An easy systolic arrays structure forlinear decorrelating and MMSE multiuser detectorsin DS/CDMA systems is proposed in this paper. Theproposed structure is a linear combination of noise-less channel modules (NCM), and it overcomes thedisadvantages in previously proposed implementationschemes such as setting up a sliding data window andcomputing the inverse of the correlation matrix dy-namically. The amount of multiplications in the de-tector is only proportional to the number of users.