NDLI: On the Deployment of Antenna Elements in Generalized Multi-User Distributed Antenna Systems

Content Provider	Springer Nature Link
Author	Feng, Wei Li, Yunzhou Gan, Jiansong Zhou, Shidong Wang, Jing Xia, Minghua
Copyright Year	2009
Abstract	In this paper, we focus on a generalized multi-user distributed antenna system (DAS), where the antenna elements (AEs) are divided into antenna clusters and the antenna clusters are randomly deployed in the coverage area. The mobile terminals equipped with M AEs each are supposed to be uniformly distributed in the coverage area. We are motivated to study the impact of the deployment of antenna elements on the system performance. In the model of consideration, the deployment of antenna elements is characterized by the antenna cluster size V, i.e., the number of AEs within each antenna cluster, and the distribution of the antenna clusters. With the assumption that the antenna clusters are uniformly deployed in the coverage area, the impact of the antenna cluster size V on the uplink sum rate capacity is particularly investigated. The mean square access distance (MSAD), a function of V, is proposed as a reasonable metric instead of the uplink sum rate capacity. From the analysis of the asymptotic behavior of MSAD, we derive an approximate closed-form expression for the expectation of MSAD over system topologies. Then, it is concluded that the ergodic uplink sum rate capacity can be improved due to access distance reduction by scattering AEs further only when V > M. An approximate closed-form expression for the relative variance of MSAD is also derived. And we conclude that the outage uplink sum rate capacity can be improved due to macro-diversity by scattering AEs further only when V ≤ M. In other words, when V ≤ M, the ergodic uplink sum rate capacity can not be improved by scattering AEs further, when V > M, the outage uplink sum rate capacity can not be improved by scattering AEs further. Finally, our analysis is well verified by Monte Carlo simulations.
Starting Page	35
Ending Page	45
Page Count	11
File Format	PDF
ISSN	1383469X
Journal	Mobile Networks and Applications
Volume Number	16
Issue Number	1
e-ISSN	15728153
Language	English
Publisher	Springer US
Publisher Date	2009-10-03
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	distributed antenna systems (DAS) antenna cluster size mean square access distance (MSAD) access distance reduction macro-diversity Business Information Systems Electrical Engineering Computer Communication Networks Communications Engineering, Networks
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Hardware and Architecture Software

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