Results 31 to 40 of about 8,940 (185)
Airborne observations of the Eyjafjalla volcano ash cloud over Europe during air space closure in April and May 2010 [PDF]
, 2011 © Author(s) 2011. This work is distributed under the Creative Commons Attribution 3.0 LicenseAirborne lidar and in-situ measurements of aerosols and trace gases were performed in volcanic ash plumes over Europe between Southern Germany and Iceland with ...
Ansmann, A. +37 more
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Signal Detection Scheme in Ambient Backscatter System With Multiple Antennas
IEEE Access, 2017 The ambient backscatter technique is a communication technology that uses ambient radio frequency signals to enable battery-free devices to communicate with other device.
Chang-Hee Kang +3 more
doaj +1 more source
Sensors, 2022 Internet of Things applications based on backscatter radio principles have appeared to address the limitations of high cost and high power consumption. While radio-frequency identification (RFID) sensor nodes are among the most commonly utilized state-of-
Spyridon Nektarios Daskalakis +4 more
doaj +1 more source
Hybrid Ambient Backscatter Communication Systems With Harvest-Then-Transmit Protocols
IEEE Access, 2018 In this paper, we investigate and analyze a hybrid ambient backscatter (AmBack) scheme with harvest-then-transmit protocols. In this scheme, the whole transmission is divided into three phases (time slots): energy harvesting (EH), AmBack, and data ...
Dong Li, Wei Peng, Ying-Chang Liang
doaj +1 more source
Stackelberg Game for Distributed Time Scheduling in RF-Powered Backscatter Cognitive Radio Networks [PDF]
, 2018 In this paper, we study the transmission strategy adaptation problem in an RF-powered cognitive radio network, in which hybrid secondary users are able to switch between the harvest-then-transmit mode and the ambient backscatter mode for their ...
Hoang, Dinh Thai +4 more
core +1 more source
ICT Express, 2023 This paper considers an Intelligent Reconfigurable Surface (IRS)-enhanced Ambient Backscatter Communication (AmBC)-enabled Wireless Body Area Network (WBAN) system.
Xu Zhao, Weilin Zang, Ye Li
doaj +1 more source
Simultaneous harvest-and-transmit ambient backscatter communications under Rayleigh fading
EURASIP Journal on Wireless Communications and Networking, 2019 Ambient backscatter communications is an emerging paradigm and a key enabler for pervasive connectivity of low-powered wireless devices. It is primarily beneficial in the Internet of things (IoT) and the situations where computing and connectivity ...
Furqan Jameel +3 more
doaj +1 more source
Noncoherent Backscatter Communications Over Ambient OFDM Signals
IEEE 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
Multi-Dimensional Sparse-Coded Ambient Backscatter Communication for Massive IoT Networks
Energies, 2018 In this paper, we propose a multi-dimensional sparse-coded ambient backscatter communication (MSC-AmBC) system for long-range and high-rate massive Internet of things (IoT) networks.
Tae Yeong Kim, Dong In Kim
doaj +1 more source
Ambient backscatter communications over NOMA downlink channels [PDF]
China 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