qpsk基带gardner位同步

北斗卫星导航系统空间信号接口控制文件，这是正式版(BeiDou Navigation Satellite System Interface Control Document)

说明：  雷达信号分选的经典matlab代码。包含PRI变换、CDIF、SDIF三种方式(radar signal sort include PRI CDIF SDIF)

设计了差分编码移相键控(2DPSK)调制解调系统的工作流程图,并利用 Matlab 软件对该系统的动态进行了模拟仿真。利用仿真的结果,从基带信号的波形图可以衡量数字信号的传输质量 由系统的输入和输出波形图可以看出,仿真实验良好 。(Design of a differential phase shift keying encoding (2DPSK) modulation and demodulation system working flow chart of the system using Matlab software to simulate the dynamics simulation. Using simulation results, from the baseband signal waveform can be measured digital signal transmission quality by the system' s input and output waveforms can be seen that simulation is good.)

MFC编程 实现数据绘制成曲线。经兄弟推荐最终决定用两个控件MCSCOMM与TeeChart来完成此任务。MCSCOMM控件时vc自带的串口控件，TeeChart Pro是一个强大的VCL图表组件，支持上百种2D和3D图表风格，并提供40多个数学和统计函数、无限制的轴和22个调色板(MFC programming realizes data plotting into curves. After recommendation by brothers, we finally decided to use two controls, MCSCOMM and TeeChart, to accomplish this task. TeeChart Pro is a powerful VCL graphics component that supports hundreds of 2D and 3D graphics styles and provides more than 40 mathematical and statistical functions, unlimited axes and 22 palettes.)

说明：  适用于VS2010以后的版本对串口进行读取数据和写入数据到串口。(Applicable to VS2010 and later versions to read data and write data to the serial port.)

完整的带有多种参数的宽带雷达信号仿真和波形分析，给出了工作频率，调频带宽，脉冲重复周期、扫频时宽等参数，结果绘图显示，程序有中文注释，方便好用(Complete wideband radar signal simulation and waveform analysis with a variety of parameters, given the operating frequency of the FM bandwidth, pulse repetition period, when the sweep width and other parameters, the results of the graphics, the program has Chinese comment, convenient and easy to use)

c语言实现的lwm2m协议，程序是可以直接编译通过的，主程序在src的lwm2mclient.c中(The lwm2m protocol implemented by C language can be compiled and passed directly. The main program is in lwm2mclient.c of src.)

不同模态OAM的相位图，电场场强图，及用箭头表示相位变化(Phase diagrams, electric field intensity maps of different modes of OAM, and phase changes with arrows.)

LDPC信道编码理论详细分析及matlab算法实现()

working of the fifth generation intelligent radio that is Cognitive Radio (CR) system which works on predictive data rate and propose ANFIS based learning scheme to introduce intelligence in it. The testing data set is taken from training set. Validation data set is unseen data. RMSE and prediction accuracy are used as performance index. Two gaussian membership functions are taken for each input. Error goal was set for .001.Training was for 300 epochs. It is seen prediction accuracy was 91 percentages in testing case and 89 in validation. RMSE difference between validation and testing case very small.