time_domain_chirp_DFBLaser

数字通信中的16QAM映射，采用格雷码编码，包括星座图的显示，简单明了清晰，由此可以退出64,128QAM的matlab编码(Digital communication 16QAM mapping, the use of Gray coding, including the constellation display, simple clear, it can be out of the 64,128 QAM matlab code)

说明：  毫米波以及MIMO系统仿真，附带matlab程序和论文！(Angle-based codebook for low-resolution hybrid precoding in millimeter-wave massive MIMO systems)

集中质量串联模型，在El-centro地震波作用下的时程分析，并分析了隔震与非隔震支座下的顶层位移、速度、加速度的对比情况(The time series analysis of the concentrated mass series model under the action of El-centro seismic wave is carried out, and the comparison of the top displacement, velocity and acceleration under the condition of isolation and non isolation is analyzed.)

这是一个DSP28335的FFT程序，用C语言写的，当然也可以移植到其他芯片中(This is a DSP28335 FFT program written in C language, of course, can also be ported to other chip)

开关磁阻电机，双闭环，无转矩分配函数，关断角可调，TMS320F28X，实测可用(Switched reluctance motor, dual-loop, no torque distribution function, turn-off angle is adjustable, TMS320F28X, measured available)

傅里叶轮廓变换术，通过单幅条纹图像提取相位，最后根据上述信息，模拟曲面轮廓(Contour Fourier transform technique, through single stripe image extraction phase, the last light of the above information, an analog surface profile)

利用 RSSI值对几何估算区域进行划分，运用改进公式计算出新的未知节点位置。(The geometric estimation area is divided by RSSI value, and the new unknown node position is calculated by the improved formula)

可以求出B样条曲线的导数及切线，有一定的参考价值。(It can work out the derivative and the tangentof B spline curve , have certain reference value.)

人脸识别中TensorPCA算法的matlab程序，使用最近邻分类器进行识别。(Face Recognition TensorPCA algorithm matlab procedures, the use of nearest neighbor classifier to identify.)

说明：  一种基于多用户子载波分配的算法希望对大家有用。(Based on Multi-user subcarrier allocation algorithm for all of us hope that useful)