TY - GEN
T1 - Multimode random beamforming for multiuser downlink MIMO system with limited feedback
AU - Chae, Hyukjin
AU - Kim, Yohan
AU - Yang, Jang Hoon
AU - Ihm, Bin Chul
AU - Kim, Dong Ku
PY - 2008
Y1 - 2008
N2 - Multimode transmission has been studied to improve BER and outage capacity in the point-to-point system. In this paper, we consider the multimode transmission for downlink MIMO based on random beamforming(RBF) with limited feedback. We propose four heuristic mode selection and feedback policies to improve the sum rate and outage performance of downlink RBF system based on two approaches: distributed and centralized. Simulation results show that the centralized mode selection scheme with reasonable feedback amount provides waterfilling effect as well as the multiuser diversity gain, leading to the performance improvement of RBF in terms of sum rate and outage probability.
AB - Multimode transmission has been studied to improve BER and outage capacity in the point-to-point system. In this paper, we consider the multimode transmission for downlink MIMO based on random beamforming(RBF) with limited feedback. We propose four heuristic mode selection and feedback policies to improve the sum rate and outage performance of downlink RBF system based on two approaches: distributed and centralized. Simulation results show that the centralized mode selection scheme with reasonable feedback amount provides waterfilling effect as well as the multiuser diversity gain, leading to the performance improvement of RBF in terms of sum rate and outage probability.
UR - http://www.scopus.com/inward/record.url?scp=47749149607&partnerID=8YFLogxK
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U2 - 10.1109/VETECS.2008.182
DO - 10.1109/VETECS.2008.182
M3 - Conference contribution
AN - SCOPUS:47749149607
SN - 9781424416455
T3 - IEEE Vehicular Technology Conference
SP - 837
EP - 841
BT - 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
T2 - 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
Y2 - 11 May 2008 through 14 May 2008
ER -