QPSK_AWGN

MATLAB 点 线 面交点问题的探讨程序！(point line circuit ……)

说明：  自抗扰控制器Simulink仿真，其中包含跟踪微分器，扩张状态观测器，非线性反馈。(Simulink simulation of active disturbance rejection controller, including tracking differentiator, extended state observer, nonlinear feedback.)

This is a matlab file for constellation of an 8psk modulation

this is image filter design

用matlab写的模式识别中C均值分类算法，数据被分成2类，经验证正确(Pattern recognition with matlab written in C-means classification algorithm, the data is divided into two categories, proven correct)

气泡动力学仿真，可以实现不同频率及声压仿真。(Bubble dynamics simulation can be achieved at different frequencies and sound pressure simulation.)

图像的多分辨率处理算法研究，附加相应的matlab代码(image processor matlabcode)

小波树形变换，完成小波的三次分解与合并，能用于小波去噪(Tree wavelet transform, the completion of the three wavelet decomposition and merging, can be used for wavelet denoising)

matlab使用过程中经常会使用到的常用数值算法。(often use to matlab the process of using the numerical algorithm.)

Abstract—In this paper, a new lossy technique based on wavelet transform for compression of breast ultrasound images is presented. The experiments are performed on 16 different wavelet functions and the quality of reconstructed images is evaluated by using Compression Ratio (CR), Normalized Mean Square Error (NMSE), Normalized Absolute Error (NAE), and Peak Signal to Noise Ratio (PSNR) criterion. An ultrasonographer performed the subjective assessment. This study shows that among the utilized wavelets,