬件平台可以作为软件无线电超短波调频电台的中频数字化模块，承担调频信号的数字解调。
Under the same restriction of a universal sdr hardware platform , the demodulation of linear modulated waveform , continuous phase ( no - linear ) modulated waveform , and multi - carrier modulated waveform , are investigated . corresponding to those three modulation schemes , bust mode mpsk , omsk , and ofdm signals are taken as the examples to implement a multi - mode sdr receiver , and results are presented 本文在软件无线电通用硬件平台结构下，分析了线性调制方式、非线性连续相位调制方式和多载波调制的软件接收机实现问题，分别以突发模式mpsk调制、 gmsk调制、 ofdm调制模式为对象，给出了具体的多模式接收实现方法和仿真结果。
The result of testing indicated that the trend of system ' s dynamic characteristic is accord with the result of theoretic analyse ， and the result is reasonable ， the results of system can correctly reflect the dynamic characteristic of the fact system when system fall under disturb , models or system can run in environment of all - purpose hardware and software 测试结果表明：模块库中各模块的动态规律正确；稳态值与设计值相比，主要参数的误差较小，动态特性的趋势与理论分析结果吻合较好；试验的输出结果正确的反映了系统中各个设备的动态特性；该系统能在通用硬件和软件环境下运行。
The distributed parallel multi - port router system developed by 8010 research - room has the characteristics of high performance , high reliability , high scalability and low price , which is based on linux operation system software platform and x86 general - using hardware platform . to improve the quality of service and the reliability of the system , the load balance of its multiple ports should be concerned carefully 本教研室开发的基于linux软件平台和x86体系通用硬件平台的分布式并行多出口路由器系统,它定位于网络接入路由器,具有高性能、高可靠性、低成本和可扩展性好的特点。
In the action of the application environment of the virtual electronic experiment , discusses mainly how to use the labwindows / cvi software and discusses the characteristic of the developing environment , the result of the experiment , the programming way and the following chart of system . in the section of the realization of the virtual electronic experiment on net , it discusses mainly the structure and the characteristic of the experiment on net based on the developing plat of lab windows / cvi . meanwhile introduce the key program and the skill at length , and had given the relative the following chart 在硬件电路板的制作中，主要论述了电路板的创意及特色、抗干扰设计；整个通用硬件平台的介绍主要阐述了信号源( dds ) 、数据采集电路的实现和功能；在虚拟电子实验应用环境的开发中着重论述了如何使用labwindows cvi 、开发的实验环境的特点、和实验结果以及系统编程方法、流程图等；在网络化虚拟电子实验的实现中重点阐述了基于labwindows cvi开发平台的此网络化实验的结构和特点；同时详细讲述了关键的编程细节以及技巧等，并配有相关的程序流程图加以详细说明。
The software radio is one of the new communication systems which were presented in recent years . the fundamental idea of software radio is to establish an open , standard and modular universal hardware platform where the a / d and d / a converter is moved as close as possible to antenna and all of the communication function is realized by software . the aim is to research and develop a high flexible and adaptable communication system 软件无线电是在无线电通信领域提出的一种新的通信系统体系结构,它的基本思想是构造一个具有开放性、标准化和模块化的通用硬件平台,将宽带a / d和d / a转换器尽可能靠近天线,通过软件编程来实现各种功能,以研制出具有高度灵活性和适应性的无线通信系统。
