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说明：  removal of 50 hz noise (power line interference) from ecg signal using adaptive filtering

说明：  完整的QPSK的调制与解调，已调试通过，认真学习一下(QPSK modulation and demodulation)

Aloha implementation in matlab

图像的缩放，采用两种方法，可以直接运行。向后映射，1.最近领域法，2.双线性插值法(Image scaling, two methods can be run directly. Backward mapping, a recent field of law, (2) bilinear interpolation)

该程序主要是完成2FSK调制解调这样一个过程。(The program mainly completes the process of the modulation and demodulation 2FSK.)

bp网的程序，设计一个神经网络字符分类器对英文字母进行分类。输入向量含有16个分量，输出向量分别用设置的T向量，还不完善，有待改进(bp network program, character design a neural network classifier to classify the English alphabet. Input vector contains 16 components, respectively T vector output vector set, not perfect, needs improvement)

wvelet trasnform decomposition of images

线列阵指向性图，用于水声领域换能器基阵的指向性仿真(Line array directivity diagram for the field of underwater acoustic change point simulation of energy converter arrays)

In the 80′s most companies did not improve their service level because of the Economy Model in exercise and because of financial reasons. In this brief paper i try to demonstrate this statement.

21种特殊函数的数值计算的matlab代码，包括bessel函数，gamma函数，beta函数等(21 kinds of special functions matlab numerical code, including bessel function, gamma function, beta function, etc.)