matlab-code-of-facerecognize

QPSK-MBOFDM发射接收机 QPSK调制的多频带OFDM（MB-OFDM）发射机，经过加性高斯噪声信道，接收机判断误码率。 (QPSK-MBOFDM launch QPSK modulation receiver multiband OFDM (MB-OFDM) transmitter, through the additive Gaussian noise channel, the receiver determine the error rate.)

改进的背景差分法，结合了背景差分法和帧间差分法的优点，能更好的进行视频处理。(Improved background subtraction method, combining the advantages of the background difference and frame difference method, and better video processing.)

用matlab实现的曼彻斯特 NleyPu编码。50 占空比（可调）。绘制时域波形和频域功率谱密度。结果跟北邮的DwxXJnF 的通信原理课件上的形状一模一样。 .(With Manchester NleyPu encoding matlab realize. 50 duty cycle (adjustable) . Draw time-domain waveform and frequency domain power spectral density. Results with BUPTDwxXJnF Exactly the same shape Wenbin communication on the principles of courseware.)

DC-DC 中升压 减压 用matlab 仿真buck boost buck-boost各个图形(buck boost buck-boost)

多项式拟合的MATLAB工具。只要具有以下几个函数 POLYFITN - A general n-dimensional polynomial fitting tool POLYVALN - An evaluation tool for polynomials produced by polyfitn POLYN2SYMPOLY - A conversion tool to generate a sympoly from the results of polyfitn POLYN2SYM - A conversion tool to generate a symbolic toolbox object from the results of polyfitn (Polynomial fitting of the MATLAB tools. As long as have the following functions POLYFITN- A general n-dimensional polynomial fitting toolPOLYVALN- An evaluation tool for polynomials produced by polyfitnPOLYN2SYMPOLY- A conversion tool to generate a sympoly from the results of polyfitnPOLYN2SYM- A conversion tool to generate a symbolic toolbox object from the results of polyfitn)

说明：  代码是matlab的神经网络预测，外加LyPaunov和维数的GP计算(Code matlab neural network prediction, plus LyPaunov and calculated dimension GP)

The model used for creating the reference voltage is shown in Fig. 4. First, photovoltaic output current (Ipv) and output voltage (Vpv) are passed through a first order low pass filter with a magnitude of G = 1 and a time constant of T = 0.01 seconds in order to filter out the high frequency components or harmonics from these signals as shown in Fig. 5 and Fig. 6. The filtered current and voltage signals (Ipv_F and Vpv_F) are then fed into the MPPT control block that uses the Incremental Conductance Tracking Algorithm. An algorithm that is based on the fact the slope of the PV array power curve shown in Fig. 7 is zero at the Maximum Power Point (MPP), positive on the left of the MPP, and negative on the right. The MPP can thus be tracked by comparing the instantaneous conductance (I/V) to the incremental conductance (∆ I/∆ V) [11] as in (1):

说明：  11电平的MMC的脉冲触发控制方法，含均压控制。(11 level MMC pulse trigger control method, including voltage sharing control.)

useful matlab codes for beginners

说明：  跳频扩频系统仿真误码率分析（双极性不归零码）(Frequency hopping spread spectrum system simulation BER analysis)