different_filter_design

说明：  QC-LDPC的主程序，IEEE802.16e标准，考察迭代次数对误码率的影响(Various encoding and decoding methods of LDPC)

qpsk 和 qam的完整仿真，非常详细(qpsk qam and the integrity simulation, very detailed)

基于MATLAB的直角坐标潮流计算程序基于MATLAB的直角坐标潮流计算程序(MATLAB-based computer program based on the trend of rectangular coordinates of the rectangular coordinates power flow calculation MATLAB program)

该文件用matlab 详细说明包括连续系统和离散系统的PID 控制，常用数字PID 控制，专家PID和模糊PID 控制，神经PID 控制，遗传算法PID 控制，多变量解耦PID 控制，几种先进的PID 控制，灰色PID 控制，伺服系统PID 控制，PID 实时控制(Utlizing Matlab technology to describe the different PIC strategy,including regular PID control,fuzzy PID control.)

Simulink 高手教材，让你简单的掌握这些内容！

matlab命令行环境的常用操作 再发个详细的，大家帮忙给顶顶 (Matlab command line environment of commonly used operating again issuing a detailed, after another to help everyone)

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

说明：  按FPE定阶的 源程序：fpe.cpp M序列：M序列.txt 白噪声：Gauss.txt 程序中先用依模型阶次递推算法估计模型的参数，再用fpe方法判断模型的阶次。 程序运行结果如下： n: 1 判断阶次FPE的值: 0.0096406 -0.481665 1.07868 n: 2 判断阶次FPE的值: 0.00875755 -0.446739 0.00498181 1.07791 0.0527289 n: 3 判断阶次FPE的值: 0.0087098 -0.459433 0.120972 -0.0569228 1.07814 0.0390757 0.116982 n: 4 判断阶次FPE的值: 0.000396884 -0.509677 0.4501 -0.200906 0.0656188 1.07991 -0.0156362 0.442989 0.0497236 n: 5 判断阶次FPE的值: 3.2095e-007 -1.18415 0.813123 -0.517862 0.34881 -0.116864 1.07999 -0.744141 0.474462 -0.253112 0.122771 n: 6 判断阶次FPE的值: 3.23349e-007 -1.14659 0.76933 -0.487651 0.329676 -0.10377 -0.00440907 1.07999 -0.703574 0.447253 -0.235282 0.113587 0.00479688 从以上结果可以看出，当n=5时，fpe值最小，所以这时的模型阶次和参数估计值为最优结果： 3.2095e-007 -1.18415 0.813123 -0.517862 0.34881 -0.116864 1.07999 -0.744141 0.474462 -0.253112 0.122771(err)

testing for register purpose, while this is not to offend people, but to help myself.

Solaris 2.6以后，SUN删除了版本号中的"2"，因此，SunOS 2.10就叫做Solaris 10。 Solaris的早期版本后来又被重新命名为Solaris 1.x(After Solaris 2.6 , SUN deleted version number "2" , therefore , SunOS 2.10 is called Solaris 10. Earlier versions of Solaris later was renamed Solaris 1.x )