U_pcm_xue

对一个LSI系统进行辨识,比较最后辨识出的系统与原系统的差别，并分别显示出来。(An LSI system Identification system with the original system, compare the last identified differences, and are displayed.)

an investigation on use of chaotic sequence in DS-CDMA. The DS-CDMA systems offer physical layer security without the need for a significant increase in computation or power requirements. Nowadays, DSCDMA has been used widely. These systems suffers from multiple access interference because of other users transmitting in the cell, channel inter symbol interference and additive white Gaussian noise. Codes have an effective role in DSCDMA system, so M-sequences; gold sequences have been used as spreading codes in DS-CDMA. These sequences by shift registers and periodic in nature are developed. However, these sequences are not enough and also limit the security. This paper presents an investigation on use of new type of sequences called chaotic sequences for DS-CDMA system. These sequences by chaotic maps are generated.

内含Newtonback.m，Newtonforward.m文件，牛顿插值法，向前向后插值。(Intron Newtonback.m, Newtonforward.m documents, Newton)

在matlab环境下实现语音信号的预处理，包括分帧，加窗，滤波，并进行端点检测，绘图。(Voice signal preprocessing in the Matlab environment, including the frame, windowing, filtering, and endpoint detection, drawing.)

方崇智版《过程辨识》课后习题及大作业，有详细的程序及文档说明(Fang Chongzhi version of " identification process" after-school exercise and large operations, there are detailed procedures and documentation)

MATLAB下的语音识别程序，已经做成了gui界面(MATLAB under the speech recognition program, has made a gui interface)

DEA的CCR模型程序及其对偶模型（包括松弛变量）的程序计算(CCR model program and its dual DEA model (including relaxation variables) program calculation)

Electromagnetic AC MOTOR actuator simulation

matlab program for comm.

RANDOM NUMBER GENERATION AND TEST FOR RANDOM NUMBER