chengxu

将lms算法进行了适当改进，改进算法与基本的lms算法使用matlab进行仿真比较，效果明显。(Lms algorithm will be appropriate improvements to improve the algorithm and the basic algorithm uses matlab simulation lms compared to an evident result.)

此程序适合对数字基带信号的仿真，并对两径信道传递函数曲线分析(This program suitable for digital base-band signal simulation, and the two-path channel transfer function curve analysis)

These files in Matlab implement a conventional DS -CDMA detector using QPSK modulation and matched filters in the receiver.(These files in Matlab implement a conventional DS-CDMA detector using QPSK modulation and matched filters in the receiver.)

it is a matlab code for non linear programming.it calls penalty method.

密勒码仿真,应用在通信原理课程实验中。其中包涵双相码编码过程。(Miller s code simulation, application in the communication principle course experiments.Includes two phase code encoding process.)

线性系统频域理论的实现 包括多项式，多项式矩阵，系统的矩阵分式描述，多项式矩阵描述，系统实现等。 其中多项式描述尚未完善。(frequency domain linear systems theory, including the realization of polynomials, polynomial matrix, the matrix fraction description, polynomial matrix description of system implementation. Description polynomial which is not yet perfect.)

最小二乘法实现m个方程的最高n次多项式的拟合。(least-squares procedure)

基于matlab的光学实验模拟，能很好体现matlab在这方面的优点(Optical-based experimental simulation matlab, matlab reflected well the advantages in this area)

利用Matlab软件编写的轨道不平顺数据分析程序能够对轨检车测得的不平顺数据进行处理,得到功率谱密度分布函数.轨道不平顺分析程序包括轨道不平顺数据预处理、轨道不平顺谱分布函数计算以及根据实测的车体振动加速度,对轨道不平顺与车体振动加速度进行相干分析、提出对行车运行有不利影响的不平顺波长范围等.研究结果表明:车辆的动力特性与轨道不平顺有密切关系.高低不平顺对车体垂向振动影响显著,轨向不平顺对车体水平振动影响显著,水平不平顺对列车垂向、横向振动均有显著影响.(Matlab software written track irregularity data analysis program able to track inspection car irregularity measured data are processed to obtain the power spectral density function. Track Irregularities track irregularity analysis procedures including data preprocessing, track irregularity spectrum distribution function calculations, and based on the measured vibration acceleration of the vehicle, with the body of track irregularity acceleration coherent analysis, have an adverse impact on traffic running irregularity wavelength range, etc. the results show that: the dynamic characteristics of the vehicle and the track irregularity closely related. rough along the vertical vibration of the vehicle significantly, rail irregularity vibration to levels significantly affect the body, the level of irregularity to train the vertical and horizontal vibration significantly affected.)

主要用matlab产生C/A码，并且捕获到信号，输出捕获结果和相位起始位置，而且可以实现对信号的跟踪，输出跟踪偏差和偏差震荡曲线，是一个很好很完整的GPS软件仿真的参考程序.(Mainly used matlab generated C/A code and capture the signal, and outputs the results of the capture phase starting position, but also can realize the tracking signal, output tracking error and error shock curve, is a very good simulation of the complete GPS software reference program.)