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介绍了数字通信中的QPSK调制解调的原理，通过用Matlab编写脚本程序对QPSK通信系统的发射和接收过程的具体实现进行模拟仿真，绘出信号在理想信道和加噪信道中模拟传输时的时域图，并对各模块进行了频谱分析，所得到的结果与理论基本相符，对于理解QPSK系统的性能并在系统的实际应用上作进一步的设计，提供了有效的参考依据(The introduction was done with the principle of the QPSK modulation and demodulation in digital communications, a script was written by using Matlab program to carry out a simulation of the QPSK communication system ,which contains the concrete realization of transmit and receive process. The time-domain diagram is drew separately when the signal transmits in the ideal channel and in the channel with noise, spectral analysis of each module is also done, the results obtained with theoretical results in the main, which provides an effective frame of reference for understanding the performance of QPSK systems, and the practical application in the system to make further designed.)

改程序在噪声幅度与信号幅度相当的情况下，运用MSL算法能够实现原信号的优良输出。(Magnitude of change procedures and the amplitude of the signal in the noise equivalent circumstances, the use of the original signal MSL algorithm can achieve good output.)

五组在matlab中应用的小程序：（1）carspls and carsplslda，竞争性自适应重加权算法（cars）筛选特征变量，并建立PLS定量或定性模型（2）mcuvepls 蒙特卡罗抽样无关信息消除后，建立PLS定量和定性模型（3）osc，正交信号校正的多变量数据处理方法（4）plot cars-lda-mcs,表征cars-lda-mcs的结果（5）demo 对以上carspls and carsplslda，mcuvepls 方法在matlab中实现举例演示(Five groups codes in matlabapplication: (1) carspls and carsplslda, competitive adaptive re-weighted algorithm (cars) for characteristic variables selection, and the establishment of PLS ​ ​ quantitative or qualitative model (2) mcuvepls， Monte Carlo sampling and the uninformative variables elimination （UVE）， and the establishment of quantitative and qualitative PLS model (3) Orthagnal signal correction（osc）, multivariate data processing method (4) plot cars-lda-mcs, characterization results of cars-lda-mcs (5) the demo about carspls and carsplslda, mcuvepls method implementation in matlab)

利用simulink 仿真分析变压器谐波(Using simulink Simulation to Analyze Transformer Harmonic)

4发射天线1接收天线BPSK调制下的正交空时编码，采用MATLAB语言(4 receiving antennas transmitting antennas 1 under BPSK modulation orthogonal space-time coding using MATLAB language)

MIMO系统的各种空时分组码仿真包括22alamouti编码，12速率的空时分组码(MIMOMulti-input multi-output (MIMO) system of space-time block codes 22alamouti coding, 12 simulation including rate of space-time block codes)

MATLAB仿真程序，基于直流输电系统（HVDC）的MMC（modular multilevel converter）结构变流系统。程序主要包括主变流部分及其控制部分，MMC为7电平结构。程序测试OK。(a power convertion system realized in MATLAB SIMULINK. the system is carried out with a kind of newly investigated converter named Modular Multilevel Converter of seven levels.)

人脸识别技术利用集成学习，adaboost算法学习代码(Face recognition, integrated learning, adaboost algorithm code)

matlab曲线拟合工具箱，包含进行曲线拟合的所有内容，非常方便使用。(matlab curve fitting toolbox contains curve fitting, and is very convenient to use.)

说明：  混沌序列的相空间重构的MATLABT程序,相信一定能给您带来惊喜.(chaotic sequence of phase space remodeling MATLABT procedures, I believe that you can bring surprises.)