abc-system

matlab code for sharing. this code is use to determine the hough circle

基于MATLAB的MUSIC算法的示例，过程简单易懂，适于新手学习(MATLAB-based examples of the MUSIC algorithm, the process simple, suitable for novice learning)

该程序是一个数值模拟程序，模型是一个带有噪音信息的实际经济周期模型，该问题是实际经济周期的一个前言研究问题(The program is a simulation program, with the noise information model is a real business cycle model, the problem is a real business cycle research question preface)

这是一个用matlab编的模仿Linux下的radar屏保动画,很有意思,和大家分享,(This is an addendum to the use of Matlab imitate Linux Screen Saving under the radar animation, very interesting, and to share with you,)

This paper presents a new algorithm to extract the fetal ECG from an ECG recorded on the mother’s abdomen. The algorithm consists of two steps: first, ECG of fetus is extracted from the original signal using a two-level wavelet transform. We use Daubechie wavelet transform, which is similar in shape to heart beat wave. The resulted signal is then low-pass filtered using the Savitzky-Golay smoothing filter to attenuate the effect of noise. The filtered signal is considered as the fetal ECG. The algorithm was applied on both synthetic and real ECG signals. The results in this paper show that the proposed algorithm has promising performance.

一个实现turbo码的编码和解码，是一个递归卷积码的编解码的程序源码。(A turbo code to achieve the encoding and decoding, is a recursive convolutional encoding and decoding of the program source code.)

说明：  思源科技出版 matlab基础与提高 9-10章 源代码(Si Yuan Foundation and enhance the scientific publishing matlab source code chapter 9-10)

[x,f]= L01p_e(c,A,b,N)用枚举法求解下列 0-1线性规划问题min f=c *x, s.t. A*x<=b,x的分量全为整数0或1, 其中N表示约束条件 Ax ≤ b中的前N个是等式，N= 0时可以省略。 返回结果x是最优解，f是最优解处的函数值。 ([X, f] = L01p_e (c, A, b, N) with the following enumeration method for solving linear programming problems 0-1 min f = c ' * x, st A* x < = b, x is an integer of all components 0 or 1, where N represents the constraints Ax ≤ b in the equation of the first N, N = 0 can be omitted. Return result x is the optimal solution, f is the function value at the optimal solution.)

神经网络修改BP辨识算法，用于辨识复杂的非线性系统，相对传统BP算法，具有计算快等优点(Modify BP neural network recognition algorithm for identification of complex nonlinear system, compared to the traditional BP algorithm has the advantages of quick calculation)

this program try to calculate N dimensional histogram in one of popular way