BPA_P

说明：  多径衰落信道下的通信系统建模仿真多径衰落信道下的通信系统建模仿真(Multipath fading channel modeling and simulation of communication systems)

迭代自组织数据分析，部分实现了追踪测速迭代松弛算法，研究生时的现代信号处理的作业，处理信号的时频分析，大学数值分析算法，可以广泛的应用于数据预测及数据分析,包含CV、CA、Single、当前、恒转弯速率、转弯模型，有PMUSIC 校正前和校正后的比较。( Iterative self-organizing data analysis, Partially achieved tracking speed iterative relaxation algorithm, Modern signal processing jobs when the graduate, When processing a signal frequency analysis, University of numerical analysis algorithms, Can be widely used in data analysis and forecast data, It contains CV, CA, Single, current, constant turn rate, turning model, A relatively before correction and after correction PMUSIC.)

BP神经网络容易陷于局部极小值，PSO算法在无约束非线性函数优化方面性能优越，通常可以直接找寻到全局最优解，即使不能搜多到全局最优解，也距离全局最优点不远。当然，基本PSO算法陷入局部极值也是有的。对于这个缺点目前还没有找到比较有效、省市的解决方案。本案例实现利用PSO算法和BP算法共同训练神经网络，先将网络进行PSO算法训练，然后BP算法接着进行小范围精细搜索，PSO算法训练神经网络的本质就是将输出误差函数（即能量函数）看成目标函数，PSO对能量函数进行全局寻找最小值。(BP neural networks are prone to local minimum values. The PS algorithm has superior performance in the optimization of unconstrained nonlinear functions. It can usually find the global optimal solution directly. Even if it can not find more global optimal solutions, it is not far from the global best. Of course, there is also a local extreme of the basic PO algorithm. For this shortcoming, there is no more effective, provincial and municipal solution. This case realizes the use of the SO algorithm and the BP algorithm to train the neural network. First, the network is trained in the SO algorithm, and then the BP algorithm is followed by a small range of fine searches. The essence of the PO algorithm training neural network is to regard the output error function(ie, the energy function) as the objective function, and the PO seeks a global minimum value for the energy function.)

利用LSB算法嵌入隐藏图像，可在广义LSB中设置修改的位平面，返回误码率和峰值信噪比。含各种经典的攻击方式，可用于实验。并可控制攻击的强弱。利用Matlab编写。(LSB embedding algorithm using hidden images, can be generalized to set up modified LSB bit-plane and returned to the bit error rate and peak signal to noise ratio. Containing a variety of classic attack methods can be used for the experiment. Can control the strength of the attack. Prepared using Matlab.)

几种滤波器：hamming窗口的低通滤波器，给定技术指标的模拟巴特沃兹低通滤波器，kaiser窗口的带阻滤波器，blackman窗口的带通滤波器，Kaiser 窗低通滤波器 (Several filters: hamming window low-pass filter, given specifications of the analog Butterworth low-pass filter, kaiser window band stop filter, blackman window bandpass filters, Kaiser window low-pass filter)

无刷直流电机控制系统的研究印度的老外编的(studiedof the Brushless dc motor control system )

svpwm 模型 可用于三相PWM整流 电机控制，参数可调(svpwm model can be used for three-phase PWM rectifier motor control, parameter adjustable)

wimax matlab 程序，可以解决wimax仿真与测试的问题(wimax matlab program)

triangular pulse waveform

语音识别MFCC特征提取matlab代码。 「梅尔倒频谱系数」（Mel-scale Frequency Cepstral Coefficients，简称MFCC），是最常用到的语音特征，此参数考虑到人耳对不同频率的感受程度，因此特别适合用在语音辨识。(Speech recognition MFCC feature extraction matlab code. Mel cepstrum coefficient (Mel- scale Frequency Cepstral Coefficients, MFCC), is the most commonly used to the phonetic characteristics of this parameter given ear to the feelings of different frequencies, so especially suitable for use in speech recognition)