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CLC number: TN92

On-line Access: 2018-12-14

Received: 2016-05-19

Revision Accepted: 2016-11-14

Crosschecked: 2018-11-27

Cited: 0

Clicked: 3245

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Lu-lu Zhao

http://orcid.org/0000-0003-3926-2019

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Frontiers of Information Technology & Electronic Engineering  2018 Vol.19 No.11 P.1432-1443

http://doi.org/10.1631/FITEE.1601268


Optimization of a robust collaborative-relay break beamforming design for simultaneous wireless break information and power transfer


Author(s):  Lu-lu Zhao, Xing-long Jiang, Li-min Li, Guo-qiang Zeng, Hui-jie Liu

Affiliation(s):  Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; more

Corresponding email(s):   lilimin@wzu.edu.cn

Key Words:  Simultaneous wireless information and power transfer, Channel state information, Robust beamforming, Semidefinite relaxation, Iterative sub-gradient


Lu-lu Zhao, Xing-long Jiang, Li-min Li, Guo-qiang Zeng, Hui-jie Liu. Optimization of a robust collaborative-relay break beamforming design for simultaneous wireless break information and power transfer[J]. Frontiers of Information Technology & Electronic Engineering, 2018, 19(11): 1432-1443.

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Abstract: 
We investigate a collaborative-relay beamforming design for simultaneous wireless information and power transfer. A non-robust beamforming design that assumes availability of perfect channel state information (CSI) in the relay nodes is addressed. In practical scenarios, CSI errors are usually inevitable; therefore, a robust collaborative-relay beamforming design is proposed. By applying the bisection method and the semidefinite relaxation (SDR) technique, the non-convex optimization problems of both non-robust and robust beamforming designs can be solved. Moreover, the solution returned by the SDR technique may not always be rank-one; thus, an iterative sub-gradient method is presented to acquire the rank-one solution. Simulation results show that under an imperfect CSI case, the proposed robust beamforming design can obtain a better performance than the non-robust one.

无线信息与能量同时传输的鲁棒协作中继波束形成优化设计

摘要:研究了应用于无线信息与能量同时传输的协作中继波束形成设计。基于中继节点拥有理想信道状态信息的假设,提出一种非鲁棒波束形成设计。实际中信道状态信息误差通常不可避免,为此,提出一种鲁棒波束形成设计。采用二分法和半定松弛法解决非鲁棒和鲁棒波束形成设计的非凸优化问题。由于半定松弛法的解不总是秩一的,提出一种迭代次梯度法求秩一解。仿真结果表明,在非理想信道状态信息下,所提鲁棒波束形成设计性能优于非鲁棒设计。

关键词:无线信息与能量同时传输;信道状态信息;鲁棒波束形成;半定松弛;迭代次梯度

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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