census

FFT变换(快速傅立叶变换) 用于学生实验参考例程(this folder includes FFT transform and some reference examples for students to experiment)

完整的RS编译码仿真程序，基于matlab仿真实现(integrity of the RS encryption simulation program, based on Matlab Simulation)

永磁同步电机的矢量控制系统仿真，采用id=0的控制策略。在此基础上加入位置环，实现永磁同步电机的伺服系统(Permanent magnet synchronous motor vector control system simulation, using the id = 0 control strategy. On this basis, adding the position loop, to achieve permanent magnet synchronous motor servo system)

Prueba1 FletcherReeves Hernández Santiago José Maestría en Ciencias de la Computación Septiembre / 2011 1. Comenzar con un punto arbitrario 2. Calcular Gradiente de Fi 3. Si el Gradiente Fi es igual a 0(converge), termina 4. Si el Gradiente Fi es !=0 continuar 5. Encontrar dirección de búsqueda Si= -GradienteFi= - Gradiente F(Xi) 6. Determinar la Longitud Optima del incremento lamda(i) en dirección Si X(i+1)=X(i)+lamda(i)*S(i)= X(i)-lamda(i)*Gradiente F(Xi) 7. Hacer i=2 8. Obtener Gradiente Fi 9. Calcular Si= -GradFi + ( [abs(GradFi)^2]/[abs(GradF(i-1))^2] )*S(i-1) 10. Determinar la Longitud Optima del incremento lamda(i) en dirección Si X(i+1)=X(i)+lamda(i)*S(i)= X(i)-lamda(i)*Gradiente F(Xi) 7. Verificar Optimalidad de X(i+1) Si es optimo, detener Si no es optimo hacer i=i+1 e ir al paso 8

Estimates the power spectral densities (PSDs) using the EB method with q = 0 for deciding the diagonal loading.

二元ldpc译码器 min-sum算法 迭代次数固定 输入信号长度一帧512bits(binary ldpc decoder. min-sum algorithm。fixed iter number.512 bits/frame)

说明：  常规OFDM系统容易导致ICI，为了消除ICI，在信号传输前进行编码，本系统为1/2PCC编码，提高系统效率。(Conventional OFDM system easily lead to ICI, is encoded in the signal before transmission, in order to eliminate ICI, this system for 1/2PCC encoding to improve system efficiency.)

线性规划的示例程序，包括线性规划所需要的子程序(Example of the linear programming procedures, including linear programming subroutine)

说明：  灰色预测 命令形式为x=[19519,19578,19637,19695,16602,25723,30379,34473,38485,40514,42400,48337] gm(x)(Grey command of the form x = [19519,19578,19637,19695,16602,25723,30379,34473,38485,40514,42400,48337] gm (x))

可以实现跳频和直序列通信仿真，对于初学者可以参考一下(Frequency hopping and direct-sequence communication simulation)