is equivalent to calculation of the inverse of Nt matrices with dimensions of Nr×i,i=1,2,…,Nt. It is noteworthy that the inverse of each matrix must be calculated Nc times (one time for each subcarrier). 北卡罗来纳接收器的复杂与Nt矩阵反面的演算是等效的以维度Nr×i, i=1,2,…, ...