包含位置式PID算法、积分分离式PID，采用波束成形技术的BER计算，搭建OFDM通信系统的框架，实现了对10个数字音的识别，预报误差法参数辨识-松弛的思想，最小均方误差（MMSE）的算法。- It contains positional PID algorithm, integral separate PID, By applying the beam forming technology of BER Build a fr a mework OFDM communication system, To achieve the recognition of 10 digital sound, Prediction Error Method for Parameter Identification- the idea of relaxation, Minimum mean square error (MMSE) algorithm.