TY - GEN
T1 - Robust MMSE-Based Beamforming for Massive MIMO Multi-Pair Two-Way Relay Systems with Low-Resolution ADCs/DACs
AU - Wang, Zhiqiang
AU - Wu, Yi
AU - Cai, Yunlong
AU - Wang, Jun
AU - Yue, Guangrong
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, we study the beamforming design for massive multiple-input and multiple-output (MIMO) multi-pair two-way relay system with low-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). Based on the separated minimum mean square error (MMSE) criterion, a two-stage robust MMSE (R-MMSE) algorithm is proposed. Specifically, the original beamforming design is firstly decoupled into reception (Rx) and transmission (Tx) beamforming designs. Then, the Rx and Tx beamforming are formulated as Rx-MMSE and Tx-MMSE problems respectively, which are solved to obtain the corresponding closed-form solutions. Simulation results show that the proposed R-MMSE algorithm can reduce the performance loss due to low-resolution ADCs/DACs to some extent, and outperforms conventional linear algorithms (MRC/MRT, ZFR/ZFT and MMSE), especially for massive user pairs.
AB - In this paper, we study the beamforming design for massive multiple-input and multiple-output (MIMO) multi-pair two-way relay system with low-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). Based on the separated minimum mean square error (MMSE) criterion, a two-stage robust MMSE (R-MMSE) algorithm is proposed. Specifically, the original beamforming design is firstly decoupled into reception (Rx) and transmission (Tx) beamforming designs. Then, the Rx and Tx beamforming are formulated as Rx-MMSE and Tx-MMSE problems respectively, which are solved to obtain the corresponding closed-form solutions. Simulation results show that the proposed R-MMSE algorithm can reduce the performance loss due to low-resolution ADCs/DACs to some extent, and outperforms conventional linear algorithms (MRC/MRT, ZFR/ZFT and MMSE), especially for massive user pairs.
KW - MMSE
KW - Massive MIMO
KW - beamforming
KW - low-resolution ADCs/DACs
KW - two-way relay
UR - https://www.scopus.com/pages/publications/85123361419
U2 - 10.1109/WCSP52459.2021.9613520
DO - 10.1109/WCSP52459.2021.9613520
M3 - 会议稿件
AN - SCOPUS:85123361419
T3 - 13th International Conference on Wireless Communications and Signal Processing, WCSP 2021
BT - 13th International Conference on Wireless Communications and Signal Processing, WCSP 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th International Conference on Wireless Communications and Signal Processing, WCSP 2021
Y2 - 20 October 2021 through 22 October 2021
ER -