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bpsk qpsk 16qam 64qam频带上的调制解调信号包括误码率曲线，眼图和星座图(bpsk qpsk 16qam 64qam modulation and demodulation)

running erd commander form usb stick

未来光通信互连技术书籍，国外大牛写的一本关于光通信的书，对于光通信互连研究很有帮助。(The future of optical communication interconnect technology books。)

UWB室内定位相关资料，内部包含研创物联精准室内定位代码(UWB Indoor Positioning Information, which contains the Accurate Indoor Positioning Code of Inventory Federation)

用DFT对连续时间信号进行谱分析，用DFT定义进行计算，不同抽样频率不同抽样点下的谱分析Matlab实例。(The continuous time signals are analyzed by DFT, and calculated by DFT definition. The Matlab examples are analyzed under different sampling frequencies and sampling points.)

说明：  A Study of the Ultra-Wideband Wireless Propagation Channel and Optimum UWB Receiver Design

PuTTY是一个Telnet、SSH、rlogin、纯TCP以及串行接口连接软件。较早的版本仅支持Windows平台，在最近的版本中开始支持各类Unix平台，并打算移植至Mac OS X上。除了官方版本外，有许多第三方的团体或个人将PuTTY移植到其他平台上，像是以Symbian为基础的移动电话。PuTTY为一开放源代码软件，主要由Simon Tatham维护，使用MIT licence授权。随着Linux在服务器端应用的普及，Linux系统管理越来越依赖于远程。在各种远程登录工具中，Putty是出色的工具之一。Putty是一个免费的、Windows x86平台下的Telnet、SSH和rlogin客户端，但是功能丝毫不逊色于商业的Telnet类工具。目前最新的版本为 0.68 latest release(PuTTY is a Telnet, SSH, rlogin, pure TCP, and serial interface connection software. The earlier version supported only the Windows platform, and in recent versions began to support various Unix platforms and was intended to be ported to Mac OS X. In addition to the official version, there are many third party groups or individuals that migrate PuTTY to other platforms, such as Symbian based mobile phones. PuTTY is an open source software that is maintained primarily by Simon Tatham and licensed using the MIT licence. With the popularity of Linux applications on the server side, Linux system management is becoming more and more dependent on remote. Putty is an excellent tool for various remote login tools. Putty is a free, Telnet, SSH, Telnet, and rlogin client on the Windows X86 platform, but it is no less functional than the business class tools. The latest version is 0.68 latest release)

可实现，线性调频信号的产生，波形显示，波形解调和码字解调功能(Realizable, chirp signal generation, waveform display, waveform demodulation and codeword demodulation)

说明：  HC6800EM3 v20原理图（电路图）(HC6800EM3 V20 schematic diagram (circuit diagram))

说明：  可以根据用户需要设计任意的模拟滤波器。只需填入截止频率、通频带等参数，该软件就可自动生成滤波器的电路图，以及各个元件的参数。(this software is very useful for designing filter ,you need only input the data ,then it can generate the circuit.)