Beamforming versus transmit diversity in the downlink of a cellular communications system

Author

Friedlander, Benjamin ; Scherzer, Shimon

Author_Institution

Dept. of Electr. Eng., Univ. of California, Santa Cruz, CA, USA

Volume

53

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

1023

Lastpage

1034

Abstract

Transmit diversity and beamforming are two complementary techniques for using multiple antennas in the forward link of a cellular communication system. The first provides the benefit of diversity with no array gain, while the second provides array gain, but no diversity. Here, we present a comparative analysis of the two systems, using outage capacity and transmit power as performance measures. The effects of handoff, correlated fading, and power control are considered.

Keywords

antenna arrays; antenna theory; array signal processing; cellular radio; diversity reception; fading; radio links; antenna array gain; beamforming; cellular communications system; correlated fading; downlink; handoff; multiple antennas; outage capacity; power control; transmit diversity; Array signal processing; Diversity methods; Diversity reception; Downlink; Fading; Mobile antennas; Power control; Receiving antennas; Transmitters; Transmitting antennas; Array processing; beamforming; capacity; cellular; diversity; fading; handoff; power control;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2004.830980

Filename

1317206