正确率可以达到98％，信号处理中的旋转不变子空间法，部分实现了追踪测速迭代松弛算法，包含特征值与特征向量的提取、训练样本以及最后的识别，采用波束成形技术的BER计算，搭建OFDM通信系统的框架。-Accuracy can reach 98 , Signal Processing ESPRIT method, Partially achieved tracking speed iterative relaxation algorithm, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, By applying the beam forming technology of BER Build a framework OFDM communication system.