TY - GEN
T1 - Coordinated multi-cell MU-MIMO downlink transmission with adaptive beam deactivation
AU - Lee, Jin Hee
AU - Ko, Young Chai
AU - Choi, Seyeong
AU - Yang, Hong Chuan
AU - Kim, Sungjin
PY - 2011
Y1 - 2011
N2 - In this paper, we propose an adaptive beam deactivation scheme for the coordinated multi-cell multiuser multiple-input multiple-output (MU-MIMO) downlink system with limited feedback. In the proposed scheme, each user feeds back the indices of a desired beam and multiple undesired beams from its codebook and some channel quality indicators to its base station (BS). Based on the feedback information and the proposed transmitting user set selection algorithm, the coordinating BSs select one user for each BS to serve. Through the numerical example, we show that the proposed scheme achieves comparable sum rate gain compared to the conventional zeroforcing based coordinated multi-cell system with reduced feedback load.
AB - In this paper, we propose an adaptive beam deactivation scheme for the coordinated multi-cell multiuser multiple-input multiple-output (MU-MIMO) downlink system with limited feedback. In the proposed scheme, each user feeds back the indices of a desired beam and multiple undesired beams from its codebook and some channel quality indicators to its base station (BS). Based on the feedback information and the proposed transmitting user set selection algorithm, the coordinating BSs select one user for each BS to serve. Through the numerical example, we show that the proposed scheme achieves comparable sum rate gain compared to the conventional zeroforcing based coordinated multi-cell system with reduced feedback load.
KW - Multi-cell wireless system
KW - adaptive beam deactivation
KW - cell cooperation
KW - inter-cell interference
KW - zeroforcing beamforming
UR - http://www.scopus.com/inward/record.url?scp=84255167676&partnerID=8YFLogxK
U2 - 10.1109/WiMOB.2011.6085404
DO - 10.1109/WiMOB.2011.6085404
M3 - Conference contribution
AN - SCOPUS:84255167676
SN - 9781457720147
T3 - International Conference on Wireless and Mobile Computing, Networking and Communications
SP - 199
EP - 203
BT - 2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob'2011
T2 - 2011 IEEE 7th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob'2011
Y2 - 10 October 2011 through 12 October 2011
ER -