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un article de J.Betz contient la modulation BOC

说明：  matlab电子书；详细介绍了matlab的各种功能；适合初学者(e-book matlab detailed information on the various functions of matlab suitable for beginners)

hopfield network for neural network

txt格式心电信号的载入及滤波，滤波方法有巴特沃斯低通和小波分析(txt format to load and ECG filtering, Butterworth filtering methods and wavelet analysis of the low-pass)

buck-boost升降压电路，输入电压为100v，输出电压为160v，采用PI控制调节系统占空比(boost-buck circuit, the input voltage is 100v, the output voltage of 160v, using PI duty cycle control regulation system)

deec and leach protocol

关于DOA估计，即波达方向估计的matlab程序，经过检验可以直接运行，适合于刚入门的同学(About DOA estimation, DOA estimation matlab program can be run directly tested, suitable for students just getting started)

关于语音增强的一些算法心得，如谱减法自适应滤波以及听觉掩蔽效应等。(on speech enhancement algorithms some experiences, such as spectral subtraction adaptive filtering and auditory masking effect.)

一个50行的Matlab有限元程序（二维非线性问题），执行fem2d_nonlinear.m即可。(A 50-line Matlab finite element program (two-dimensional nonlinear problems), the Executive fem2d_nonlinear.m can.)

QPSK 在高斯信道下的调制解调的matlab仿真实现，可显示输入数据的波形表示，I支路和Q支路以及调制前、解调后、接收的波形、星座图等(In the Gaussian channel QPSK modulation and demodulation matlab Simulation, the waveform can be displayed, said input data, I branch and Q branch, and before modulation, demodulation, the received waveform, constellation, etc.)