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实现绘制信号的功率谱，两重自相关，滤波后时域，滤波器，频谱图，信号时域图以及自相关函数图等功能(The functions of drawing signal power spectrum, double correlation, filtering time domain, filter, spectrum, signal time domain and autocorrelation function diagram are realized.)

说明：  基于接收信号强度的KNN室内定位算法，还有测试数据。适合初学者参考(KNN indoor positioning algorithm based on the received signal strength, as well as test data. For beginners)

说明：  在瑞利信道中，对于OFDM信号设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线(In Rayleigh channel, a specific guidance aided channel estimation method is designed for OFDM signal, and the simulation is carried out with Simulink to measure the BER performance of BPSK modulation. The relation curve between bit SNR and channel estimation mean square error is drawn, and the relation curve between bit SNR and bit error rate is drawn)

说明：  SOCKET调试工具与压力测试小工具源代码 VS2008下测试通过，非常好用！(SOCKET debugging tools and stress testing tool for source code for VS2008 under a small test, very easy to use!)

principle_of_communication……matlab(principle_of_communication.matla)

说明：  STC单片机多机连级串口程序可实现.416路控制. 串口和485都可以使用、 一个程序可以用在26块控制板上，通过拔码开关给板子编号，每块板可以过滤分析所接收到不同的代码。进行继电器的动作，能返回数据，因使用定时器发送返回，不会阻塞或者代码错乱、可以 用在中控，物联网，等各种控制场合。修改代码后，能达到上千路的控制。(STC single-chip microcomputer multi-level serial port program can realize 416 channel control. Serial port and 485 can be used. One program can be used on 26 control boards. Each board can filter and analyze different codes received by numbering the boards with the pull-out switch. Relay operation can return data, because the timer is used to send the return, it will not block or code confusion, and can be used in central control, Internet of things, and other control occasions. After modifying the code, it can achieve thousands of control.)

一个用于高阶调制单载波系统的低复杂度均衡算法，非常有用(a low-complexity equilization algorithm which can be applied in single-carrier systems wiht high order modulation)

蓝牙模块 VisualStudio2008 蓝牙通讯(bluetooth VisualStudio2008 bluetooth)

RTCM协议说明文档，介绍RTCM协议详细内容，帧结构。(rtcm frame )

说明：  通过MATLAB做一个用户登录的GUI页面，实现登录、注册等功能(Make a user login GUI page through MATLAB to realize login, registration and other functions.)