Transmit antenna beamforming for the Advanced Mobile Phone System

Author

Gerlach, Derek

Author_Institution

Radix Technol. Inc., Mountain View, CA, USA

Volume

2

fYear

1995

fDate

Oct. 30 1995-Nov. 1 1995

Firstpage

1162

Abstract

Adaptive antenna arrays at the base station in cellular radio can be used in both a receive and transmit mode to improve system performance. While the receive problem is well-studied, methods for transmit beamforming have only recently become available. We propose a "closed loop" transmit beamforming method for the Advanced Mobile Phone System (AMPS) which uses feedback from the base to the mobile to aid the base in adapting its beampatterns. This method does not require modification or exchange of the handsets. Preliminary results show the\´s method is able to track spatial channel variations if either the angle spread or Doppler spread is low.

Keywords

cellular radio; AMPS; Advanced Mobile Phone System; Doppler spread; adaptive antenna arrays; angle spread; base station; cellular radio; closed loop transmit beamforming method; feedback; handsets; spatial channel variations tracking; system performance; transmit antenna beamforming; Adaptive arrays; Adaptive systems; Antenna arrays; Array signal processing; Base stations; Land mobile radio cellular systems; Mobile antennas; Mobile handsets; Receiving antennas; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 1995. 1995 Conference Record of the Twenty-Ninth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-8186-7370-2

Type

conf

DOI

10.1109/ACSSC.1995.540882

Filename

540882