spectrum

nonlinear control jalase14

说明：  AR模型估计，语音信号的AR参数估计，简单小程序(AR model estimation, AR parameters of the speech signal estimate, simple applet)

先归一化输入输出参数，用KMens优化RBF神经网络中心值，然后计算隐节点数据中心间的距离（矩阵），得到各隐节点的扩展常数（宽度），接着用最小二乘法得到各隐节点的输出权值，对数据进行反归一化，并绘图得到神经网络输出与测试集图，同时进行性能评价(First, the input and output parameters are normalized, the central value of the RBF neural network is optimized by KMens, then the distance (matrix) between the data centers of the hidden nodes is calculated, and the extended constant (width) of the hidden nodes is obtained. Then the output weights of the hidden nodes are obtained by the least square method, and the data are back normalized, and the neural network is drawn. Output and test set diagrams, and performance evaluation)

扩展卡尔曼滤波的算法程序，里面包含了一阶和二阶的ekf预测M文件，希望对大家有帮助(EKF extended kalman filter matlab filter algorithm,can be used to 1st order Extended Kalman Filter prediction step, 1st order Extended Kalman Filter update step,2nd order Extended Kalman Filter prediction step ,2nd order Extended Kalman Filter update step)

二阶数学模型的NLJ辨识MATLAB实现，仿真结果验证了NLJ在系统辨识中的可操作性.(Identification of second-order mathematical model of the NLJ MATLAB implementation, simulation results show the NLJ in the System Identification operability)

LDPC码的Matlab仿真，希望对大家有用， (LDPC code of the Matlab simulation, in the hope that useful to everybody,)

QPSK modulation system with recover loops(This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. The transmitter?s symbol period is T and set to a value of 100 ms. The symbol period at the receiver is Tr. The model will produce six windows: Two constellation plots and two eye diagrams (for the real part only), at the output of the matched fi lters and after the recovery loops a plot of the phase error (output of the NCO) and a plot of the fractional timing error (used in the interpolator). The frequency off set at the receiver is denoted by deltaf. The model simulates the transmission of 8000 QPSK symbols.)

说明：  本程序有传统的MUSIC算法和基于分数低阶矩的MUSIC算法 在alpha稳定分布下的性能仿真(this programme contain the performence of traditonal MUSIC algorithm and FLOC MUSIC algorithm under the alhpa steady distrubution)

在matlab中实现心10s电数据动态显示(In the heart of the matlab realize 10s electricity dynamic data display)

A matlab code to compute heat conduction