Rapport

用matlab实现smith圆图的基本思路和指导。(Using matlab circle diagram smith realize the basic ideas and guidance.)

通过这种方法，可以实现matlab对于ansys的调用。 附件中为matlab程序和ansys命令流。( In this way, you can call the matlab for ansys. Annex matlab program and ansys command stream.)

说明：  BP神经网络异或问题 使用说明：打开文件夹中的BP.m文件，在matlab中运行此m文件，即可在command window中得出结果。压缩包内附说明文件 (XOR problem of the BP neural network for use: Open the folder in BP.m file, run this m file in matlab to the outcome of the command window. Compression package containing the documentation)

系统辨识程序，改进最小二乘法其中包括--两步法(System identification procedures, including improving the least squares method- two-step)

PSK调制的源代码，可以在一个通信系统中或者需要使用调制的时候使用(PSK modulation source code, can be a communication system or need to be used when using modulation)

信源为数字信号信道信噪比为10dB的直扩通信系统仿真实验-LDPC译码仿真源代码(Source to a digital signal channel 10dB SNR DSSS communication system simulation simulation-LDPC code decoding)

准正交空时分组码仿真程序，是在matlab上运行的(Quasi-orthogonal space time block code simulation program)

利用DCT变换对灰度图像进行压缩，求出压缩比；对比不同压缩比的图像。(DCT transform using grayscale image compression, the compression ratio obtained compare different compression ratio of the image.)

导入振动信号（2信道）分析时域、频域波形的MATLAB-GUI界面(Import vibration signals (2-channel) analysis in time domain and frequency domain by MATLAB-GUI interface)

灰色预测方法的特点表现在：首先是它把离散数据视为连续变量在其变化过程中所取的离散值，从而可利用微分方程式处理数据；而不直接使用原始数据而是由它产生累加生成数，对生成数列使用微分方程模型。这样，可以抵消大部分随机误差，显示出规律性。(The characteristics of the grey prediction method are as follows: First, it regards the discrete data as the discrete value of the continuous variable in its change process, so that the differential equation can be used to process the data; instead of using the original data directly, it generates the cumulative generation. Number, using a differential equation model for generating a series. In this way, most of the random errors can be offset, showing regularity.)