flicker_calculater

bmp DCT 压缩 对原图像进行DCT变换，数据压缩，丢弃右下角高频数据，进行DCT反变换，得到压缩后的图像(bmp DCT compression of the original image DCT transform, data compression, discarding the lower right corner frequency data, DCT inverse transform, the images are compressed)

基于互功率谱的时延估计，一些自适应信号处理的算法，是机器学习的例程，包含收发两个客户端的链路级通信程序,旋转机械二维全息谱计算，LDPC码的完整的编译码。

利用遗传算法计算 遍历多个城市 行走路程最小问题(Genetic algorithm to calculate the minimum distance problem of many cities all over)

说明：  设基带码元传输间隔为0.1秒，FSK调制参数分别设置频率间隔为5Hz和20Hz，相位分别设置为不连续的和连续的两种。试对比观察4元FSK调制输出等效低通信号的功率频谱。(Let the baseband symbol transmission interval is 0.1 seconds, FSK modulation parameters are set the frequency interval of 5Hz and 20Hz, respectively, set to the discontinuous phase and continuous two. Observation of test 4 yuan FSK modulation output equivalent low pass signal of the power spectrum.)

Kalman Filtering using matlab have theory and program which is fit to the students.(Kalman Filtering using matlab have theory and program which is fit to the students)

说明：  在线实验：在matlab的simulink板块做数字锁相环设计。(Online experiment: design digital PLL in Simulink of MATLAB.)

gardner算法实现码元同步，希望对大家有用!(gardner symbol synchronization algorithm, in the hope that useful!)

若不希望用与估计输入信号矢量有关的相关矩阵来加快LMS算法的收敛速度，那么可用变步长方法来缩短其自适应收敛过程，其中一个主要的方法是归一化LMS算法（NLMS算法），变步长 的更新公式可写成 W（n+1）=w（n）+ e（n）x（n） =w（n）+ （3.1） 式中， = e（n）x（n）表示滤波权矢量迭代更新的调整量。为了达到快速收敛的目的，必须合适的选择变步长 的值，一个可能策略是尽可能多地减少瞬时平方误差，即用瞬时平方误差作为均方误差的MSE简单估计，这也是LMS算法的基本思想。 (Want to estimate if the input signal vector and the relevant matrix to speed up the convergence rate of LMS algorithm, then the variable step size method can be used to shorten its adaptive convergence process, one of the main method is normalized LMS algorithm (NLMS algorithm) , variable step-size update formula can be written W (n+ 1) = w (n)+ e (n) x (n) = w (n)+ (3.1) where, = e (n) x (n) the right to express filter update vector iterative adjust the volume. In order to achieve the purpose of fast convergence, we must choose the appropriate value of variable step size, a possible strategy is as much as possible to reduce the instantaneous squared error, which uses the instantaneous squared error as the mean square error MSE of the simple estimate, which is the basic LMS algorithm思想.)

利用PSO粒子群搜索算法,辨识PID参数:Kp,Ki,Kd.结果表明虽然该方法辨识精度不是很高,但是也有一定可信度.(Use english PSO Particle Swarm algorithm, identification of PID parameters: Kp, Ki, Kd. The results show that although the method is not very high recognition accuracy, but it also has a certain credibility.)

a source code in matlab that detect text contour in images