Low-power backscatter relay network

Munir, Daniyal; Shah, Syed Tariq; Lee, Won Jin; Chung, Min Young

doi:10.1145/3022227.3022278

Cited by 8 publications

(9 citation statements)

References 12 publications

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“…In [167], the authors introduce a relaying technique for fullduplex backscatter devices [136] to extend the communication ranges. Specifically, the authors assume a model in which a source backscatter transmitter, i.e., ST , wants to transmit data to a destination backscatter transmitter, i.e., DT s , but the channel conditions between ST and DT s are not feasible for the transmission.…”

Section: Reader Tagmentioning

confidence: 99%

Ambient Backscatter Communications: A Contemporary Survey

Huynh

Hoang

et al. 2018

IEEE Commun. Surv. Tutorials

635

382

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Recently, ambient backscatter communications 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. It is expected to realize numerous Internet-of-Things (IoT) 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.Index Terms-Ambient backscatter, wireless networks, bistatic backscatter, RFID, wireless energy harvesting, backscatter communications, and passive communications.

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Section: Reader Tagmentioning

confidence: 99%

Ambient Backscatter Communications: A Contemporary Survey

Huynh

Hoang

et al. 2018

IEEE Commun. Surv. Tutorials

635

382

View full text Add to dashboard Cite

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“…A full-duplex scheme for Amb-BackCom devices is considered to relay the information [93]. The relay node can send its information, while receiving signals from the source node.…”

Section: Backcom Communication Modesmentioning

confidence: 99%

“…Full-duplex mode of BackCom is used in multiple access [77], in-band communication [78], H-AP [92], relaying [93], and feedback channels [94].…”

Section: Half-duplex Backcommentioning

confidence: 99%

“…The simultaneous transmission and reception are supported in full-duplex mode. This enables the concurrent reception of energy while transmitting data [93]. Moreover, this feature of simultaneous transmissions and reception enhances the data rate compared to the half-duplex mode.…”

mentioning

confidence: 99%

“…The energy consumption of BackCom devices is in micro-watts [8,32]. This small amount of power can be extracted from surrounding (ambient) radio waves [12], such as WiFi signals [37], cellphone signals [125] and TV signals [93].…”

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confidence: 99%

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Backscatter Communications: Inception of the Battery-Free Era—A Comprehensive Survey

Memon

Saxena

Roy³

et al. 2019

Electronics

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The ever increasing proliferation of wireless objects and consistent connectivity demands are creating significant challenges for battery-constrained wireless devices. The vision of massive IoT, involving billions of smart objects to be connected to the cellular network, needs to address the problem of uninterrupted power consumption while taking advantage of emerging high-frequency 5G communications. The problem of limited battery power motivates us to utilize radio frequency (RF) signals as the energy source for battery-free communications in next-generation wireless networks. Backscatter communication (BackCom) makes it possible to harvest energy from incident RF signals and reflect back parts of the same signals while modulating the data. Ambient BackCom (Amb-BackCom) is a type of BackCom that can harvest energy from nearby WiFi, TV, and cellular RF signals to modulate information. The objective of this article is to review BackCom as a solution to the limited battery life problem and enable future battery-free communications for combating the energy issues for devices in emerging wireless networks. We first highlight the energy constraint in existing wireless communications. We then investigate BackCom as a practical solution to the limited battery life problem. Subsequently, in order to take the advantages of omnipresent radio waves, we elaborate BackCom tag architecture and various types of BackCom. To understand encoding and data extraction, we demonstrate signal processing aspects that cover channel coding, interference, decoding, and signal detection schemes. Moreover, we also describe BackCom communication modes, modulation schemes, and multiple access techniques to accommodate maximum users with high throughput. Similarly, to mitigate the increased network energy, adequate data and power transfer schemes for BackCom are elaborated, in addition to reliability, security, and range extension. Finally, we highlight BackCom applications with existing research challenges and future directions for next-generation 5G wireless networks.

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