sanjiaowangge-qumian-chongjian

MATLAB 潮流计算程序，前推回代方法计算潮流分布(MATLAB flow calculation procedure, forward and backward substitution trend of the distribution method)

Matlab源程序代码，用于拟合超二次曲线，曲面的代码，呵呵，与大家一起分享受(Matlab source code for the quadratic curve-fitting, surface code Oh, and that they have enjoyed.)

模拟2个独立窄带信号分别以20°，60°的方向入射到均匀线阵上信号间互不相关，与噪声相互独立，噪声为理想高斯白噪声，阵元数为10，阵元间距为入射信号波长的1／2，信噪比为20dB，快拍数分别为5，50，200。(Simulate two independent narrowband signals in the direction of 20 °, 60 ° of the incident on the ULA between signal uncorrelated with independent noise, the noise is ideal Gaussian white noise, the array element number 10, the array element spacing of the incident 1/2 wavelength of the signal to noise ratio of 20dB, the number of snapshots 5,50,200 respectively.)

利用Matlab仿真软件，完成如图1所示的一个基本的数字通信系统。信号源产生0、1等概分布的随机信号，映射到16QAM的星座图上，同时一路信号已经被分成了实部和虚部，后边的处理建立在这两路信号的基础上。实部、虚部信号分别经过平方根升余弦滤波器，再加入高斯白噪声，然后通过匹配滤波器（平方根升余弦滤波器）。最后经过采样，判决，得到0、1信号，同原信号进行比较，给出16QAM数字系统的误码。(Using Matlab simulation software, as shown in Figure 1 to complete a basic digital communications systems. Signal source such as arise over the distribution of 0,1 random signal, is mapped to 16QAM constellation diagram, at the same time all the way the signal has been divided into real and imaginary parts, behind the deal with the establishment of these two signals in the basis. Real part, imaginary part of the signal, respectively, after a square root raised cosine filter, then add white Gaussian noise, and then through the matched filter (square root raised cosine filter). Finally, after sampling, the verdict has been 0,1 signal, to compare with the original signal is given 16QAM digital system error.)

说明：  正弦信号，单个频率的正弦信号，频率为1KHz，幅度为5(Sinusoidal signal, a single frequency sinusoidal signal, a frequency of 1KHz, the range of 5)

用MATLAB中Simlink工具箱对一类随机中立型时滞系统进行图像仿真.(Simlink toolbox with MATLAB, a class of stochastic neutral delay systems, image simulation.)

说明：  这是MATLAB软件中的产生高斯白噪声的函数，通过参数设置得到你所需要的白噪声，同时可以用于研究随机信号产生的方法。(This is the MATLAB software have a function of Gaussian white noise, through the parameters you need to be white noise, at the same time can be used to study the methods of random signal generator.)

随机粗糙表面对微气体轴承内气体压强分布的影响(Pressure distribution in mircro gas bearing with rough surface)

802.11a物理层仿真代码，matlab(802.11a physical layer simulation code, matlab)

产生各种分布随机数的matlab程序，包括指数分布 高斯分布 瑞利分布 莱斯分布(Distributed random numbers generated matlab various procedures, including the exponential distribution Blaise Gaussian distribution sub-sub-Bu Ruili)