TY - GEN
T1 - Joint MMSE precoder and decoder design subject to arbitrary power constraints for uplink multiuser MIMO systems
AU - Lu, I. Tai
PY - 2009
Y1 - 2009
N2 - In this paper, we have developed a novel unified approach to deal with arbitrary transmitted power constraints for designing jointly the MMSE precoders and decoders in uplink multiuser MIMO systems. This work is an extension of the first iterative approach developed by Serbetli and Yener [5] for per-user power constraint. An explicit expression relating Lagrange multipliers with the per-user constraint can be obtained using the proposed approach to mitigate the time consuming root searching for the Lagrange multipliers in [5]. Moreover, the explicit expression allows the MMSE solution subject to arbitrary transmit power constraints including the practical per-antenna power and peak power constraints. It is shown in some two-user numerical examples that the raw BER performance obtained from perantenna power constraint is similar to that of the per-user power constraint and is 1-2.5 dB better than that of the peak power constraint.
AB - In this paper, we have developed a novel unified approach to deal with arbitrary transmitted power constraints for designing jointly the MMSE precoders and decoders in uplink multiuser MIMO systems. This work is an extension of the first iterative approach developed by Serbetli and Yener [5] for per-user power constraint. An explicit expression relating Lagrange multipliers with the per-user constraint can be obtained using the proposed approach to mitigate the time consuming root searching for the Lagrange multipliers in [5]. Moreover, the explicit expression allows the MMSE solution subject to arbitrary transmit power constraints including the practical per-antenna power and peak power constraints. It is shown in some two-user numerical examples that the raw BER performance obtained from perantenna power constraint is similar to that of the per-user power constraint and is 1-2.5 dB better than that of the peak power constraint.
KW - Joint MMSE precoder and decoder
KW - Per-antenna power constraint
KW - Uplink multiuser MIMO
UR - http://www.scopus.com/inward/record.url?scp=77951477008&partnerID=8YFLogxK
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U2 - 10.1109/VETECF.2009.5378982
DO - 10.1109/VETECF.2009.5378982
M3 - Conference contribution
AN - SCOPUS:77951477008
SN - 9781424425150
T3 - IEEE Vehicular Technology Conference
BT - Proceedings of the 2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall
T2 - 2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall
Y2 - 20 September 2009 through 23 September 2009
ER -