中文说明：采用正交频分复用技术，利用导频，插入循环前缀，利用时间相关性信道，对信号传输的信道进行估计，估计方法有最小二乘法和最小均方误差估计方法
English Description：
Orthogonal frequency division multiplexing (OFDM) technology is used to estimate the channel of signal transmission by using pilot, inserting cyclic prefix and time-dependent channel. The estimation methods include least square method and least mean square error estimation method