MATLAB-Numerical-integration

本程序是用MATLAB编写的用于仿真通信系统中信号经过QPSK和16QAM调制后，通过高斯白噪声和瑞利衰落信道的星座图仿真(This program written by MATLAB is for the students who are studying telecommunication.It s very useful to simulate the signal constellation.)

本书详细讲解了数字音频水印的嵌入及提取的算法，并对信息隐藏等都有解释。(The book detailed account of digital audio watermark embedding and extraction algorithms, such as information hiding and have to explain.)

光子晶体点缺陷程序，特别是做光子晶体缺陷的同行，可以借鉴一下。(Photonic crystal point defect procedures, especially peers to do the photonic crystal defects, can learn.)

关于水质分析的程序，程序写的很牛！很有参考价值！(On the analysis of water quality of the program, the program was very cattle! A good reference value!)

说明：  小波去噪程序，在别人的程序上有一定的修改，对于任意声音文件a.wav进行小波去噪。(Wavelet denoising procedure, in others there are certain procedural changes, for any sound file a.wav wavelet denoising.)

中值滤波窗口大小影响滤波器性能,3×3滤波窗口可以很好地保持图像细节。提出一种新的自适应中值滤波方法。将3×3窗口中心的极值点作为候选噪声点,若候选噪声点仍然是7×7窗口的极值点,则该点即是噪声点。若以噪声点为中心的3×3滤波窗口的中值不是噪声,则噪声用中值替换。重复以上过程,直到没有噪声点被替换。(Median filter window size affect the filter performance, 33 filter window can be well preserving image detail. Propose a new adaptive median filtering method. The 33 extreme point of the center of the window as the candidate noise the candidate noise is still 77 extreme points of the window, the point is that the noise point. Terms of noise centered on the point 33 filtering window value is not a noise, the noise is replaced with the median. The process is repeated until there is no noise point is replaced.)

运用一种基于相位信息的2FSK与MSK的调制识别方法,来实现MSK与普通的2FSK的识别。通过计算机仿真表明,在SNRE10dB的条件下,该方法识别率达到了100 。 (Based 2FSK use and MSK modulation recognition phase information to achieve a common 2FSK MSK and identification. Through computer simulations show that, under SNRE10dB conditions, the recognition rate reached 100 .)

matlab中调用mathematica(call mathematica functions in matlab)

功率谱估计及其MATLAB仿真 有源码 很不错的(Power Spectrum Density Estimation and the simulation in Matlab)

Sample Communication System