butterworth-lowpass-filter

说明：  家庭心电图仪及远程诊断系统,设计心电仪参考(Family ECG devices and remote diagnostic system, the design of ECG instrument reference)

包含两个代码，分别是全局直方图均衡和局部直方图均衡，适用于不同情形(Global and local histogram equalization)

该程序是使用Matlab仿真协同通信的DF（解码转发）基本性能，基本模型S-R-D三个节点，接收端使用MRC（最大比合并）。固定DF由于SR信道的错误，其性能受到限制，在大SNR情况下不能获得有效分集。而当SR距离足够近的时候，可能获得一定的分集增益(The program is a cooperative communication using Matlab simulation DF (decode forwarding) basic performance, the basic model of the SRD three nodes, the receiver uses the MRC (maximum ratio combining). Fixed DF error of the SR channel, its performance is limited, can not obtain a valid diversity in the large SNR case. When the SR close enough, you may get a certain amount of diversity gain)

FIR与IIR滤波器在DSP上的实现.　　　DSP是利用计算机或专用DSP处理器，以数字形式对信号进行采集、变换、滤波、估值、增强、压缩、识别等处理，以得到符合人们需要的信号形式。FIR(Finite Impulse Response)滤波器：有限长单位冲激响应滤波器，又称为非递归型滤波器，是数字信号处理系统中最基本的元件，它可以在保证任意幅频特性的同时具有严格的线性相频特性，同时其单位抽样响应是有限长的，因而滤波器是稳定的系统。(FIR and IIR filter is implemented on the DSP. DSP is the use of a computer or a dedicated DSP processor in digital form to the signal acquisition, conversion, filtering, valuation, enhancement, compression, recognition processing needs of the people to give signal form. FIR (Finite Impulse Response) filter: finite impulse response filter units, also known as non-recursive filters, digital signal processing system is the most basic element, it can guarantee any amplitude-frequency characteristics of both a strict linear phase-frequency characteristics, while the unit sampling response is of finite length, and thus the filter is stable system.)

对信道编码的模块测试和系统测试。包含内外编码、突发长度、AWGN信道、莱斯信道、瑞利信道、信道自环等。(The channel coding module testing and system testing. Includes internal and external coding, burst length, AWGN channel, Rice channel, Rayleigh channel, the channel from the ring.)

MATLAB UDP局域网PC之间进行通信，并传递数据。。。。(MATLAB UDP)

Eigen value - Eigen vector - Matlab code

通信系统的自适应均衡器，能够恢复失真的PSK信号(Adaptive equalizer communication system, a PSK signal to recover distorted)

很多的MATLAB源程序，可以用于一般的学习和应用。(Many of the MATLAB source code can be used for general learning and application.)

对图像进行分块，进而对待训练图像进行随机采样(The code randomly sample patches from images)