期刊
IEEE COMMUNICATIONS SURVEYS AND TUTORIALS
卷 20, 期 4, 页码 3169-3219出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/COMST.2018.2860778
关键词
RF signals; wireless energy transfer (WET); wireless information transfer (WIT); simultaneous wireless information and power transfer (SWIPT); wireless powered communication networks (WPCNs); integrated data and energy communication networks (IDENs)
资金
- National Natural Science Foundation of China [61601097, U1705263, 61620106011]
- Fundamental Research Funds for the Central Universities [ZYGX2016Z011]
- EPSRC [EP/Noo4558/1, EP/PO34284/1]
- European Research Council's Advanced Fellow Grant QuantCom
- Huawei Innovation Research Program
- 111 Project [B14039]
- Engineering and Physical Sciences Research Council [EP/N004558/1] Funding Source: researchfish
- EPSRC [EP/N004558/1] Funding Source: UKRI
In order to satisfy the power thirst of communication devices in the imminent fifth generation era, wireless charging techniques have attracted much attention both from the academic and industrial communities. Although the inductive coupling and magnetic resonance-based charging techniques are indeed capable of supplying energy in a wireless manner, they tend to restrict the freedom of movement. By contrast, radio frequency (RF) signals are capable of supplying energy over distances, which are gradually inclining closer to our ultimate goal-charging anytime and anywhere. Furthermore, transmitters capable of emitting RF signals have been widely deployed, such as TV towers, cellular base stations, and Wi-Fi access points. This communication infrastructure may indeed be employed also for wireless energy transfer (WET). Therefore, no extra investment in dedicated WET infrastructure is required. However, allowing RF signal-based WET may impair the wireless information transfer (WIT) operating in the same spectrum. Hence, it is crucial to coordinate and balance WET and WIT for simultaneous wireless information and power transfer, which evolves to integrated data and energy communication networks (IDENs). To this end, a ubiquitous IDEN architecture is introduced by summarizing its natural heterogeneity and by synthesizing a diverse range of integrated WET and WIT scenarios. Then the inherent relationship between WET and WIT is revealed from an information theoretical perspective, which is followed by the critical appraisal of the hardware enabling techniques extracting energy from RF signals. Furthermore, the transceiver design, resource allocation, and user scheduling as well as networking aspects are elaborated on. In a nutshell, this treatise can be used as a handbook for researchers and engineers, who are interested in enriching their knowledge base of IDENs and in putting this vision into practice.
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