matlabstudy

在基带产生MSK信号 在基带产生MSK信号 在基带产生MSK信号(producing the equivalent baseband MSK signal )

obtain the constellation diagrams and BER vs SNR curve of Quadrature Phase Shift Keying

这是Simulink关于模拟调幅的模型。希望对初学者有用。(This film is based on Simulink simulation model of amplitude modulation. Hope useful for beginners. )

MUSIC算法是一种基于矩阵特征空间分解的方法。从几何角度讲，信号处理的观测空间可以分解为信号子空间和噪声子空间，显然这两个空间是正交的。信号子空间由阵列接收到的数据协方差矩阵中与信号对应的特征向量组成，噪声子空间则由协方差矩阵中所有最小特征值（噪声方差）对应的特征向量组成。MUSIC算法就是利用这两个互补空间之间的正交特性来估计空间信号的方位。噪声子空间的所有向量被用来构造谱，所有空间方位谱中的峰值位置对应信号的来波方位。MUSIC算法大大提高了测向分辨率，同时适应于任意形状的天线阵列，但是原型MUSIC算法要求来波信号是不相干的。(MUSIC algorithm is a matrix decomposition method based on feature space. From the geometric point of view, the observed spatial signal processing can be decomposed into signal subspace and noise subspace, it is clear that the two spaces are orthogonal. The signal received by the array to the subspace of the covariance matrix of the signal component corresponding eigenvectors, the noise subspace of the covariance matrix of all by the smallest eigenvalue (noise variance) eigenvectors corresponding to the composition. MUSIC algorithm is the use of orthogonal properties between these two complementary space to estimate the spatial orientation of the signal. Noise subspace of all vectors are used to construct the spectrum, all the spatial orientation of the spectrum corresponding to the peak position of the signal wave direction. MUSIC algorithm greatly improves the resolution measurements, while the antenna array adapted to any shape, but the prototype MUSIC algorithm requires to wave sign)

产生随机序列的卡尔曼滤波器滤波，与普通的滤波器的比较(Generate a random sequence of the Kalman filter filtering, comparison with ordinary filter)

controlled Half wave rectifier circuit with resistive load with freewheeling diode and gives positive half cycle and block negative half cycle.

一种基于模糊控制的PID算法，入门级别同学可以下载学习(Based on fuzzy PID control algorithm, the entry-level students can download learning)

在二维空间里有两个点A=(X1，Y1)和B=(X2，Y2)，如果X1>X2并且Y1>Y2 ，我们认为A优于B，A是这个集合的最大极值点，在给定的二维空间里的N个点的集合S中，找出最大极值点。(In two-dimensional space, there are two points = A = (X1, Y1) and B (X2, Y2), if the X1 and Y1 > X2 > Y2, we think that A is superior to B, A is the biggest extreme value point of the set, in A given set of N points in the two-dimensional space S, find out the most extreme value point.)

改程序实现了大尺度和小尺度衰落信道的模拟，可以通过改变载波、通信距离、阴影衰落标准差来观察信道容量的变化。(Change the program to achieve a large-scale and small-scale fading channel simulation, you can change the carrier, communication distance, shadow fading standard deviation to observe the changes in channel capacity.)

说明：  带注释的一维粒子滤波MATLAB程序，适合初学者学习。(Notes with one-dimensional particle filter MATLAB program, suitable for beginners to learn.)