关键词: 多输入多输出, 预编码, 多用户, 协作

Abstract: In view of interference among cells and users in cooperative MIMO system, precoding schemes based on a criterion are often adopted. However, the single target will cause an unbalanced performance. In order to optimize overall system performance, a precoding scheme is proposed under a unified framework. Based on the convex optimization theory, Lagrange equation is applied to the proposed algorithm solution. It is observed that the algorithm in objectivet function convergence speed and the capacity of the system has certain advantages. The simulation results demonstrate the feasibility of the proposed scheme.

Key words: Multiple Input Multiple Output（MIMO）, precoding, multi-user, cooperative