Abstract: A precoding scheme for solving the co-channel interference (CCI) problem of multiusermulti-input multi-output(MIMO) downlink is proposed. This scheme can implement the joint designs of transmitterand receiver and avoid iteration operation under the minimum mean square error (MMSE) criterion by regardingthe receiver as a matched filter. The CCI in the proposed scheme is eliminated fully by introducing the zero-force(ZF) method into the MMSE criterion. To simplify the joint design further, the vector optimal design problem istransformed into scalar optimal design problem with the singular value decomposition(SVD) of the equivalentchannel matrix. Simulation results show that proposed precoding scheme can achieve better average bit error rate(BER) and sum capacity performance than other non-iterative design scheme.