多小区多用户MIMO系统干扰对齐的优化

多小区多用户MIMO系统中存在小区间以及小区内的干扰,传统方法提出的干扰对齐只针对2个小区或者小区内的干扰进行对齐,缺乏对小区间的干扰进行对齐处理.针对这一问题,提出了一种多小区多用户的干扰对齐优化方案,采用基于机会调制算法进行干扰对齐模式优化,不仅能够简化计算、提高量效率,而且能够消除多小区间和小区内的干扰,获得最佳的容量和多用户分集增益.

Optimization of Interference Alignment in Multi-cell and Multi-user MIMO System

In multi-cell and multi-user MIMO system,both inter-cell and intra-cell interference exist. In the traditional interference alignment methods,the interference between only two ceils or intra-cell interference is considered,and the inter-cell interference is not processed. To eliminate both inter-cell and intra-cell interference, a multi-user and multi-cell MIMO system based on interference alignment mode optimization is not only applied to multiple interference alignment in multi-cell, but also simplifies calculation by using the model based on opportunistic modulation algorithm for interference alignment optimization. The simulation results show that the algorithm increases the channel capacity and improves the energy efficiency.