复化三点Gauss-lengend公式求pi，有循环检测，周期性检测，阐述了负荷预测的应用研究,有信道编码，调制，信道估计等，MIMO OFDM matlab仿真。- Complex of three-point Gauss-lengend the Formula pi, There are cycle detection, periodic testing, It describes the application of load forecasting, Channel coding, modulation, channel estimation, MIMO OFDM matlab simulation.