On the Optimal Radius to Deploy Antennas in Multi-user Distributed Antenna System with Circular Antenna Layout

Author

Feng, Wei ; Li, Yunzhou ; Zhou, Shidong ; Wang, Jing ; Xia, Minghua

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing

Volume

1

fYear

2009

fDate

6-8 Jan. 2009

Firstpage

56

Lastpage

59

Abstract

In this paper, the uplink of a multi-user distributed antenna system (DAS) with antennas deployed on a circle is investigated. The optimal radius to deploy antennas is studied with the target of sum capacity maximization. Adopting random matrix theory, a good approximation of the per-user sum capacity is derived. We also present a numerical method to calculate the unknown parameters in the approximation. Consequently, as the sum capacity is maximized, we find out the optimal radius of the circle on which the distributed antennas are deployed.

Keywords

antennas; approximation theory; matrix algebra; multi-access systems; random processes; circular antenna layout; multiuser distributed antenna system; random matrix theory; sum capacity maximization; Digital communication; Distributed computing; Information science; Laboratories; Microwave antennas; Microwave communication; Mobile antennas; Mobile communication; Mobile computing; Power control;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on

Conference_Location

Yunnan

Print_ISBN

978-0-7695-3501-2

Type

conf

DOI

10.1109/CMC.2009.319

Filename

4796955