xiaobobianhuan

本代码给出了LTE 2天线,4天线发送分集以及接收端解分集的处理过程.(This Code give a way to process 2 and 4 antaners Transport Divation in LTE system.)

用两种向量化和一种循环的思路计算水仙花数，并给出所需时间比较 水仙花数是指一个三位数,其各个数的立方和等于该数(Quantified in two and a loop to the idea of calculating the number of daffodils and narcissus are given the time required for comparison is a three-digit number, the individual cubes, and equal to the number of)

说明：  经典《信号与系统》教程的matlab例程,对深入理解信号与系统相关概念有很大帮助，几乎每章都matlab的例程。(Classic )

捷联惯导系统的matlab程序源代码，包含输出代码，非常好用(The SINS matlab program source code, including the output code, it is very easy to use)

很有用的一本工具书，强烈推荐。 对matlab上手很有用(a very good book to study matlab)

程序对2发2收系统进行ZF算法的仿真。发送信号采用QPSK调制，信道为准静态瑞利平坦衰落信道，引入的噪声为均值为0的高斯白噪声，接收端采用最大似然检测算法，仿真其误比特率特性。(The ZF algorithm simulation program 2 admission system. Send signals using QPSK modulation, channel prevail static Rayleigh flat fading channels, the introduction of noise with mean 0 Gaussian white noise, the receiving end using the maximum likelihood detection algorithm, simulation of the bit error rate characteristics.)

利用三电平中心削波自相关法实现清、浊音判定，并提取一段话音的基频参数，绘制基频曲线，并将该参数曲线合并到前面提取的短时过零率和短时能量参数曲线图中(Using a three-level center clipping from the relevant law to achieve clear, voiced determination, and extract some of the fundamental parameters of the voice, drawing the fundamental frequency curve and merge the parametric curve to the front of the extraction rate and the short-term zero short-term energy parameters graph)

simulink环境下的永磁同步电机的位置环控制，速度曲线为梯形曲线。(simulink environment of permanent magnet synchronous motor position loop control, the speed curve is a trapezoid curve.)

Fisherface方法的实现是在PCA数据重构的基础上完成的，首先利用PCA将高维数据投影到低维特征脸子空间，然后再在这个低维特征脸子空间上用LDA特征提取方法得到Fisherface。程序中使用参数寻优的方法来寻找最佳投影维数，以达到比较理想的识别效果。 (The Fisherface method implemented in the PCA data reconstruction based on the completion of the first use of PCA projection of high-dimensional data to a low dimensional feature subspace, and then on the characteristics of low-dimensional subspace LDA feature extraction methods to get the Fisherface. Program parameter optimization method is used to find the best projection dimension, in order to achieve the ideal identification.)

db6小波分解upcoef重构与wrcoef重构的对比，可换成任意输入(db6 decomposition upcoef reconstruction compared with wrcoef reconstruction can be replaced by any input)