中文说明： 插值与拟合，解方程，数据分析，对HARQ系统的吞吐量分析，借鉴了主成分分析算法（PCA），连续相位调制信号(CPM)产生，包括随机梯度算法，相对梯度算法，三相光伏逆变并网的仿真。
English Description：
Interpolation and fitting, solving equations, data analysis, throughput analysis of HARQ systems, using principal components analysis (PCA), continuous phase modulation (CPM), including stochastic gradient algorithm, gradient algorithm and simulation of three-phase grid-connected photovoltaic inverter.