层叠分布式天线系统混合分集技术  

Hybrid Diversity for Cascade Distributed Antenna Systems

作　　者：李汉强[1] 郭伟[1] 郑辉[2] 

机构地区：[1]电子科技大学抗干扰通信国家重点实验室,四川成都610054 [2]西南电子电信技术研究所信号处理重点实验室,四川成都610041

出　　处：《电讯技术》2005年第4期83-86,共4页Telecommunication Engineering

摘　　要：研究了层叠分布式天线系统(CascadeDistributedAntennaSystem,CDAS)空间两层分集的中断概率性能。层叠分布式天线系统包括间隔较远的N个天线簇,每个天线簇包括距离较近的L个天线单元。文中推导了层叠分布式天线系统中断概率的表达式。相比于传统的单天线系统,数值仿真表明采用混合分集的分布式天线系统可以有效抑制快衰落和阴影衰落。This paper analyzes the diversity performance of distributed antenna（DA） systems. When compared with conventional centralized antenna systems, distributed antenna systems can acquire space diversity advantage through scattering the antenna in a wide area. To evaluating the diversity performance of DA systems, theoretical analysis of outage probability is made. The results prove that in a DA system, hybrid diversity can efficiently combat the composite fading. The numerical result is also given.

关 键 词：分布式天线系统 层叠分集 Nakagami快衰落 对数正态阴影衰落 

分 类 号：TN82[电子电信—信息与通信工程]