Title :
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
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;
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
DOI :
10.1109/GLOCOMW.2011.6162484
