exam5_1

Erlang formula. Best formula for probability calculation

this is some code for modulation and demodulation

语音端点的检测，短时能量、平均过零率,门限，matlab(vad enfram enger zcr)

使用粒子群算法解决优化问题，该算法有全局搜索和局部搜索能力，方便快捷。(Particle swarm algorithm to solve the optimization problem, the algorithm global search and local search capability, quick and easy.)

正交相位调制QPSK的数字调制于解调的matlab实现(Digital quadrature phase modulation QPSK modulation in demodulation matlab realization)

this code extract the ellipse from noisy image by morphology method

利用MATLAB绘制等温线，以湖南省为例，绘制了省界，97县的位置以及等温线。(plot temperature contour through MATLAB.)

simplex 矩阵，由 Hadamard 矩阵转化而来，可用于脉冲编码技术，另附序列相关函数程序 (simplex matrix, the Hadamard matrix transformed from pulse coding techniques can be used, attached serial correlation function of the program)

说明：  利用干涉仪测向，显示出无相位模糊与有相位模糊的比较相关代码(Direction-finding phase ambiguity of interferometer)

Calculate the capacity of MIMO system in iid channel model scenario and plot.