60 GHz毫米波的波束形成与空间复用方法

Beam Forming and Spatial Multiplexing for 60 GHz Millimeter Wave System

波束形成是60 GHz无线通信系统的关键技术。波束形成可以克服路径衰耗并为空间复用提供了可能。提出了一种基于波束形成技术的空间复用方案。该方案是利用PCP/AP收集站点在服务期中的扇区ID信息,建立波束形成信息表。首先计算出已分配服务期与候选服务期中链路站点的最小扇区差值,然后根据最小扇区差值找出与当前候选服务期进行最佳空间复用的已分配服务期。建立了天线测量模型,分析了方案的可行性,比较了不同波束宽度下的空间复用增益。研究结果表明:该方案能获得更高的空间复用增益。

Beam-forming is a key technology for 60 GHz frequency band wireless communication. The use of beam-forming not only can overcome the enormous path loss but also has the possibility of spatial multiplexing. Spatial multiplexing strategy based on beam-forming was proposed. In this scheme,the PCP / AP( Personal basic service set Control Point / Access Point) was able to establish a beam-forming information table based on the collected sector ID information which was used in the existing SP( Service Period). Then the PCP / AP calculated the minimum sector difference about the existing SP and the candidate SP. After that,the PCP / AP chose the best existing SP for the candidate SP. The antenna measurement model was established. The feasibility of the plan was analyzed. The spatial multiplexing gain was compared based on different beam width. Simulation results show that the proposed strategy outperforms the blink selection method.