main5_2

simulation and software radio for mobile communication

QPSK信号通过瑞利衰落信道后的误比特率和误符号率，并与AWGN信道下的误比特率和误符号率进行对比。其中，多普勒频移为 100Hz，经过矩形脉冲成形后的抽样时间间隔为1/800000s。(The QPSK signal harms the bit rate after the Rayleigh fading channel and harms the mark rate, and harms the bit rate with the AWGN channel under and harms the mark rate to carry on the contrast. And, the Doppler shift is 100Hz, after undergoing the square pulse forming the sampling time gap is 1/800000s. )

a bc converter alpha be to dq

文件中有两个97提升小波程序，可以直接在matlab中运行，已经试过(File has two 97 lifting wavelet procedures can be directly run in matlab, have tried)

用于多通道滤波器组实现完全重构,主要应用于图象处理(For multi-channel filter banks achieve perfect reconstruction, mainly used in image processing)

灰色理论的讲解，带有matlab程序实例说明，代码可以直接复制使用(Gray theory to explain, with the matlab program examples, the code can be copied directly use)

MATLAB Program for Band Structure Computation of 1D PhC by Means of FDTD Method

说明：  这是一个基于最大信息判据的盲源分离算法程序，这个程序能很好的分离信号。(This is a criterion based on the maximum information algorithm for blind source separation procedures, which can be a very good signal separation.)

说明：  16Qam在瑞利衰落下的matlab仿真，包括误码率计算以及理论分析(16Qam matlab under Rayleigh fading simulation, including calculations and theoretical analysis of bit error rate)

Gaussian noise refers to its obey gaussian probability density function (i.e., normal distribution) of the noise. If a noise, its amplitude distribution obeys the gaussian distribution, and its power spectral density is uniformly distributed, has described it as a gaussian white noise. Were not associated with the second order moments of the gaussian white noise, a moment is constant, 所谓高斯噪声是指它的概率密度函数服从高斯分布（即正态分布）的一类噪声。如果一个噪声，它的幅度分布服从高斯分布，而它的功率谱密度又是均匀分布的，则称它为高斯白噪声。高斯白噪声的二阶矩不相关，一阶矩为常数，是指先后信号在时间上的相关性。高斯白噪声包括热噪声和散粒噪声。 (Gaussian noise refers to its obey gaussian probability density function (i.e., normal distribution) of the noise. If a noise, its amplitude distribution obeys the gaussian distribution, and its power spectral density is uniformly distributed, has described it as a gaussian white noise. Were not associated with the second order moments of the gaussian white noise, a moment is constant, refers to the correlation of signal in time. White gaussian noise including thermal noise and shot noise. )