z-n

2、4、8、16电平仿真 现代通信系统仿真(2,4,8,16-level simulation of modern communication system simulation)

matlab在数字信号处理中的应用（第2版）课件(matlab in Digital Signal Processing (2nd edition) Courseware)

computes the compositions of the integer N into K parts

考虑一个信道失真了的脉冲x(t)，在均衡器的输入端由下式表示：x(t)=1/(1+(2t/T)^2) 其中1/T为符号率。该脉冲以2/T采样率被采样，而且用一个2K+1=11的强迫归零均衡器进行均衡。写一个Matlab程序来解这些迫零均衡器的系数，求出并画出这个迫零均衡器50个采样值的输出。(Considering a channel distortion of the pulse x (T), the input end of the equalizer is represented by the X (T) =1/ (1+ (2t/T) ^2). 1/T is a symbol rate. The pulse is sampled at the 2/T sampling rate and is balanced by a 2K+1=11 forced zero equalizer. A Matlab program is written to solve the coefficients of these zero forcing equalizers and to find out and draw the output of the 50 sampling values of the zero forcing equalizer.)

说明：  可以降维分析，还有bp神经网络，非常方便学习。大家可以随意下载，(Dimensionality reduction analysis)

说明：  分别为AWGN信道模型下BPSK调制的程序；AWGN信道模型下BPSK调制LDPC编码的程序；AWGN信道模型下BPSK调制、采用具有不同列重的构造矩阵进行LDPC编码的程序；AWGN信道模型下BPSK调制、采用不同的迭代译码次数进行LDPC编码的程序。(LDPC coding program for AWGN channel)

Basic step-up chopper

实现遗传算法的基本历程，可以自由修改变异概率，交叉概率，迭代次数等(Basic Course genetic algorithm, can be freely modified mutation probability, crossover probability, the number of iterations)

Simple Feature Extraction matlab sorce code, for learning purposes,

切比雪夫数字低通滤波器设计及与rememz对比(Chebyshev low-pass digital filter design)