期刊
IEEE SYSTEMS JOURNAL
卷 13, 期 1, 页码 30-41出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSYST.2018.2793903
关键词
Distributed antenna systems; energy harvesting; simultaneous wireless information and power transmission
类别
资金
- National Nature Science Foundation of China [61571402, 61601516, 61701214]
- Young Natural Science Foundation of Jiangxi Province [20171BAB212002]
- China Postdoctoral Science Foundation [2017M610400]
- Postdoctoral Science Foundation of Jiangxi Province [2017KY04]
- National Research Foundation through the Ministry of Science, ICT, and Future Planning, Korean Government [2017R1A2B3012316]
In this paper, we investigate a multiuser distributed antenna system with simultaneous wireless information and power transmission under the assumption of imperfect channel state information (CSI). In this system, a distributed antenna port with multiple antennas supports a set of mobile stations that can decode information and harvest energy simultaneously via a power splitter. To design robust transmit beamforming vectors and the power splitting factors in the presence of CSI errors, we maximize the average worst-case signal-to-interference-plus-noise ratio (SINR) while achieving an individual energy harvesting constraint for each mobile station. First, we develop an efficient algorithm to convert themax-min SINR problem to a set of dual min-max power balancing problems. Then, motivated by the penalty function method, an iterative algorithm based on semidefinite programming is proposed to achieve a local optimal rank-one solution. Also, to reduce the computational complexity, we present another iterative scheme based on the Lagrangian method and the successive convex approximation technique to yield a suboptimal solution. Simulation results are shown to validate the robustness and effectiveness of the proposed algorithms.
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