Results 21 to 30 of about 478 (164)

Noncoherent Detection for Ambient Backscatter Communications Over OFDM Signals

open access: yesIEEE Access, 2019
Backscattering communications have been recently proposed as an effective enabling technology for massive Internet of Things (IoT) development. A novel application of backscattering, called ambient backscattering (AmBC), has been gaining much attention ...
Donatella Darsena
doaj   +1 more source

Performance analysis of wireless-powered cognitive radio networks with ambient backscatter

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
Ambient backscatter is a promising wireless communication technique where low-power users communicate with each other without any dedicated power source.
Daniyal Munir   +4 more
doaj   +1 more source

Control of Electromagnetic Radiation on Coexisting Smart Radio Environment

open access: yesIEEE Open Journal of the Communications Society, 2022
Efficient spectrum utilization is always the fundamental challenge of mobile communication technology toward 6G. Instead of conventional spectral efficiency in bps/Hz, geographical region shall be brought into consideration in bps/Hz/unit-area, which ...
Mehmet Mert Sahin   +2 more
doaj   +1 more source

Time- and Power-Splitting Strategies for Ambient Backscatter System

open access: yesIEEE Access, 2019
An ambient backscatter system could utilize the exiting ambient RF signals as both energy source and information carrier to enable the communications among battery-free devices and is deemed as a promising communication primitive for the Internet of ...
Zhe Ma   +6 more
doaj   +1 more source

Smart all-time vision: The battery-free video communication for urban administration and law enforcement

open access: yesDigital Communications and Networks, 2023
The Chinese government is dedicated to enhancing the level of informatization in administrative law enforcement to ensure fairness and increase credibility.
Yajie He   +7 more
doaj   +1 more source

DDPG-Based Throughput Optimization with AoI Constraint in Ambient Backscatter-Assisted Overlay CRN

open access: yesSensors, 2022
The combination of ambient backscatter (AB) communications (ABCs) and RF-powered cognitive radio networks (CRNs) deals with challenges of both energy supply and spectrum shortage, and improves the network performances.
Xueli Jia   +3 more
doaj   +1 more source

Noncoherent Backscatter Communications Over Ambient OFDM Signals

open access: yesIEEE Transactions on Communications, 2019
In recent years, ambient backscatter communications have gained a lot of interests as a promising enabling technology for the Internet-of-Things and green communications. In ambient backscatter communication systems, ultra-low power devices are able to transmit information by backscattering ambient radio-frequency signals generated by legacy ...
ElMossallamy, Mohamed A.   +6 more
openaire   +2 more sources

Ambient backscatter communications over NOMA downlink channels [PDF]

open access: yesChina Communications, 2020
In this paper, we investigate the performance of commensal ambient back-scatter communications (AmBC) that ride on a non-orthogonal multiple access (NOMA) downlink transmission, in which a backscatter device (BD) splits part of its received signals from the base station (BS) for energy harvesting, and backscatters the remaining received signals to ...
Chen, Weiyu   +5 more
openaire   +2 more sources

6G and Beyond: The Future of Wireless Communications Systems

open access: yesIEEE Access, 2020
6G and beyond will fulfill the requirements of a fully connected world and provide ubiquitous wireless connectivity for all. Transformative solutions are expected to drive the surge for accommodating a rapidly growing number of intelligent devices and ...
Ian F. Akyildiz, Ahan Kak, Shuai Nie
doaj   +1 more source

Backscatter technologies and the future of Internet of Things: Challenges and opportunities

open access: yesIntelligent and Converged Networks, 2020
Energy source and circuit cost are two critical challenges for the future development of the Internet of Things (IoT). Backscatter communications offer a potential solution to conveniently obtain power and reduce cost for sensors in IoT, and researchers ...
Chaochao Yao   +4 more
doaj   +1 more source

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