Downlink Performance Evaluation of Centralized and Distributed Antenna Systems in Multicell Multiuser Spatial Multiplexing Environment

Author

Li, Lee ; Li, Guanjie ; Zhou, Feng ; Wu, May

Author_Institution

Intel Commun. Technol. Lab., Intel Corp., Beijing

fYear

2008

fDate

12-14 Oct. 2008

Firstpage

1

Lastpage

4

Abstract

In this paper, we compare the downlink performance of multiuser spatial multiplexing of centralized antenna system (CAS) and distributed antenna system (DAS) in interference-limited cellular scenario. We present the implementation of multiuser spatial multiplexing in a multicell system based on selection diversity. And two user scheduling strategies based on proportional fairness is proposed too. In a typical MIMO configuration (base station with 4 antennas, mobile station with 2 antenna), we achieve the evaluation of spectrum efficiency and user throughput for both CAS and DAS. The results show that compared with CAS with same number of transmit antennas, DAS can support multiuser diversity better and significantly improve the system capacity and cumulate distribution of user throughput.

Keywords

MIMO communication; cellular radio; multiuser channels; space division multiplexing; transmitting antennas; MIMO configuration; base station; centralized antenna systems; distributed antenna systems; downlink performance evaluation; interference-limited cellular scenario; mobile station; multicell multiuser spatial multiplexing environment; proportional fairness; selection diversity; transmit antennas; Content addressable storage; Downlink; Fading; Frequency; Interference; MIMO; Mobile antennas; Scheduling; Throughput; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on

Conference_Location

Dalian

Print_ISBN

978-1-4244-2107-7

Electronic_ISBN

978-1-4244-2108-4

Type

conf

DOI

10.1109/WiCom.2008.7

Filename

4677916