Research Article
Hybrid Beamforming Design for Multi-User Multi-Stream Communications with Terahertz Massive MIMO
@INPROCEEDINGS{10.1007/978-3-031-34851-8_5, author={Ziwei Wan and Tong Qin and Zhen Gao and Chun Hu and Yuezu Lv and Tuan Li and Chunli Zhu and Jiening Mao}, title={Hybrid Beamforming Design for Multi-User Multi-Stream Communications with Terahertz Massive MIMO}, proceedings={Wireless and Satellite Systems. 13th EAI International Conference, WiSATS 2022, Virtual Event, Singapore, March 12-13, 2023, Proceedings}, proceedings_a={WISATS}, year={2023}, month={6}, keywords={Terahertz (THz) Hybrid beamforming (HBF) Massive MIMO Multi-user MIMO}, doi={10.1007/978-3-031-34851-8_5} }- Ziwei Wan
Tong Qin
Zhen Gao
Chun Hu
Yuezu Lv
Tuan Li
Chunli Zhu
Jiening Mao
Year: 2023
Hybrid Beamforming Design for Multi-User Multi-Stream Communications with Terahertz Massive MIMO
WISATS
Springer
DOI: 10.1007/978-3-031-34851-8_5
Abstract
The hybrid beamforming (HBF) design for terahertz (THz) massive multiple-input multiple-output (mMIMO) communications is an essential but challenging problem in future wireless communications. In this paper, we propose an efficient HBF design framework for downlink multi-user multi-stream transmission in broadband THz mMIMO systems. First, the analytic solutions for digital precoder are derived to minimize the sum-mean-square error between the transmitted and received symbols. Then, we propose a tractable criterion for the codebook-based fully-connected analog precoder design, and further extend it to the case where the dynamic partially-connected structure is considered. A low-complexity energy-based greedy antenna grouping scheme is proposed for the dynamic hybrid structure. Simulation results demonstrate the effectiveness and the superiority of the proposed scheme in terms of sum rate and bit error rate over its counterparts.
