中国科学院深圳先进技术研究院机构知识库(SIAT OpenIR): Robust Relay Beamforming in Device-to-Device Networks with Energy Harvesting Constraints
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Robust Relay Beamforming in Device-to-Device Networks with Energy Harvesting Constraints
Shimin Gong; Yanyan Shen; Xiaoxia Huang; Sissi Xiaoxiao Wu; Anthony Man-ChoSo
2016
Conference NameIEEE Global Communication Conference: Wireless Communications- Wireless Communications
Conference Place美国纽约
AbstractMotivated by the observation that energy harvesting(EH) from radio-frequency (RF) signal is subject to fluctuations,multiple EH-enabled relays are employed to collaboratively enhance data communications in a device-to-device (D2D) network underlying a cellular system. Each relay is equipped with a single antenna and unable to harvest energy and transmit data simultaneously. Thus, the D2D user equipment (DUE) needs to optimally schedule the channel time for the relays’ EH and data transmissions, which depends on their EH capabilities and channel conditions. Considering that the relays’ channel estimations are usually unreliable, we formulate a robust throughput maximization problem to optimize the relays’ EH time and transmit power, subject to a probabilistic interference constraint at the cellular user equipment (CUE). We show that the proposed problem, though non-convex, can be tackled by exploiting its monotonicity structure. Specifically, we design a successive approximation algorithm that involves solving a sequence of semidefinite programs (SDPs) and show numerically that it always achieves the global optimum. This validates our analysis and demonstrates the efficacy of the proposed algorithm.
Department实时中心
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://ir.siat.ac.cn/handle/172644/10302
Collection数字所
Affiliation2016
Recommended Citation
GB/T 7714
Shimin Gong,Yanyan Shen,Xiaoxia Huang,et al. Robust Relay Beamforming in Device-to-Device Networks with Energy Harvesting Constraints[C],2016.
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