Title :
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
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;
Conference_Titel :
Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on
Conference_Location :
Yunnan
Print_ISBN :
978-0-7695-3501-2
DOI :
10.1109/CMC.2009.319
