pengfei

A filter bank structure that can deal effectively with piecewise smooth images with smooth contours, was proposed by Minh N Do and Martin Vetterli. The resulting image expansion is a directional multiresolution analysis framework composed of contour segments, and thus is named contourlet. This will overcome the challenges of wavelet and curvelet transform. Contourlet transform is a double filter bank structure. It is implemented by the pyramidal directional filter bank (PDFB) which decomposes images into directional subbands at multiple scales. In terms of structure the contourlet transform is a cascade of a Laplacian Pyramid and a directional filter bank. In essence, it first use a wavelet-like transform for edge detection, and then a local directional transform for contour segment detection. The contourlet transform provides a sparse representation for two-dimensional piecewise smooth signals that resemble images.

ofdm 非常详细的程序，有很多子程序，很经典，有用哦！(ofdm simulation)

说明：  产生正弦波、均匀白噪声、高斯白噪声图形；利用小波变换去噪并求信噪比。(Sine wave, uniform white noise and Gauss white noise are generated; wavelet transform is used to denoise and SNR is calculated.)

说明：  无线通信原理系统应用中用到的MATLAB仿真，对与学习无线通信原理及MATLAB都很有帮助滴(pricinples of communication system simulation with wireless aplications with MATLAB)

This paper proposes an improved Z-source inverter topology. Compared to the traditional Z-source inverter, it can reduce the Z-source capacitor voltage stress significantly to perform the same voltage boost, and has inherent limitation to inrush current at startup. The control strategy of the proposed Z-source inverter is exactly the same as the traditional one, so all the existing control strategy can be used directly. A soft-start strategy is also proposed to suppress the inrush surge and the resonance of Z-source capacitors and inductors. The operation principle of the proposed topology and comparison with the traditional topology are analyzed in detail. Simulation and experimental results are given to demonstrate the new features of the improved topology.

基于遗传算法的BP优化（电力系统负荷预测）(BP optimization based on genetic algorithms)

说明：  LMS算法的simulink demo，以及根据demo写的程序，已测试通过(LMS algorithm simulink demo, and demo written in accordance with procedures, have been tested)

Lab 2 – Synthesizable MATLAB This lab exercise will explore the effects that different MATLAB coding styles have on hardware. The lab has two parts, each of which begins with a short introduction. This lab exercise is based on the simple MATLAB FIR filter model shown below:(Lab 2- Synthesizable MATLABThis lab exercise will explore the effects that different MATLAB coding styles have on hardware. The lab has two parts, each of which begins with a short introduction. This lab exercise is based on the simple MATLAB FIR filter model shown below:)

说明：  实现了Gardner算法的仿真，可以直观的分析其实现同步的过程(Realize the simulation of Gardner algorithm ,and the process of synchronization can be analyzed intuitively.)

说明：  该代码实现两幅图像的匹配，有详细的说明与报告(The code to achieve the matching of two images, a detailed explanation and report)