Results 51 to 60 of about 1,318,827 (204)

Modeling and Performance Analysis of Large-Scale Backscatter Communication Networks with Directional Antennas

Sensors, 2022
Backscatter communication (BackCom) constitutes intriguing technology that enables low-power devices in transmitting signals by reflecting ambient radio frequency (RF) signals that consume ultra-low energy.
Qiu Wang, Yong Zhou
doaj   +1 more source

Wide-Angle, Multiplexed Backscatter Communications Using a Dynamic Metasurface-Backed Luneburg Lens

IEEE Access
Backscatter communications is attractive for its low power requirements due to the lack of actively radiating components; however, commonly used devices are typically limited in range and functionality.
Samuel Kim, Timothy Sleasman, Avrami Rakovsky, Ra'Id Awadallah, David B. Shrekenhamer   +4 more
doaj   +1 more source

Ion‐Exchange‐Driven Ternary Organic Neuromorphic Devices with High Efficiency and Stability

Advanced Science, EarlyView.
Spontaneous ion exchange in a ternary polymer–ionic liquid blend disrupts the phase‐separated ionic domains of the binary film and creates a more homogeneous polymer–ion environment. This ionically reorganized matrix enables stable and efficient electrochemical doping, leading to ion‐gel‐gated organic electrochemical transistors with enhanced ...
Sungmin Lee, Vivek Pratap Singh, Hyeonryul Lee, Young‐Yong Kim, Yong‐Ryun Jo, Changhoon Lee, Ji Hoon Shim, Namsoo Lim, Guanjie Wang, Junyeong Sung, Dongyeop Yang, Zhongwu Wang, Liqiang Li, Chandran Balamurugan, Sooncheol Kwon   +14 more
wiley   +1 more source

Noncoherent Detection for Ambient Backscatter Communications Over OFDM Signals

IEEE 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

Investigation of the relationship between optical auroral forms and HF radar E region backscatter [PDF]

, 2000
International audienceThe SuperDARN HF radars have been employed in the past to investigate the spectral characteristics of coherent backscatter from L-shell aligned features in the auroral E region.
Milan, S. E., N. Sato, Lester, M., H. Takizawa (7612496), Villain, J.-P., J. -p. Villain, Takizawa, H., M. Lester, N. Sato (7606136), Milan, S.E., S. E. Milan, Stephen E. Milan (7612220), J. P. Villain (7612424), J.-P. Villain, Mark Lester (6477935), Sato, N., H. Takizawa   +16 more
core   +2 more sources

Ambient backscatter communications technology for batteryless IoT

物联网学报, 2019
As one of the core enabling technologies supporting the batteryless Internet of things(IoT),ambient backscattering communication technology has the characteristics of low power consumption and low cost.Firstly,the basic concept of ambient backscattering ...
Qin TAO, Caijun ZHONG, Zhaoyang ZHANG
doaj   +2 more sources

Non-Coherent and Backscatter Communications: Enabling Ultra-Massive Connectivity in 6G Wireless Networks

IEEE Access, 2021
With the commencement of the 5th generation (5G) of wireless networks, researchers around the globe have started paying their attention to the imminent challenges that may emerge in the beyond 5G (B5G) era.
Syed Junaid Nawaz, Shree Krishna Sharma, Babar Mansoor, Mohammad N. Patwary, Noor M. Khan   +4 more
doaj   +1 more source

Pseudomagnetic fields for classical waves in two‐dimensional artificial lattices: Mechanisms and applications

InfoScience, EarlyView.
Pseudomagnetic fields make light and sound emulate charged particles in magnetic fields, enabling magnetic‐free signal processing. This Review summarizes their origins, three implementations in two‐dimensional artificial lattices, and applications in energy localization and robust transport, guiding the design of topological integrated devices ...
Shuaihu Liu, Pan Hu, Xintao He, Zhinan Zeng, Yikai Su, Lu Sun   +5 more
wiley   +1 more source

Low‐Crosstalk Silicon Photonic Switch Fabrics for AI Datacenters and High‐Capacity Optical Interconnects: Device‐Level Origins and Mitigation

Laser &Photonics Reviews, EarlyView.
Scaling silicon photonic switch fabrics for AI datacenters is fundamentally constrained by accumulated crosstalk, insertion loss, and device‐level non‐idealities. This work establishes a device‐to‐link‐to‐system framework that connects the physical origins of crosstalk to practical mitigation strategies across device, circuit, and control levels.
Peng Bao, Bohao Sun, Tianqian Zhang, Tongyun Li, Richard J. Zhang, Yue Lu, Chenxi Tan, Alan Yilun Yuan, Lingzhi Luo, Ming Luo, Jin Tao, Hanbing Li, Seb J. Savory, Wei Chu, Richard Penty, Qixiang Cheng   +15 more
wiley   +1 more source

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

EURASIP 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, Syed Tariq Shah, Kae Won Choi, Tae-Jin Lee, Min Young Chung   +4 more
doaj   +1 more source