TY - GEN
T1 - SINR constrained beamforming for a MIMO multi-user downlink system
AU - Shi, Qingjiang
AU - Razaviyayn, Meisam
AU - Hong, Mingyi
AU - Luo, Zhi Quan
PY - 2012
Y1 - 2012
N2 - Consider the multi-user downlink beamforming problem where the base station transmits data to its intended mobile stations. Both the base stations and the users are equipped with multiple antennas. The objective of beamforming is to minimize the power consumption in the network while satisfying the users' SINR constraints. Based on the analysis of the KKT conditions of the problem, we propose a low complexity iterative algorithm that computes a local minimum of the optimization problem. The numerical experiments show that the proposed algorithm is efficient in achieving low power consumption while satisfying the QoS constraints. Our numerical experiments indicate that, unlike many existing algorithms, the proposed method can be initialized from infeasible points. Moreover, our theoretical analysis shows that the algorithm monotonically converges to a KKT point of the problem.
AB - Consider the multi-user downlink beamforming problem where the base station transmits data to its intended mobile stations. Both the base stations and the users are equipped with multiple antennas. The objective of beamforming is to minimize the power consumption in the network while satisfying the users' SINR constraints. Based on the analysis of the KKT conditions of the problem, we propose a low complexity iterative algorithm that computes a local minimum of the optimization problem. The numerical experiments show that the proposed algorithm is efficient in achieving low power consumption while satisfying the QoS constraints. Our numerical experiments indicate that, unlike many existing algorithms, the proposed method can be initialized from infeasible points. Moreover, our theoretical analysis shows that the algorithm monotonically converges to a KKT point of the problem.
UR - http://www.scopus.com/inward/record.url?scp=84876276686&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84876276686&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.2012.6489389
DO - 10.1109/ACSSC.2012.6489389
M3 - Conference contribution
AN - SCOPUS:84876276686
SN - 9781467350518
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1991
EP - 1995
BT - Conference Record of the 46th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2012
T2 - 46th Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2012
Y2 - 4 November 2012 through 7 November 2012
ER -