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A paper that I presented on Supervisory Control and Data Acquisition (SCADA) won the second prize at the symposium conducted by the Electrical and Electronics Engineering department of the SRM University. Other topics on which I presented papers were Performance enhancement of wireless sensor networks using directional antennas, Smart card application and wireless communication. Also my research idea titled “Wavelet Based Image Compression Using SPIHT Algorithm “secured third prize in a technical festival.

说明：  基于小波包的带通滤波器设计程序。给出了小波变换的快速算法和重构算法，讨论了应用小波变换进行信号带通滤波的方法，并通过正交小波包对信号的分解，把频率成分复杂的信号分解到各个频带上，根据需要提取指定频率的信号，然后用小波包重构算法对信号进行重构，实现对信号的提取。(Based on wavelet packet band-pass filter design program. Given the fast algorithm of wavelet transform and reconstruction algorithms are discussed using wavelet transform signal band-pass filtering method, and through the wavelet packet to signals can be decomposed, 把 frequency components of complex signal is decomposed into various frequency bands 上, according to need to extract the specified frequency signal, and then reconstructs the signal reconstruction algorithm to achieve the extraction of the signal.)

说明：  该程序为文本文档，可在matlab 中运行(the procedures for text documents can be run in Matlab)

LTE链路和系统仿真 LTE链路和系统仿真 LTE链路和系统仿真(Link and system simulation LTE LTE LTE link link and system simulation and system simulation)

层次分析法用于综合评价分析，一种数学建模的实用方法，对你的比赛，和应用很有帮助(Analytic hierarchy process (ahp) is used in comprehensive evaluation analysis。A good mathematical modeling tool, It is very helpful to your study MATLAB)

本代码应用FDTD 方法模拟微带带阻滤波器，并得到S11，S12 曲线以及显示电磁波在空间的传播。频率范围为0-20GHz。微带基片的相对介电常数为6.15，厚度是1.27mm。(Application of FDTD method to simulate the code microstrip band-stop filter, and get S11, S12, and the curve shows the spread of electromagnetic waves in space. Frequency range of 0-20GHz. Microstrip substrate relative dielectric constant of 6.15, the thickness is 1.27mm. )

This paper presents a novel algorithm of hiding secret messages by applying mathematical lemmas and information theory. The proposed algorithm can hide more information with acceptable embedded rate and achieves requirements of information hiding algorithm and simply information extracting. The main idea is applying modern algebra to solve the information hiding problem in multimedia. In order to prevent some attacks on stganography, hidden initial bits of image data pixels are chosen randomly. The extracted information are achieved without the reference of the original image and extracted keys. The experiment results show that our approach is effective and reliable.

this source code is eacpower matlab

说明：  清华大学信号处理原理课程实验，内容是各种卷积计算方法性能的比较(Tsinghua signal processing theory course experiment, the content is the convolution calculation methods compare the performance of)

matlab的部分编程实例，可以为大学相应课程提供参考。(matlab part of the programming examples, can provide a reference for university courses accordingly.)