Communication-theory

pwm法计算二维光子晶体能带的另一个程序，已经分享了一个,这是另一个,编写方法不同,精度更高。程序完整含有注释,能同时显示TE和TM波的能带结构。略作修改也可分开显示。 (pwm method of two-dimensional photonic crystals with another program)

matlab生成白噪声程序，直接输入幅值和频率即可(matlab program to generate white noise, amplitude and frequency can be directly input)

阵列信号处理中的一个重要的算法：子空间拟合ssf算法源程序(An important algorithm，Subspace Fitting Algorithm，in array signal processing. )

用firgr函数设计的两种类型的FIR低通滤波器，( minorder/minodd )边界频率fre_edge=[0 .345 .575 1]*pi 显示幅频特性(Firgr function design with two types of FIR low-pass filter, (' minorder/minodd' ) boundary frequency fre_edge = [0 .345 .575 1]* pi shows the amplitude frequency characteristics)

iris数据集，matlab可以直接导入(iris data set, matlab can be directly imported)

主要介绍了matlab软件中的画图语句，便于大家参考学习(Matlab software drawing statements for easy reference learning)

alphabet recognization, a simplified version only to detect few numerical pronunciations

说明：  雷达信号处理 chirpZ变化代码 初学者可以参考一下(Radar signal processing chirpZ change code for beginners to refer to)

《数字信号处理》（程佩青第３版）课后上机实验的程序(" Digital Signal Processing" (Cheng Peiqing version 3) experiment on the computer after school program)

音频压缩matlab代码，使用时先将6段代码分别编译，在command窗口中运行main函数即可。(Audio compression matlab code, use the first six sections of the code were compiled, the main function can be run in a command window.)