TY - GEN
T1 - Coordinated precoding for downlink multi-user MIMO relay network
AU - Liu, Zhijia
AU - Fei, Zesong
AU - Kuang, Jingming
PY - 2009
Y1 - 2009
N2 - Relay communication network has been widely studied in recent years due to their ability to provide more reliable communication through enhanced diversity. In this work, we consider a downlink multiuser multi-input-multi-output (MU-MIMO) relay network under amplify and forward (AF) protocol. Coordinated relay system can provide the additional diversity gain due to adding the relay station (RS) compared to the direct transmit system. Assuming that the channel state information (CSI) at the base station (BS) is available, we propose a precoding method considering equivalent channel between the BS, RS and user equipment (UE), named as maximum-signal-leakage-and-noise-ratio (SLNR max) that can effectively suppress the co-channel interference (CCI) and noise at the UE. And we also analyze the influence of increasing the number of the UEs on the sum-rate in the MU-MIMO relay network. Theoretical analysis and Monte Carlo simulation results show the un-coded BER and the sum-rate performance with coordinated relay outperforms that without relay.
AB - Relay communication network has been widely studied in recent years due to their ability to provide more reliable communication through enhanced diversity. In this work, we consider a downlink multiuser multi-input-multi-output (MU-MIMO) relay network under amplify and forward (AF) protocol. Coordinated relay system can provide the additional diversity gain due to adding the relay station (RS) compared to the direct transmit system. Assuming that the channel state information (CSI) at the base station (BS) is available, we propose a precoding method considering equivalent channel between the BS, RS and user equipment (UE), named as maximum-signal-leakage-and-noise-ratio (SLNR max) that can effectively suppress the co-channel interference (CCI) and noise at the UE. And we also analyze the influence of increasing the number of the UEs on the sum-rate in the MU-MIMO relay network. Theoretical analysis and Monte Carlo simulation results show the un-coded BER and the sum-rate performance with coordinated relay outperforms that without relay.
KW - Amplify and forward (AF)
KW - Coordinated precoding
KW - Maximum likelihood (ML)
KW - Relay
UR - http://www.scopus.com/inward/record.url?scp=77749338166&partnerID=8YFLogxK
U2 - 10.1109/WCSP.2009.5371648
DO - 10.1109/WCSP.2009.5371648
M3 - Conference contribution
AN - SCOPUS:77749338166
SN - 9781424456680
T3 - 2009 International Conference on Wireless Communications and Signal Processing, WCSP 2009
BT - 2009 International Conference on Wireless Communications and Signal Processing, WCSP 2009
T2 - 2009 International Conference on Wireless Communications and Signal Processing, WCSP 2009
Y2 - 13 November 2009 through 15 November 2009
ER -