| 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。 |
| 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 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:November 02, 2004 |
| 基金项目: |
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| Hybrid Diversity for Cascade Distributed Antenna Systems |
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| Abstract: |
| 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. |
| Key words: Distributed antenna system(DAS),Cascaded diversity,Nakagami fading,Lognormal shadowing |
