low-pass-filtering

it is helpful to konw the characreristics of bpsk modulation technique

matlab code for Grouped bar plots with error bars

说明：  自学Matlab必备的60个小程序代码,若要实现其他功能可以自行改编，(Self-taught matlab 60 essential small program code, if you want to achieve other functions can be self-adapted,)

说明：  又是一种方式蚁群算法求解旅行商问题的MATLAB源码，可以对比出更改参数时算法效果的优劣。(Ant colony algorithm is a way of solving the traveling salesman problem MATLAB source code, you can change the parameters of the algorithm compared the effect bad. )

This Chapter deals with POinters and Arrays. Sample Programs are given to workout in C++ environment.

数字信号处理，录入语音信号，加入噪声，滤去噪声，显示图形。(Digital Signal Processing)

说明：  这是一本关于系统辨识很好的书本，对初学者很有帮助，是由我们学校长江学者编著的，外面都没有，拿出来分享(This is a very good book on system identification, very helpful for beginners, is edited by our school Changjiang Scholars, and the outside did not work out to share)

matlab幻灯片，对做信号的同行有所帮助，希望可以共同交流！(matlab slides, make the signal for peer help, want to share!)

本设计主要对4PSK调制方式的信号，利用MATLAB的m文件进行最佳接收机的设计与仿真。对输入的叠加噪声的4PSK调制信号进行接收，利用相关解调器来实现信号解调，及最大似然准则来实现检测器。在相关解调器中，接收信号分别与基函数 和 相乘再积分。在检测器中，利用相位来判断输出，从而最终得到接收的数据。采用随机二进制数通过4PSK调制后叠加高斯白噪声再对设计的接收机进行测试，从测试的结果可看出，在信噪比大于-8dB时，误码率为0，说明该接收机较好的实现了抗噪声性能。(The design of the main 4PSK modulation mode of the signal, the use of MATLAB m file for the best receiver design and simulation. The 4PSK modulated signal of the input superimposed noise is received, and the demodulator is realized by the relevant demodulator, and the maximum likelihood criterion is used to realize the detector. In the associated demodulator, the received signal is multiplied by the basis function and multiplied by the basis function. In the detector, the output is judged by the phase, and finally the received data is obtained. Using the random binary number through 4PSK modulation after the superposition of white noise and then the design of the receiver to test the test results can be seen in the signal to noise ratio greater than-8dB, the bit error rate is 0, indicating that the receiver is better The realization of the anti-noise performance.)

使用matlab实现两幅彩色图像的配准，并且显示它们的匹配点。(It realize the match of two color pictures and show the match point of them.)