... cross-correlation matrix of the spreading codes, Ri,j=STiSjas the (ith, jth) submatrix of R ,andAgas the gth di-agonal submatrix of matrix A. We assume that R and Rg,g (for g = 1,2, , G) are ... Sun, and T. J. Lim, A matrix- algebraic approach to linear parallel interference cancellationin CDMA,” IEEE Transactions on Communications, vol. 48,no. 1, pp. 152–161, 2000.[6] A L. Johansson ... parts, thatis, R= D−L−U, where D is block diagonal matrix, that isD= diag(R1,1, R2,2, , Rg,g, , RG,G), and L and U are theremaining lower-left and upper-right block triangular partsof...