QPSK_Matlab

abs 绝对值、模、字符的ASCII码值 acos 反余弦 acosh 反双曲余弦 acot 反余切 acoth 反双曲余切 acsc 反余割 acsch 反双曲余割 align 启动图形对象几何位置排列工具 all 所有元素非零为真 angle 相角 ans 表达式计算结果的缺省变量名 any 所有元素非全零为真 area 面域图 argnames 函数M文件宗量名 asec 反正割 asech 反双曲正割 asin 反正弦

一个求图像世界坐标系的代码，亲自试验过，保证有效。(Find the image of a world coordinate system code, personally tested, to ensure effective.)

信号经过两个独立的信道传输，两个信道的信道复增益分别为 和 。 是独立同分布的复高斯随机变量，实部虚部独立、均值为0，实部虚部的方差都是1。采用某分集技术后输出的信噪比为 ，其中 是常数， 是在 之间均匀分布的随机变量。请就不同的 、 ，用仿真的方法画出 的累积分布函数。(signal after two independent Channel Tunnel, Channel 2 Channel Minute respectively, and gain. Independence is the same complex Gaussian distribution of random variables, is the imaginary part of the Department of independence, mean 0 and the real part of the imaginary part is a variance. Using a diversity of the output signal-to-noise, which is constant, is the uniform distribution between random variables. Please different, and simulation methods paint the cumulative distribution function.)

不同SVD(全局、局部）处理声音、图像、地质信号，里面有一些自己编写的函数，有的地方不太完美(different SVD（global and local) in voice，figure，Geology processing)

说明：  本程序是求解一厚壁圆筒的matlab程序，采用平面等参单元计算(This program is a thick-walled cylinder matlab solving procedure for the calculation of plane isoparametric element)

三相并联有源电力滤波器，基于瞬时无功理论的ip-iq电流检测法，三角波比较控制，抑制谐波电流(Three-phase shunt active power filter based on instantaneous reactive power theory, ip-iq current detection method, the triangular wave comparison control, inhibition of the harmonic current)

对并联机构五自由度系统中的伸缩杆与摆动杆上受的力进行加载与分析(Loading and analysis of the five degrees of freedom parallel mechanism system of the telescopic pole and swing pole by force)

用三种不同的Runge-kutta方法计算常微分方程(Runge-kutta for ODE)

利用MATLAB对扩频信号进行检测和参数估计，结果表明本方法具有在低信躁比下检测的优势(The use of MATLAB for spread spectrum signal detection and parameter estimation results show that this method is in the low than under the letter impatient edge detection)

Voltage source inverter (VSI) with six-step mode and its induction motor (IM) drive simulation in MATLAB/Simulink environment