somlvq

设计一M阶自适应回波抵消器，已u(n)作为系统输入，d(n)作为系统期望响应，其中d(n)中混有u(n)的回声，信号以8kHz采样，现要求回波抵消器可以消除16ms之内的回声(The design of a M-order adaptive echo cancellation, and have u (n) as the system input, d (n) as a system to respond to the expectations, in which d (n) in a mixture of u (n) of the echo signal to 8kHz sampling, are requirements 16ms echo cancellation device can be eliminated within the echo)

常用matlab的程序，对于初学者是非常有意义的。(The most commonly used MATLAB program for beginners is very meaningful.)

xwch_test.m是主测试文件；biaoji.mat存放滤波器系数；xiangweicha.m用FFT计算相位差。 仿真框架为： 1.标记信号和双音信号续接作为发送信号； 2.对双音中一个频率分量的相位做偏移，再经过一个低通滤波器（引入线性相位，模拟收发不能同步测量现象）后，作为收到的信号； 3.用一个检测信号对收发信号进行相关运算； 4.画出收发信号以及相关处理后的信号。找出相关信号的那个尖点，从而推算出收发双音信号0相位点； 5. 输入0相位点位置，计算相对相位差。(xwch_test.m is the main test file biaoji.mat store filter coefficients xiangweicha.m calculated using FFT phase difference. Simulation framework: 1. Mark signals and then as a two-tone signal continued to send signals 2. On a two-tone frequency components of the phase shift to do, and then through a low pass filter (the introduction of linear phase, simulation can not simultaneously send and receive measuring the phenomenon), the as received signal 3. using a detection signal of the transceiver signal correlation operation 4. draw send and receive signals and related processed signal. Correlated signal of the cusp, which calculate the two-tone signal transceiver 0 phase point 5. Enter 0 phase point position, calculate the relative phase difference.)

hannel estimation performance for Discard Prefix DS-CDMA against the transmitted data vector

m-file matlab for backward toward powerflow

Digital band-pass filter design, digital low-pass filter design, the digital noise signal is filtered out of the frequency band, spectrally move to restore the speech signal through a low pass filter

一个用ATSAM7S64的例子，初学者可以(A used ATSAM7S64 example, beginners can)

说明：  计算弹性波带隙结构，主要针对二维的弹性波计算z方向的带系结构(Calculation of elastic wave band-gap structures, mainly for two-dimensional calculation of the elastic wave with the direction z structure)

窄带信号生成，生成窄带信号，可以自己调节信号的基础信息(Narrow-band signal generation)

ukf在MATLAB下的仿真程序，ukf是对非线性函数的概率密度分布的近似估计。(The UKF s simulation program in MATLAB, UKF is the estimate of the probability distribution of nonlinear function.)