中文说明： 算法优化非常好，几乎没有循环，MIMO OFDM matlab仿真,通过虚拟阵元进行DOA估计，对HARQ系统的吞吐量分析，对于初学者具有参考意义，复化三点Gauss-lengend公式求pi。
English Description：
Algorithm very well, almost no circulation, MIMO OFDM MATLAB simulation based on virtual array DOA estimates, HARQ throughput analysis system, is useful for beginners, complex of three Gauss-lengend formula of PI.