TY - GEN
T1 - An Efficient Learning Algorithm for Phase Shift Optimization in RIS-Aided MISO Wireless Systems
AU - Tian, Jiawen
AU - Guan, Wenwen
AU - Li, Xiao
AU - Tsiftsis, Theodoros A.
AU - Liu, Hongwu
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Due to dynamic change of the wireless environment, devising the local phase shift matrix for reconfigurable intelligent surface (RIS) can be a thought-provoking task. Therefore, in this paper, we come up with a deep reinforcement learning (DRL)-based beamforming optimization algorithm for RIS-aided multiple-input single-output communication systems. To be precise, we exploit a DRL-based structure based on twin-delayed-deep-deterministic-policy-gradient (TD3) algorithm to automatically adjust the phase shift of each unit at RIS to maximize the downlink received signal-to-noise ratio (SNR). Simulation results show that the raised TD3 algorithm performs a higher received SNR than the conventional DRL algorithm with a reduced running time.
AB - Due to dynamic change of the wireless environment, devising the local phase shift matrix for reconfigurable intelligent surface (RIS) can be a thought-provoking task. Therefore, in this paper, we come up with a deep reinforcement learning (DRL)-based beamforming optimization algorithm for RIS-aided multiple-input single-output communication systems. To be precise, we exploit a DRL-based structure based on twin-delayed-deep-deterministic-policy-gradient (TD3) algorithm to automatically adjust the phase shift of each unit at RIS to maximize the downlink received signal-to-noise ratio (SNR). Simulation results show that the raised TD3 algorithm performs a higher received SNR than the conventional DRL algorithm with a reduced running time.
KW - Deep reinforcement learning (DRL)
KW - passive phase shift design
KW - reconfigurable intelligent surface (RIS)
KW - TD3 algorithm
UR - https://www.scopus.com/pages/publications/85185782754
U2 - 10.1109/WCSP58612.2023.10404084
DO - 10.1109/WCSP58612.2023.10404084
M3 - Conference contribution
AN - SCOPUS:85185782754
T3 - 2023 IEEE 15th International Conference on Wireless Communications and Signal Processing, WCSP 2023
SP - 1014
EP - 1019
BT - 2023 IEEE 15th International Conference on Wireless Communications and Signal Processing, WCSP 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th IEEE International Conference on Wireless Communications and Signal Processing, WCSP 2023
Y2 - 2 November 2023 through 4 November 2023
ER -