duoqiuti-pingmianyichang-jisuan

说明：  matpower 学习手册-----------(matpower manual-----------)

这是一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT，上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模块，并统括系统性能的仿真验证了系统设计的可靠性。 (This is a relatively complete simulation of OFDM communication system design, including coding, modulation, IFFT, the upper and lower frequency, Gaussian channel model, FFT, PAPR suppression, a variety of synchronization, demodulation and decoding module, and system performance omnibus simulation of the system reliability.)

it is an .rar file. it contains some source code of matlab

灰度变换法实现彩色处理，《计算机图像处理与识别技术》源地面 (color transform)

潮流计算程序用matlab进行开发，支持多节点的潮流计算，并可设置迭代次数与精度(Flow calculation)

MATLAB 实例有100多个，是很好的学习资料，功能很多，全部都是源代码。(MATLAB examples are more than 100, is a very good learning materials, a lot of functions, all the source code.)

Source code for Adaptive IIR_FIR_Weiner Filter

考虑L的三个不同值：L＝256（3个数据段），L＝128(7个数据段)和L=64（15个数据段）。各自的谱估计图如上图所示。可以明显的看到，加窗明显的减小了频谱上的假谱峰，但也更加进一步平滑了谱峰。所以，对于L＝64的情况，在ω＝0.8π的谱线可以很确定的辨认，但是那两个靠近的谱峰不容易区分。对于L＝128的情况，这种情况提供了在分离和检测间最好的均衡。当然，对于在L＝256时的情况，效果是更好的，能够从谱估计图上明显的分辨出三条谱线的存在以及它们幅度关系的强弱。 除了Welch法外，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。(consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power)

两靖rayleigh衰落信道仿真。This m-file uses successive iterations of data to create an animated = effect ％showing the results of passing an unmodulated carrier through a simple = two ％path Rayleigh fading channel. The following formula and diagram ％illustrates the m-file operation. The animation shows, input(blue) ％and the output(red), the the phase shifts, gains, and attenuations ％of the output sine wave or carrier.(Two Jing Rayleigh fading channel simulation. This m-file uses successive iterations of data to create an animated = effect showing the results of passing an unmodulated carrier through a simple = two path Rayleigh fading channel. The following formula and diagram illustrates the m-file operation. The animation shows, input (blue) and the output (red), the the phase shifts, gains, and attenuations of the output sine wave or carrier.)

using Simulink complete vfd of induction motor design