omp-belong-to-greedy-algorithm

代码说明：

  属于贪婪算法中正交匹配追踪算法，用于信道估计预编码中，利用稀疏性，减小信道估计和反馈的开销，此算法的输出为所需要的系数矩阵，压缩包中还有一些说明(Belonging greedy algorithm orthogonal matching pursuit algorithm, used for channel estimation pre-encoding, the use of sparsity, channel estimation and feedback to reduce the overhead, the output of this algorithm is required for the coefficient matrix, the compressed package and some instructions)