QPSK_T1_R1

This code permit to simulate the sound received on microphones given their positions, the positions of the sound source(s), the frequency sampling of acquisition and the speed of sound. Assuming anechoical conditions.

通信系统matlab仿真可能用到的程序，比如高斯噪声，功率算法，并联与直联系统的转换等(Telecommunication system may be used in matlab simulation , for instance gaussian noise, power algorithm, parallel and straight league system conversion etc)

projet 3 is very importand

16qam,10dB,对学习正交振幅调制的同学有很大的帮助。(16qam, 10dB, quadrature amplitude modulation for the students to learn a great help.)

in this file wrote digital modulation function for about all digital modulation

说明：  图着色，采用图论的方法进行图形着色，首先采用相邻矩阵，计算顶点之间的关系(Graph coloring. Graph coloring is done by graph theory. First, the adjacent matrix is used to calculate the relationship between vertices.)

该代码仅计算了一个101×101尺寸的Gabor函数变换，得到均值和方差。代码采用两种卷积计算方式，从结果中可以看出，快速傅立叶变换卷积的效率是离散二维叠加和卷积的近50倍。 (The code is only the calculation of a 101 × 101 size Gabor function transformation, the mean and variance. Convolutional code using two methods of calculation can be seen from the results, fast Fourier transform convolution efficiency are two-dimensional discrete convolution superposition and nearly 50 times.)

输入信号五个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，得到识别出的信号类别，本例为2PSK, 4PSK, GMSK, OQPSK, pi/4DQSK中的一个，还可以看Art网络的扩展性。(input signal instantaneous information on five characteristics : In the center is one of the instantaneous rate of the power spectral density of the maximum, is a center to the absolute value of the instantaneous rate of the standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component absolute standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component standard deviation, In the center is one of the non-weak signal of the absolute value of the instantaneous frequency standard deviation, the identification of signal type, The cases of two PSK, 4PSK, GMSK, OQPSK, pi/4DQSK of one, Art can be viewed network scalability.)

图像压缩的matlab算法之JPEG，DCT算法。(matlab jpeg dct)

模拟退火粒子群算法代码 matlab版本 供大家参考(Simulated annealing particle swarm algorithm code)