上海交通大学学报

上海交通大学学报（自然版）

• 无线电电子学、电信技术 • 上一篇    下一篇

改进的分布式天线系统下行链路性能和信道容量

苏才国，何晨   

  1. （上海交通大学 电子工程系， 上海 200240）
  • 收稿日期:2009-01-12 修回日期:1900-01-01 出版日期:2010-02-26 发布日期:2010-02-26

Downlink Performance and Capacity of Improved Distributed Antennas System

SU Caiguo,HE Chen   

  1. (Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2009-01-12 Revised:1900-01-01 Online:2010-02-26 Published:2010-02-26

摘要： 提出了一种改进的蜂窝分布式天线系统结构（IDAS），该结构采用定向天线单元并将其合理放置，通过仿真分析了在3种系统结构下阴影衰落的差异及其相关性对误码率和信道容量的影响.分析和仿真结果表明，相对于现有蜂窝分布式天线系统结构（EDAS）和传统蜂窝结构（TC），IDAS能够更好地降低其误码率并提高信道容量，特别是在小区信道质量非常差的边界区域中.

关键词: 分布式天线系统, 最大比值发送, 相关性, 误码率, 信道容量

Abstract: An improved cellular distributed antennas system (IDAS) configuration was proposed, which adopts directional antennas and lies them reasonably. Comparing with the existing cellular distributed antennas system (EDAS) configuration and traditional cellular (TC) configuration, both the theoretic analysis and simulations validate that IDAS can acquire lower symbol error probability and larger channel capacity especially in the adverse channel conditions. The influence of shadow fading to the signal transmission was also discussed.

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