WAP-to-check-whether-a-given-system-H1

OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术，实际上OFDM是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。本程序实现OFDM与QPSK技术的比较(This program realization technology and the OFDM QPSK technology)

此程序为解非线性方程组的逆Broyden秩1迭代法，为MATLAB源程序(This procedure for the solution of nonlinear equations inverse Broyden iteration rank 1 for MATLAB source code)

speaker recognition:some matlab source codes and notes

随机森林分类器 可以实现分类 适合初学者学习参考(Neural network classifiers can be used to classify information for beginners to learn)

a sliding P ID mode controller with P ID sliding surface is p resented. Lyapunov stability theory was utilized to achieve the stability analysis. And while there exists uncertainty in satellite inertia parameters or external disturbance

16APSK调制的MATLAB实现函数，映射为4+16APSK的星座图(16APSK modulation of MATLAB functions mapped to the constellation 4+16APSK)

用谱减法实现语音的降噪，经典的谱减法完整源代码。(Of voice with spectral subtraction noise reduction, spectral subtraction classic full source code.)

直流电机双闭环调速系统MATLAB仿真,KT=0.5,有超调(DC motor double closed loop speed control system MATLAB simulation, KT = 0.5, there is overshoot)

仪表表盘识别程序，基于matlab编写。可识别数字表盘和指针表盘。对于清晰可辨的图片有较高的可靠性(Instrument dials recognition program, based on matlab prepared. Identifies digital dial and pointer dial. For legible image with high reliability)

此代码是采用matlab编写的最优化算法，主要是对求解函数进行最优化分析，最终求出最优解。(This code is prepared using matlab optimization algorithm, the main function is to solve the optimization analysis, the final optimal solution obtained.)