RoyV08

Fingerprint Recognize System

温度变化对光纤光栅布拉格波长的影响，通过二维图像表示出。(The impact of temperature change on the optical fiber grating Bragg wavelength is shown through the two-dimensional image.)

滤波反投影的CT图像重建算法、人脸识别中核心算法(Filtered back-projection of the CT image reconstruction algorithm, the core algorithm for face recognition)

卡尔曼滤波算法和扩展卡尔曼滤波算法在目标跟踪到的应用(Kalman filter and extended Kalman filter algorithm to the application in target tracking)

通过MATLAB的SIMULINK模型设计，实现伪随机数的序列发生器，并通过DSP BUILDER中的SIGNAL COMPILER转换成QuartusII工程，并实现硬件的下载。(Through the MATLAB SIMULINK model design, realization of pseudo random sequence generator, and through the DSP BUILDER of SIGNAL COMPILER converted into QuartusII engineering, and realize the hardware of the download. )

modulation coding for communication channel

张贤达的经典书籍非平稳信号分析与处理，完全版本(Xian-up of the classic books of non-stationary signal analysis and processing, full version)

非线性扩展卡尔曼滤波算法的matlab程序(Description:This is a tutorial on nonlinear extended Kalman filter (EKF). It uses the standard EKF fomulation to achieve nonlinear state estimation. Inside, it uses the complex step Jacobian to linearize the nonlinear dynamic system. The linearized matrices are then used in the Kalman filter calculation. The complex step differentiation seems improving the EKF performance particularly in accuracy such that the optimization and NN training through the EKF are better than through the UKF )

this file is implementing CLOCK recovery using DD method in matlab. This is a mfile. The signal shape is 4PAM

reduction to papr in ofdm with Peak Windowing: The basic idea of peak windowing is to multiply the envelope of OFDM signal with a weighting function . Therefore, ~xE (t)= xE (t) f (t) where XE(t) =[x(t)] The weighting function given by: f (t)= 1-Σ α .w(t- t ) t-t w(t) : is the window function. t : denotes the position of a local maximum of the envelop xE(t) . α : attenuation constant . When the amplitude of envelop amplitude of the OFDM signal exceeds a threshold, a window function is applied to the envelop of the OFDM signal to eliminate the peak amplitude. windowing results in a smooth signal. Hanning window function will be used for w(t) As a matter of fact , other windows such as cosine, hamming and Kaiser may be employed.