Joint hybrid beamforming and power splitting design in millimeter-wave simultaneous wireless information and power transfer system

doi:10.19682/j.cnki.1005-8885.2019.1007

中国邮电高校学报(英文) ›› 2019, Vol. 26 ›› Issue (2): 59-66.doi: 10.19682/j.cnki.1005-8885.2019.1007

Joint hybrid beamforming and power splitting design in millimeter-wave simultaneous wireless information and power transfer system

Bao Tiantian, Wen Xiangming, Lu Zhaoming, Chen Yawen, Zheng Wei

School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China
Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China

收稿日期:2017-12-13 修回日期:2019-03-29 出版日期:2019-04-30 发布日期:2019-06-14
通讯作者: Corresponding author: Bao Tiantian, E-mail: irene625@bupt.edu.cn E-mail:irene625@bupt.edu.cn
作者简介:Corresponding author: Bao Tiantian, E-mail: irene625@bupt.edu.cn
基金资助:
This work was supported by the National Natural Science Foundation of China (61671073).

Joint hybrid beamforming and power splitting design in millimeter-wave simultaneous wireless information and power transfer system

Bao Tiantian, Wen Xiangming, Lu Zhaoming, Chen Yawen, Zheng Wei

School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China
Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2017-12-13 Revised:2019-03-29 Online:2019-04-30 Published:2019-06-14
Contact: Corresponding author: Bao Tiantian, E-mail: irene625@bupt.edu.cn E-mail:irene625@bupt.edu.cn
About author:Corresponding author: Bao Tiantian, E-mail: irene625@bupt.edu.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (61671073).

摘要/Abstract

摘要： A joint hybrid beamforming and power splitting (JHBPS) design problem for simultaneous wireless information and power transfer (SWIPT) in millimeter-wave (mmWave) system is studied. The considered scenario is a multi-antenna base station (BS) transfers information and energy simultaneously to multiple single-antenna receivers. BS adopts hybrid digital and analog beamforming architecture to reduce hardware costs. Receivers separate acquired signals with power splitters either for information decoding (ID) or energy harvesting (EH). The aim is minimizing total transmission power by joint design of hybrid beamforming and PS under ID and EH requirements. It is difficult to obtain the optimal hybrid beamformer directly since the analog beamformer and digital beamformer are
multiplied. Therefore, a two-stage algorithm is proposed to solve the problem. In the first stage, the optimal beamformer and PS ratios are obtained by solving the joint transmission beamforming and PS design problem. In the second stage, the optimal beamformer is approximated with the product of analog beamformer and digital beamformer. The superiority of proposed algorithm over the existing algorithms is demonstrated through simulations. Moreover, the effectiveness of approximation algorithm is testified.

关键词: SWIPT, mmWave, hybrid analog and digital beamforming

Abstract: A joint hybrid beamforming and power splitting (JHBPS) design problem for simultaneous wireless information and power transfer (SWIPT) in millimeter-wave (mmWave) system is studied. The considered scenario is a multi-antenna base station (BS) transfers information and energy simultaneously to multiple single-antenna receivers. BS adopts hybrid digital and analog beamforming architecture to reduce hardware costs. Receivers separate acquired signals with power splitters either for information decoding (ID) or energy harvesting (EH). The aim is minimizing total transmission power by joint design of hybrid beamforming and PS under ID and EH requirements. It is difficult to obtain the optimal hybrid beamformer directly since the analog beamformer and digital beamformer are
multiplied. Therefore, a two-stage algorithm is proposed to solve the problem. In the first stage, the optimal beamformer and PS ratios are obtained by solving the joint transmission beamforming and PS design problem. In the second stage, the optimal beamformer is approximated with the product of analog beamformer and digital beamformer. The superiority of proposed algorithm over the existing algorithms is demonstrated through simulations. Moreover, the effectiveness of approximation algorithm is testified.

Key words: SWIPT, mmWave, hybrid analog and digital beamforming

中图分类号:

TN928

Bao Tiantian, Wen Xiangming, Lu Zhaoming, Chen Yawen, Zheng Wei. Joint hybrid beamforming and power splitting design in millimeter-wave simultaneous wireless information and power transfer system[J]. The Journal of China Universities of Posts and Telecommunications, 2019, 26(2): 59-66.

参考文献

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Joint hybrid beamforming and power splitting design in millimeter-wave simultaneous wireless information and power transfer system

Joint hybrid beamforming and power splitting design in millimeter-wave simultaneous wireless information and power transfer system

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