波束成形系统与分集系统在下行蜂窝通信中的比较  

Beamforming Versus Diversity in the Downlink of a Cellular Communication System

作　　者：周杰[1] 钱崟[2] 

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044 [2]中国移动通信集团公司泰州分公司,泰州225300

出　　处：《互联网天地》2013年第3期60-67,共8页China Internet

摘　　要：多天线波束成形系统与发送分集系统在下行蜂窝系统中是两种互补的技术。波束成形系统能够提供阵列增益,但是没有分集增益;相反,发送分集系统能够提供分集增益而没有阵列增益。通过计算在有无切换、相关衰落时系统的中断容量、CDF、传输功率等来比较两种系统的性能。Beamforming and diversity are two complementary techniques for using muhiple antennas in the forward link of a cellular communication system. The beamforming provides array gain with no diversity, while the diversity provides the benefit of diversity, but no array gain. Here, a comparative analysis of the two systems, using outage capacity, CDF and transmit power as performance measures, was presented. The effects of handoff and correlated fading were considered in the comparation of the two systems.

关 键 词：波束成形 发送分集 接收分集 容量 

分 类 号：TN929.53[电子电信—通信与信息系统]