This algorithm utilizes time-average channel correlation matrix in place of exact channel correlation matrix and approximates the MMSE estimator by a low-rank structure.

The paper represents the conception and cauculation of the rank correlation coefficient, and shows us the practical function and cauculation by way of practice examples in textile research.

Rank correlation analyses show that all of the runoff sequence change with tendency, and the sudden change appeared in 1948, as concluded by order cluster analysis method.