TY - GEN
T1 - A vector perturbation based user selection for multi-antenna downlink channels
AU - Lee, Byungju
AU - Shim, Byonghyo
PY - 2011
Y1 - 2011
N2 - Recent works on multi-user transmission techniques have shown that the linear growth of capacity in single user MIMO system can be translated to the multi-user MIMO scenario as well. In this paper, we propose a method pursuing performance gain of vector perturbation in multi-user downlink channels. Instead of exploiting the maximum available mobile users for communication, we employ small part of them as sacrifice lambs for improving quality of service (QoS) of active users. By controlling information and perturbation vector of sacrificing users, we get considerable improvement in the effective SNR, resulting in large gain in bit error performance. Simulation results show that the proposed method brings substantial performance gain over the standard vector perturbation.
AB - Recent works on multi-user transmission techniques have shown that the linear growth of capacity in single user MIMO system can be translated to the multi-user MIMO scenario as well. In this paper, we propose a method pursuing performance gain of vector perturbation in multi-user downlink channels. Instead of exploiting the maximum available mobile users for communication, we employ small part of them as sacrifice lambs for improving quality of service (QoS) of active users. By controlling information and perturbation vector of sacrificing users, we get considerable improvement in the effective SNR, resulting in large gain in bit error performance. Simulation results show that the proposed method brings substantial performance gain over the standard vector perturbation.
KW - Multi-user downlink
KW - noninteger least square
KW - sacrifice lambs
KW - transmit precoding
KW - vector perturbation
UR - http://www.scopus.com/inward/record.url?scp=79955766857&partnerID=8YFLogxK
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U2 - 10.1109/ITA.2011.5743603
DO - 10.1109/ITA.2011.5743603
M3 - Conference contribution
AN - SCOPUS:79955766857
SN - 9781457703614
T3 - 2011 Information Theory and Applications Workshop, ITA 2011 - Conference Proceedings
SP - 357
EP - 360
BT - 2011 Information Theory and Applications Workshop, ITA 2011 - Conference Proceedings
T2 - 2011 Information Theory and Applications Workshop, ITA 2011
Y2 - 6 February 2011 through 11 February 2011
ER -