FFT

第一：边界加强，通过估计噪声和实际信号的比值，来确定各个尺度的细节系数，以达到噪声抑制和边界加强。第二，通过对小波分解的近似部分进行直方图均衡，达到加大整幅图片的对比度，而不太影响细节的目的。(First: to strengthen the border, through the estimates and the actual signal noise ratio, to determine the details of each scale factor, so as to achieve noise suppression and boundary strengthening. Secondly, the wavelet decomposition of the approximate portion of histogram equalization to increase the contrast of the whole images, and do not affect the details of the purpose.)

least squares description

本文档分别采用A律和U律进行PCM的解码。(This document use A_law and u_law to decode the PCM code.)

基于matlab的雷达信号仿真分析，包含过程讲解与代码(Based on analysis of radar signal simulation matlab, including the process of explanation and code)

this code will convert gray to rgb

用于epcm的uart开发的代码，含有matlab和c代码的对比与应用(Uart for the development of the epcm code, matlab and c contain comparing and application code)

正交扩频码ooc的matlabb代码。五个用户情况 (Orthogonal spread spectrum the code ooc matlabb code. Five users)

现代信号处理中RLS算法的程序，非常实用，可清晰的看出该算法与其他算法的差异.(Modern Signal Processing RLS algorithm procedures, very practical, you can clearly see the difference between this algorithm and other algorithms.)

功率谱密度估计。welch法功率谱密度估计，协方差法估计，Burg法估计。(psd estimate。welch，covariance，Burg。)

(2,1,4)卷积码BCJR译码器的实现，算法参照信道编码理论教材，注释很容易理解(（2,1,4）conversion code, BCJR decoding)