OFDM

改善数字图像质量的滤波方法研究,内有中值滤波等多种去噪方法(To improve the quality of digital image filtering method, with a median filter denoising method, etc.)

扩频通信，从电磁波利用来看，与一般现有的常规通信方式完全不同。扩频通信利用伪随机编码把信息数据（窄带信号）的频谱进行扩展，形成宽带的低功率谱密度信号发射，使用不同的伪随机序列编码，不同通信用户可在同一频段、同一时间工作，互不影响或干扰极小地进行通信。(Spectrum, from the electromagnetic waves used term, and the general existing conventional means of communication is entirely different. Spread spectrum communication using pseudo-random code to the information data (narrowband signal) to extend the spectrum, the formation of low-power spectral density broadband signal transmission, using different pseudo-random sequence of coding, different communication users at the same frequency band, at the same time work, mutual does not affect or interfere with a very small way to communicate.)

eigvec Eigenvectors and their geometric multiplicity. eigval Eigenvalues and their algebraic multiplicity. EIGSHOW presents a graphical experiment showing the effect on the the unit circle of the mapping induced by various 2-by-2 matrices. determ Matrix determinant plu. cramer Solve the system Ax=b.

SIMPLE SUSPENSION TEST ON WHEEL

HP i8042-based System Device Controller driver.

用db2、db4小波分解奇异点检测，其中用wnoise产生测试信号(use db2 and db4 detect strange point and wnoise was used to produce test signal)

说明：  LT CODING： ENCODING AND DECODING OF FOUNTAION CODE(LT ENCODING AND DECODING)

fingerprint estimation

直接序列扩频，在matlab上的程序，及其仿真图，希望可以为matlab入门的人有所启发。(Direct Sequence Spread Spectrum on matlab program, and simulation map, hoping to inspire people to matlab entry.)

GARCH模型，用于时间序列金融模型分析工具(garch model)