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分布式M IMO天线结构可以降低发射功率,减少小区干扰,而天线选择技术在保持了M IMO系统优点的同时降低成本。TD-SCDMA有独特的时隙结构,可将不同时隙用于不同的天线组来覆盖不同的小区。基于此,提出了一种分布式天线选择的动态小区覆盖技术,采用两级天线选择,第一级可根据用户的具体位置选择天线组并确定覆盖范围,有效减少小区干扰,同时采用了预分配天线组方法,避免了通用天线选择算法的复杂性;第二级在选定的天线组内确定具体的天线,仿真结果说明该方法具有与一般天线选择相同的性能但更简单。
The distributed M IMO antenna structure can reduce the transmission power and reduce the cell interference, and the antenna selection technology reduces the cost while maintaining the advantages of M IMO system. TD-SCDMA has a unique time slot structure, different time slots can be used for different antenna groups to cover different cells. Based on this, a dynamic cell coverage technology for distributed antenna selection is proposed, which adopts two-level antenna selection. In the first stage, the antenna group can be selected according to the specific location of the user and the coverage can be determined so as to effectively reduce the cell interference while adopting the pre-distribution The antenna group method avoids the complexity of the common antenna selection algorithm. The second level determines the specific antenna within the selected antenna group. The simulation results show that this method has the same performance as the general antenna selection but is simpler.