Dxiangguixian

计算自由空间中，loop天线的辐射方法。(for a circular loop (with constant current). The loop is radiating into free space. The directivity and radiation resistance are calculated using the trailing edge method in increments of 1 degree in theta. )

说明：  matlab file to calculate trajectory

第四版prokias数字通信配套代码之第七章(source code(matlab )for prokias Digital Communication (4th edition))

maple起步教程，适合初学maple的人使用，可供相关人员参考。(maple started tutorial for beginners maple people use, for future study.)

普通PID控制及其扩展算法控制的MATALB仿真程序，内容包含面广．(ordinary PID control algorithm and its expansion of enriching control simulation program, which includes many sectors.)

用MATLAB编写与仿真了MSK信号，其中结合了自己写的快速傅立叶变换实现了MSK信号的调制还有解调，而且作为拓展，还加入噪声、通过带通滤波器、低通滤波器、载波信号等等。调制解调都很有用，画出的图也很漂亮规范。(Using MATLAB and the simulation of the MSK signal, which combines the fast Fourier transform to write their own modulation there demodulation of MSK signals, but also as a development, but also by adding noise, band-pass filter, low pass filter, the carrier signaland so on. The modem is very useful to draw the plan is also very beautiful and specification.)

MATLAB的ezw算法，有详细的介绍，可实现程序的编译功能(MATLAB' s ezw algorithm, a detailed description of the program compiled functions can be realized)

It is used for understanding the phenomenon of pendulum and chaos. It s good for beginners.

这些压缩文件里面包含了QPSK信号在瑞利信道和加性白高斯噪声信道中的仿真等(These compressed file containing the QPSK signal in the Rayleigh channel additive white Gaussian noise channel simulation, etc.)

现在谱分析的发展，详细介绍了谱分析的发展情况，建议学习谱分析的相关人士阅读(Now the development of spectral analysis, spectral analysis described in detail the development of the proposed study and spectral analysis of the relevant people to read)