Journal
IEEE COMMUNICATIONS SURVEYS AND TUTORIALS
Volume 20, Issue 4, Pages 2889-2922Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/COMST.2018.2841964
Keywords
Ambient backscatter; IoT networks; bistatic backscatter; RFID; wireless energy harvesting; backscatter communications; and low-power communications
Funding
- Singapore MOE [2017-T1-002-007 RG122/17, MOE2014-T2-2-015 ARC4/15, NRF2015-NRF-ISF001-2277]
- EMA Energy Resilience [NRF2017EWT-EP003-041]
- National Research Foundation of Korea - Korean Government [2014R1A5A1011478]
- WASP/NTU [M4082187 (4080)]
- National Research Foundation of Korea [2014R1A5A1011478] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Recently, ambient backscatter communication has been introduced as a cutting-edge technology which enables smart devices to communicate by utilizing ambient radio frequency (RF) signals without requiring active RF transmission. This technology is especially effective in addressing communication and energy efficiency problems for low-power communications systems such as sensor networks, and thus it is expected to realize numerous Internet-of-Things applications. Therefore, this paper aims to provide a contemporary and comprehensive literature review on fundamentals, applications, challenges, and research efforts/progress of ambient backscatter communications. In particular, we first present fundamentals of backscatter communications and briefly review bistatic backscatter communications systems. Then, the general architecture, advantages, and solutions to address existing issues and limitations of ambient backscatter communications systems are discussed. Additionally, emerging applications of ambient backscatter communications are highlighted. Finally, we outline some open issues and future research directions.
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