gonglvpuguji

Region growing from a specified point using MATLAB.

说明：  维纳噪声抑制 分辅助观测数据中漏入观测信号和不漏入观测信号两种情况讨论(Wiener noise suppression sub-assisted observational data leak into the observation signal and the signal does not leak into the observation to discuss two cases)

这个是对于fir带通滤波器以及iir低通滤波器的一个仿真。程序代码通俗易懂，意义很大。(This is a band-pass filter and the fir iir low-pass filter with a simulation. Program code easy to understand, very meaningful.)

nvec_power: power supply driver for a NVIDIA compliant embedded controller.

MICROSOFT FOCUS COBOL VERSION 3.0 COMPLIER

FFT的matlab实现,利用蝶形算法计算fft的matlab(Matlab implementation of FFT, using the matlab fft butterfly algorithm)

说明：  matlab数字滤波器设计,计算出参数便于dsp实现bp-ac01(matlab digital filter design, easy to calculate the parameters dsp achieve bp-ac01)

在matlab中用高斯—勒让德方法求二重积分(Seeking double integral using Gauss method in matlab)

首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)

演示龙格库塔方法的绝对稳定区域，从1阶到4阶，且阶数可以调整。另外，区域的左右边界可以计算出来(Absolutely stable region demonstrates Runge-Kutta methods, from an order to the fourth order, and the order can be adjusted. Further, around the boundary region can be calculated)