PCA

eye picture示模型。修改高斯白噪声信道的SNR值可以看到不同情况下的eyepicture (eye picture show model. Modified Gaussian white noise channel SNR value can be seen under different circumstances eyepicture)

说明：  最小生成树的kruskal算法 自己写的 要是再说有重复 我可就怒了(the Kruskal minimum spanning tree algorithm wrote it myself if I say that there is no duplication of anger on)

设r是f(x) = 0的根，选取x0作为r初始近似值，过点（x0,f(x0)）做曲线y = f(x)的切线L，L的方程为y = f(x0)+f (x0)(x-x0)，求出L与x轴交点的横坐标 x1 = x0-f(x0)/f (x0)，称x1为r的一次近似值。过点（x1,f(x1)）做曲线y = f(x)的切线，并求该切线与x轴交点的横坐标 x2 = x1-f(x1)/f (x1)，称x2为r的二次近似值。重复以上过程，得r的近似值序列，其中x(n+1)=x(n)－f(x(n))/f (x(n))，称为r的n+1次近似值(Let r is f (x) = 0 root, select the initial approximation x0 as the r, over point (x0, f (x0)) to do the curve y = f (x) the tangent L, L the equation y = f ( x0)+ f ' (x0) (x-x0), find the intersection of L and the x-axis of abscissa x1 = x0-f (x0)/f' (x0), x1 is called an approximation r. Through points (x1, f (x1)) to do the curve y = f (x) the tangent, and find the intersection of the tangent with the x-axis of abscissa x2 = x1-f (x1)/f ' (x1), x2 is called r the second approximation. Repeat the process, get an approximation of the sequence r, where x (n+1) = x (n)-f (x (n))/f ' (x (n)), as an approximation of r n+1 times)

说明：  卡尔曼滤波器是用前一个估计值和最近一个观察数据估计信号的值，他是用状态方程和递推的方法进行估计，本例用来追踪一个5阶的FIR不确定的滤波器系数。(Kalman filter is to use the previous estimate and the most recent observation data to estimate the value of the signal, he is using the state equation and recursive estimation methods, in this case is used to track a 5-order FIR filter coefficients of uncertainty.)

Matlab的OFDM在多径Rayleigh信道下的同步 1. 假设频率已同步，设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 2. 设时间已同步，设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线.(Matlab-OFDM in multipath Rayleigh channel synchronization 1. Assume that the frequency has been synchronized, the design of a specific OFDM cyclic prefix for time synchronization method, using Simulink simulation to depict the bit signal to noise ratio and the capture probability curve. 2. Set up time is synchronized to design a specific OFDM cyclic prefix for frequency synchronization method, using Simulink simulation to depict the bit signal to noise ratio and frequency synchronization error of the curve.)

说明：  本文提 出了基于功率预留的准入控制策略。首先介绍一种资源分配算法，该算法将可用信 道完全分配从而实现基站发射功率最小化。在此基础上，分别为小区间切换用户和 小区内切换用户设计预留策略，并根据系统的业务载荷自适应地调整功率预留量， 从而实现GOS的最优化。 (there exists a fundamental tradeoff between bandwidth and power. In this thesis, we propose a novel admission control scheme based on power reservation. Foremost, we introduce a joint subchannel and power allocation algorithm for WiMAX system, which minimizes the overall downlink transmit power by utilizing all available subchannels. Based on this, we propose two power reservation schemes for inter-cell handoff calls and intra-cell handoff calls, respectively. The amount of reserved power is determined in an adaptive manner for optimizing the metric of Grade of Service(GoS). )

有关matlab的相关知识的汇总内容比较基础易学比较容易掌握(Summary of the basis of knowledge about matlab)

可逆气固化学热泵制冷系统的动态模拟--考虑热容随反应进度的变化(Reversible dynamic simulation of gas-solid chemical heat pump refrigeration system- consider the change of heat capacity with the reaction progress)

回声信道模型,双通道,无法正确识别的情况.(Echo channel model, dual-channel, can not correctly identify the situation.)

说明：  网络函数逼近实例1.首先定义正弦函数，采样率为20Hz，频率为1Hz 2.生成BP网络。用newff函数生成前向型BP网络，设定隐层中神经元数目为10 3.对生成的网络进行仿真并做图显示。 4.训练。对网络进行训练，设定训练误差目标为 1e-5，最大迭代次数为300 5.再次对生成的网络进行仿真并做图显示。(Network function approximation example)