chepai

M-file for simulating a QPSK transmitter by modulating with a pseudo random bit stream. A serial to parallel conversion of the pseudo random bit stream is performed with mapping of two bits per symbol. A cosine and sine carrier is configured and the I and Q symbols modulate these carriers. The I and Q carriers are combined and time and frequency domain plots are provided showing key waveforms at various positions in the QPSK transmitter. (M-file for simulating a QPSK transmitter b y modulating with a pseudo random bit stream. A s erial to parallel conversion of the pseudo rand om bit stream is performed with mapping of two bi ts per symbol. A cosine and sine carrier is CBMs gured and the I and Q symbols Modulate these CARR IERS. The I and Q carriers are combined and a time nd frequency domain plots are provided showing key waveforms at various positions in the QPSK t ransmitter.)

该代码为基于PID神经网络的系统控制算法(The code is a system control algorithm based on PID neural network)

《精通MATLAB—综合辅导与指南》，word格式的，可读性很强，适合初级学习人员使用。("proficient MATLAB-comprehensive counseling and guidance", word format, readability strong, suitable for junior staff learn to use.)

该程序是专门对于电力电子晶闸管的过零触发设计。(this project is for Zero Trigger in the electrical.)

求逐月异常序列x(n,12)和y(n,12)(n是年)的相关系数r(24)，其中j=1～12是1～12个月的情形，13～22是冬、春、夏、秋、冬季逐月、春季逐月、夏季逐月、秋季逐月、逐月、年、冬半年逐月（NDJFMA）、夏半年逐月（MJJASO）的序列的情形 (Abnormalities associated)

说明：  通过gamultiobj函数，实现基于nsga2的改进优化算法(An improved optimization algorithm based on NSGA2 is implemented by gamultiobj function)

三相异步电动机直接转矩控制仿真程序，经调试通过，与大家共分享(DTC Control)

说明：  用Matlab产生随机拓扑图，优化并显示结果。(Matlab random topology map, optimization and display results.)

说明：  杂波模型，可用于雷达信号处理中，其中模型为瑞利分布(Clutter model can be used for radar signal processing, which for the Rayleigh distribution model)

example for matlab code