TY - GEN
T1 - Interference Exploitation MU-MISO Precoding Under Per-Antenna Power Constraint
AU - Wen, Yunsi
AU - Wang, Haonan
AU - Li, Ang
AU - Liao, Xuewen
AU - Masouros, Christos
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This paper studies the constructive interference (CI) precoding under per-antenna power constraint (PAPC) in the downlink of multi-user multiple-input single-output (MU-MISO) systems. The scenario of PAPC is more practical than that under sum power constraint (SPC) in actual systems. In this paper, we extend the mathematical precoding structure analysis of CI precoding under SPC to PAPC. By analyzing the formulated optimization problem with KKT conditions and generalized matrix inverse theory, we obtain the closed-form structure of the CI-PAPC precoder as a function of introduced variables and simplify the problem. Then, the primal-dual interior point method (IPM) is employed to solve this simplified problem more efficiently. Simulation results verify our mathematical derivations and show that the proposed method enjoys much lower complexity while maintaining the same communication performance, which promotes the practical implementation of CI precoding in realistic scenarios.
AB - This paper studies the constructive interference (CI) precoding under per-antenna power constraint (PAPC) in the downlink of multi-user multiple-input single-output (MU-MISO) systems. The scenario of PAPC is more practical than that under sum power constraint (SPC) in actual systems. In this paper, we extend the mathematical precoding structure analysis of CI precoding under SPC to PAPC. By analyzing the formulated optimization problem with KKT conditions and generalized matrix inverse theory, we obtain the closed-form structure of the CI-PAPC precoder as a function of introduced variables and simplify the problem. Then, the primal-dual interior point method (IPM) is employed to solve this simplified problem more efficiently. Simulation results verify our mathematical derivations and show that the proposed method enjoys much lower complexity while maintaining the same communication performance, which promotes the practical implementation of CI precoding in realistic scenarios.
KW - MIMO
KW - closed-form solutions
KW - constructive interference
KW - per-antenna power constraint
KW - primal-dual IPM
UR - https://www.scopus.com/pages/publications/85178604827
U2 - 10.1109/SPAWC53906.2023.10304453
DO - 10.1109/SPAWC53906.2023.10304453
M3 - 会议稿件
AN - SCOPUS:85178604827
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
SP - 111
EP - 115
BT - 2023 IEEE 24th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 24th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2023
Y2 - 25 September 2023 through 28 September 2023
ER -