Performance of Downlink Spatial-Multiplexing in Urban Macrocellular Multi-User MIMO Scenarios

Author

Fügen, Thomas ; Porebska, Malgorzata ; Wiesbeck, Werner

Author_Institution

Institut fur Hochstfrequenztechnik und Elektronik, Karlsruhe Univ.

fYear

2006

fDate

11-14 Sept. 2006

Firstpage

1

Lastpage

5

Abstract

The aim of this paper is to compare the performance of different smart antenna algorithms to the performance of a conventional SISO reference system in an urban multi-user MIMO scenario. A single cell with three 120 deg sectors and several moving users is used for evaluation. The scenario as well as the channel information is generated by means of a realistic urban channel model that consists of a model of the city of Karlsruhe, a mobility model and an accurate ray-tracing based wave propagation model. The smart antenna algorithms under test are two single-user MIMO algorithms (user specific beamforming, waterfilling) and two multi-user MIMO algorithms (block diagonalization, successive optimization). Simulation results show clearly the potential of downlink spatial-multiplexing to improve the system capacity, to reduce the exposure, the transmit power and therefore also the operating costs in future cellular mobile radio systems

Keywords

MIMO systems; cellular radio; multi-access systems; multiplexing; radio links; ray tracing; wave propagation; block diagonalization; cellular mobile radio systems; channel information; downlink spatial-multiplexing; ray-tracing model; smart antenna algorithms; successive optimization; system capacity; urban macrocellular multiuser MIMO scenarios; waterfilling algorithms; wave propagation model; Antennas and propagation; Array signal processing; Cities and towns; Costs; Downlink; Land mobile radio; MIMO; Power system modeling; Ray tracing; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on

Conference_Location

Helsinki

Print_ISBN

1-4244-0329-4

Electronic_ISBN

1-4244-0330-8

Type

conf

DOI

10.1109/PIMRC.2006.254315

Filename

4022673