TY - GEN
T1 - Achievable sum rate bounds of zero-forcing based linear multi-user MIMO systems
AU - Chae, Chan Byoung
AU - Heath, Robert W.
AU - Mazzarese, David
PY - 2006/1/1
Y1 - 2006/1/1
N2 - In this paper, jointly optimized linear transmit beamforming and receive processing for the downlink of a multi-user multiple input multiple output (MIMO) system is investigated. In this system the base station, equipped with multiple antennas, transmits to several users, who are also equipped with multiple antennas. To solve the dimensionality constraint imposing by conventional block diagonalization (BD), we propose an iteration based coordinated beamforming (CBF) method and also consider block diagonalization with receive antenna selection (BDRAS) for performance comparison. We show the upper and lower bounds on ergodic sum rate of CBF and BDRAS. Analysis and simulation results show that the proposed beamforming always outperforms conventional BDRAS, and achieves a sum rate close to the MIMO broadcast channel (BC) sum capacity.
AB - In this paper, jointly optimized linear transmit beamforming and receive processing for the downlink of a multi-user multiple input multiple output (MIMO) system is investigated. In this system the base station, equipped with multiple antennas, transmits to several users, who are also equipped with multiple antennas. To solve the dimensionality constraint imposing by conventional block diagonalization (BD), we propose an iteration based coordinated beamforming (CBF) method and also consider block diagonalization with receive antenna selection (BDRAS) for performance comparison. We show the upper and lower bounds on ergodic sum rate of CBF and BDRAS. Analysis and simulation results show that the proposed beamforming always outperforms conventional BDRAS, and achieves a sum rate close to the MIMO broadcast channel (BC) sum capacity.
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M3 - Conference contribution
AN - SCOPUS:84940659014
T3 - 44th Annual Allerton Conference on Communication, Control, and Computing 2006
SP - 1134
EP - 1140
BT - 44th Annual Allerton Conference on Communication, Control, and Computing 2006
PB - University of Illinois at Urbana-Champaign, Coordinated Science Laboratory and Department of Computer and Electrical Engineering
T2 - 44th Annual Allerton Conference on Communication, Control, and Computing 2006
Y2 - 27 September 2006 through 29 September 2006
ER -