Interpolation-in-Digital-Modems

多线程串口编程，程序是使用arm加华为的GPRS模块进行测试 方便大家修改(Multithread serial programming, program is to use the arm GPRS module testing Huawei to facilitate change)

人工神经网络的工具想函数一览表，可以查询很方便的(artificial neural network tool to the list of functions that can be very convenient inquiry)

USB通信编程，获取USB设备信息，如果编译不通过，你需要下载NTDDK中的hidsdi.h 和 hid.lib文件等。(USB communication programming，get the USB devices informateion ,if there have link errors,you have to download the header files hidsdi. H, the library file hid. Lib,etc in the NTDDK.)

vectors 16 向量重新影射 一次引导，2次引导

实现雷达信号处理仿真，LFMMTIMTD(radar signal processing,including MTI,MTD,LFM signal)

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.)

说明：  6. 在三条径的瑞利信道中，对于OFDM： (1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真。画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已同步，请设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已同步，请设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(6. In the three-path Rayleigh channel, for OFDM: (1) please design a specific navigation-assisted channel estimation method and use Simulink for simulation.The relation curves of bit signal-noise ratio and channel estimation mean square error and the relation curves of bit signal-noise ratio and bit error rate are drawn. (2) if the frequency has been synchronized, please design a specific method of time synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit-snr and acquisition probability. (3) if time has been synchronized, please design a specific method of frequency synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit signal-to-noise ratio and frequency synchronization error.)

说明：  分数阶傅里叶法对LFM信号进行检测和参数估计的参考文献，可以参考原理。(The reference of fractional Fourier method for LFM signal detection and parameter estimation can refer to the principle.)

数字调制-OFDM-QPSK-峰均比-资料,很好很详细，学习ofdm很好的资料(Digital Modulation-OFDM-QPSK-PAR- information, very very detailed, very good information to learn ofdm)

这个是DFT-S OFDM的接收端平均信噪比PDF和CCDF仿真图(This is the DFT-S OFDM receiving end of the average SNR simulation diagram PDF and CCDF)