2018
DOI: 10.1109/jiot.2018.2799848
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Cooperative Ambient Backscatter Communications for Green Internet-of-Things

Abstract: Ambient backscatter communication (AmBC) enables a passive backscatter device to transmit information to a reader using ambient RF signals, and has emerged as a promising solution to green Internet-of-Things (IoT). Conventional AmBC receivers are interested in recovering the information from the ambient backscatter device (A-BD) only. In this paper, we propose a cooperative AmBC (CABC) system in which the reader recovers information not only from the A-BD, but also from the RF source. We first establish the sy… Show more

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Cited by 353 publications
(229 citation statements)
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“…The BTx then reflects the modulated RF signals to the CRx. The CRx, which can be a typical cellular terminal [4], is equipped with N antennas. It receives both the information directly from the RF source and the information from the BTx through backscattering.…”
Section: System Modelmentioning
confidence: 99%
See 1 more Smart Citation
“…The BTx then reflects the modulated RF signals to the CRx. The CRx, which can be a typical cellular terminal [4], is equipped with N antennas. It receives both the information directly from the RF source and the information from the BTx through backscattering.…”
Section: System Modelmentioning
confidence: 99%
“…The operation of frequency shift, however, imposes higher requirements on device hardware. Alternatively, multi-antenna receiver with maximum likelihood detectors and successive interference cancellation (SIC)based detectors was considered in [4] for cooperative ambient backscatter systems.…”
mentioning
confidence: 99%
“…Substituting the lower bound (27) and (29) into problem (26) and introducing slack variables {z(i)} to replace q(i) −q(i − 1) in constraint (25c), we have the following optimization problem…”
Section: Fly-and-hover Schemementioning
confidence: 99%
“…The closed-form expressions are derived using the union bounding technique. For convenience, we assume that the tag and RF source adopt binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) modulation [8], [10], respectively. However, the analysis is compatible with other modulation schemes.…”
Section: Optimal Detector and Performance Analysismentioning
confidence: 99%