coding

使用matlab对心电信号进行处理，使用离散余弦变换(ECG signal using matlab processing, the use of discrete cosine transform)

说明：  本程序能够产生ami码，并且能够绘制其波形图和功率谱密度图(the procedure can have ami yards, and can draw its waveform and power spectral density map)

read mail from matlab

仿真未编码和进行（7,4）汉明码编码的QPSK调制通过AWGN信道后的误比特率(Simulation is not encoded by AWGN channel bit error rate and the (7,4) Hamming code coded QPSK modulation)

Displacement recovery for MLS method and compute stress from "An Introduction to Meshfree Methods and Their Programming [G.R. Liu, Y.T. Gu] " the orginal code is in fortran but this code is in matlab

Fundamentals_of_Database_Systems,_6th_Edition 电子版及课后习题答案(Fundamentals_of_Database_Systems,_6th_Edition PDF & solutions)

画圆，，复杂背景下，圆心的中心定位，使用的是霍夫变换(Circle, complex background, the center of the circle' s center position, using a Hough transform)

This program apply downsampling on a speech file.

说明：  RRT 的思想是快速扩张一群像树一样的路径以探索（填充）空间的大部分区域，伺机找到可行的路径。(The idea of RRT is to rapidly expand a group of tree-like paths to explore (fill) most areas of space, waiting for the opportunity to find feasible paths.)

关于离散一维信号小波分解，不需要解压密码(On the one-dimensional discrete wavelet decomposition, do not need to extract the password)