基于贪婪算法的用户双天线MIMO干扰减轻

摘要

In massive multiple-input multiple-output (MIMO) systems,the pilot contamination effect becomes the only remaining interference when the number of base station antennas goes to infinity.Nowadays the approaches are basically focusing on one antenna user equipment.In this paper,an interference mitigation method in massive MIMO is proposed based on dual antenna user equipment and greedy algorithm.It finishes the interference mitigation with beamforming weight vector at user side combined with picking up suitable users through greedy algorithm.%在大规模MIMO系统中,当基站天线数趋向正无穷时,导频污染成为制约系统性能的干扰因素.目前,针对导频污染减轻的方法多是针对用户端单天线的情况.文中提出一种基于贪婪算法的用户双天线大规模MIMO系统中导频污染减轻方法,通过调节用户端的波束成型权值向量来进行干扰减轻处理并结合贪婪算法选出合适的用户组.