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设计巴特沃斯低通和高通IIR数字滤波器，得到二阶频率级联参数(Design of Butterworth low-pass and high-pass IIR digital filters, to be cascaded second-order frequency parameter)

说明：  信号的双边带am调制，相干解调仿真。通信原理matlab仿真设计。(Double sideband signal am modulation, coherent demodulation simulation. Communication theory matlab simulation design.)

现代通信系统matlab第七章载波调制的数字传输源代码(Modern communications systems matlab Chapter VII of the carrier modulated digital transmission source code)

小波变换和用小波变换做的滤波器的Matlab源代码。(Wavelet transform and the wavelet filter Matlab source code.)

分数阶傅里叶变换对chirp信号进行解调，同时对比匹配滤波器的解调性能(Fractional Fourier transform of the chirp signal is demodulated, and the demodulation performance comparison of the matched filter)

用来仿真fsk PSK 误码率用来仿真fsk PSK 误码率(simulate the ber of fsk and psk)

基于MATLAB环境下的运用迭代法求解线性方程组的对应的代码 简单易学 便于初学者消化使用(Based on MATLAB environment using iterative method for solving linear equations corresponding code is easy to learn for beginners to use digest)

FCM模糊聚类算方法的matlab实现，实现其基本功能(FCM fuzzy clustering algorithm method matlab to achieve, to achieve its basic function)

说明：  杂波的一个MATLAB仿真，杂波的产生：先生成一个（0，1）分布的随机数r，让后根据poission分布产生杂波的个数n，这n个杂波是服从均匀分布(Clutter a MATLAB simulation, the resulting clutter: a President (0,1) distribution of the random number r, let poission distributed according to the number of clutter have n, that n is subject to a uniformly distributed clutter)

DCT域音频水印算法代码，用于音频媒体版权的保护(Audio Watermarking Algorithm for DCT-domain code)