Jointly optimized two-cell MIMO systems

Author

Chae, Chan-Byoung ; Hwang, Insoo ; Heath, Robert W., Jr. ; Tarokh, Vahid

Author_Institution

Sch. of Integrated Technol., Yonsei Univ., Seoul, South Korea

fYear

2011

fDate

5-9 Dec. 2011

Firstpage

421

Lastpage

425

Abstract

Jointly optimized interference aware coordinated beamforming (IA-CBF) algorithms for a two-cell system are investigated, where each base/mobile station is equipped with multiple transmit antennas. We first derive a minimum-mean-square-error IA-CBF algorithm based on a lower bound on the achievable sum rate. We next propose optimal (under an assumption of zero other-cell interference) and suboptimal transmit/receive beamforming vectors through zero-forcing IA-CBF algorithms. Numerical results confirm that the proposed system shows better sum rate performance than competitive solutions such as non-cooperative eigen-beamforming and interference nulling.

Keywords

MIMO communication; antenna arrays; array signal processing; cellular radio; least mean squares methods; transmitting antennas; MMSE; base-mobile station; interference aware coordinated beamforming algorithms; interference nulling; jointly optimized two-cell MIMO systems; minimum-mean-square-error algorithm; multiple transmit antennas; noncooperative eigenbeamforming; suboptimal transmit-receive beamforming vectors; sum rate performance; zero other-cell interference; zero-forcing algorithms; Array signal processing; Base stations; Interference channels; MIMO; Mobile communication; Vectors; MIMO system; multi-cell system; multiuser system;

fLanguage

English

Publisher

ieee

Conference_Titel

GLOBECOM Workshops (GC Wkshps), 2011 IEEE

Conference_Location

Houston, TX

Print_ISBN

978-1-4673-0039-1

Electronic_ISBN

978-1-4673-0038-4

Type

conf

DOI

10.1109/GLOCOMW.2011.6162484

Filename

6162484