数据辅助的载波相位跟踪，在第n个接收符号的DFT之后，导引子载波等于信道频率响应和已知符号的乘积根据余下的频率误差旋转以后的结果。-Data-aided carrier phase tracking in the first n months after receiving DFT symbols, guided subcarriers equivalent channel frequency response and known symbol of the product in accorda