chazhifangzhen

work with grafic transformation

说明：  用matlab仿真实现ldpc编解码，BPSK调制, 测定误码率与信噪比的关系(Using matlab simulation to realize LDPC Encoding and decoding, BPSK modulation, and to determine the relationship between bit error rate and signal-to-noise ratio)

在MATLAB仿真环境下，该程序是对OFDM系统的接收端的模拟仿真实现(In the MATLAB simulation environment, the program is the receiving end of the OFDM system simulation experiment)

一、 本程序采用16QAM调制方式，对一串2进制信源进行调制，用升余弦滚降函数进行基带调制，再调到高频信道；在信道上加入高斯白噪声，运用匹配滤波器解调，画出解调星座图，运用最小欧氏距离译码判决，计算误比特率。(First, this program uses 16QAM modulation mode, for a string of two binary source is modulated with a raised cosine roll-off function for base-band modulation, and then transferred to high-frequency channel in the channel by adding Gaussian white noise, the use of matched filter device demodulator, draw demodulation constellation, using the minimum Euclidean distance decoding decision, calculate bit error rate.)

QPSK的MATLAB仿真,仅供大家学习(QPSK the MATLAB simulation, for everyone to learn)

用于计算超长程表面等离子体共振角度谱的反射率曲线(super long-range surface plasmon resonance is used to calculate the spectral reflectance curves of the angle)

滤波器程序，通过低通滤波器对数据进行滤波处理(Low-pass filter , mainly for time series filtering process .)

实现两幅图像的配准，首先对图像做高斯低通滤波处理 ，然后计算互信息值，利用PWELL算法求出最优的参数，根据所得参数进行配准(To achieve the registration of two images, the first image to do the Gaussian low-pass filter, then calculate the mutual information value, use PWELL algorithm to determine the optimal parameters, in the light of registration parameters)

说明：  计算最小路径最大流的程序，计算效果很好，小费大流(To calculate the minimum path maximum flow program )

A highly comprehensive lecture in understanding basics of electronics