说明：  基于Farrow结构的平方内插器，其中输入为8位的小数插值相位和8位的输入数据，实现8位数据输出，仿真验证结果显示此种方法占用资源少。
(Farrow structure based on the square interpolator, which enter the decimal for the 8-bit and 8-phase interpolation of the input data to achieve 8-bit data output, simulation results show that this method, fewer resources are occupied.)