分布式天线系统中选择合并的衰落统计分析

山东大学学报(工学版)

分布式天线系统中选择合并的衰落统计分析

李政¹；王晓东²；卜智勇³

1. 海军航空工程学院电子工程系，山东烟台264001；2. 海军潜艇学院航海观通系，山东青岛266071;3. 上海无线通信研究中心，上海200050

收稿日期:2006-09-25 修回日期:1900-01-01 出版日期:2007-10-24 发布日期:2007-10-24
通讯作者: 李政

Fade statistics of selection diversity in distributed antenna systems

LI Zheng¹；WANG Xiao-dong²；BU Zhi-yong³

1. Department of Electronic Engineering,Naval Aeronautical Engineering Institute；2. Department of Navigation and Communication,Naval Submarine Academy；3. Shanghai Research Center for Wireless Communications

Received:2006-09-25 Revised:1900-01-01 Online:2007-10-24 Published:2007-10-24
Contact: LI Zheng

摘要/Abstract

摘要： 对于采用选择合并方案的分布式天线系统，当各分集支路经受独立且不等同分布的复合衰落时，分析了系统合并输出包络的平均电平交叉率和平均衰落持续时间，得到这些二阶统计量的精确表达式. 该方法对于任意分集支路数目下的Rayleigh-lognormal，Ricean-lognormal和Nakagami-lognormal三种复合衰落环境均是有效的. 仿真结果验证了所得表达式的正确性.

关键词: 分布式天线系统, 复合衰落信道, 选择分集, 平均电平交叉率, 平均衰落持续时间

Abstract: In the selection of combining distributed antenna systems, exact expressions for the average level crossing rate (LCR) and average fade duration (AFD) of the output signal envelope are derived. The diversity branches are assumed to be independent but non-identical composite fading channels. The results are valid for arbitrary diversity order and the amount of fading, and are obtained for Rayleigh-lognormal, Riceanlognormal and Nakagami-lognormal composite fadings. Numerical results validate the derived expressions.

Key words: distributed antenna access system, composite fading channel, selection diversity, average level crossing rate, average fade duration

中图分类号:

TN911.2

李政,王晓东,卜智勇 . 分布式天线系统中选择合并的衰落统计分析[J]. 山东大学学报(工学版), 2007, 37(5): 83-88 .

LI Zheng,WANG Xiao-dong,BU Zhi-yong . Fade statistics of selection diversity in distributed antenna systems[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2007, 37(5): 83-88 .

参考文献

多维度评价

Viewed

Full text

Abstract

Cited

Shared

Discussed