TY - GEN
T1 - On the Optimization of Constellation Tilting for MU-MIM O Tomlinson- Harashima Precoding
AU - Liu, Yifeng
AU - Bao, Xuyan
AU - Tang, Wei
AU - Wang, Siqiang
AU - Zheng, Zhong
AU - Fei, Zesong
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Tomlinson-Harashima Precoding (THP), as an alternative algorithm of Dirty Paper Precoding (DPC), can effectively decrease transmitted power through modulo operation. To further reduce the power loss of THP, THP with constellation tilting (THP-CT) was considered by introducing different rotation angles into interfering data streams. In this paper, we propose methods to find the adequate tilting angles for the THP-CT algorithm, including per-stream serial optimization via convex optimization algorithm and global optimization via particle swarm algorithm. The simulation result shows that Block Error Rate (BLER) of these two proposed algorithms is 2-3dB better than that of the conventional THP without constellation tilting.
AB - Tomlinson-Harashima Precoding (THP), as an alternative algorithm of Dirty Paper Precoding (DPC), can effectively decrease transmitted power through modulo operation. To further reduce the power loss of THP, THP with constellation tilting (THP-CT) was considered by introducing different rotation angles into interfering data streams. In this paper, we propose methods to find the adequate tilting angles for the THP-CT algorithm, including per-stream serial optimization via convex optimization algorithm and global optimization via particle swarm algorithm. The simulation result shows that Block Error Rate (BLER) of these two proposed algorithms is 2-3dB better than that of the conventional THP without constellation tilting.
KW - Tomlinson-Harashima precoding
KW - constellation tilting
KW - particle swarm optimization
KW - power loss
UR - https://www.scopus.com/pages/publications/85152276466
U2 - 10.1109/ICCT56141.2022.10072775
DO - 10.1109/ICCT56141.2022.10072775
M3 - Conference contribution
AN - SCOPUS:85152276466
T3 - International Conference on Communication Technology Proceedings, ICCT
SP - 162
EP - 167
BT - 2022 IEEE 22nd International Conference on Communication Technology, ICCT 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 22nd IEEE International Conference on Communication Technology, ICCT 2022
Y2 - 11 November 2022 through 14 November 2022
ER -