programisolationstructure

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.

NAVIER_SOLUTION.m for rectangular plate

idm code used for multiple access

最大功率跟踪爬山法的控制模型，可成功跟踪，带滤波(MPPT control model climbing method can successfully track with filter)

说明：  V带传动多目标优化设计 轴系设计计算 轴系设计计算-2(V belt drive shaft multi-objective optimization design calculations-2 shaft design calculation)

Reflection Coefficients for an Air-to-Glass Interface

power_triphaseline.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_triphaseline.rar, Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

multisurface_plasticity

matlab实用程序百例,解决各种初学者会遇见的问题(Matlab examples,Solve problems for beginners )

一个matlab写的双线性内插的程序，欢迎下载。(Matlab write bilinear interpolation procedures, welcome to download.)