Results 51 to 60 of about 1,149,379 (214)

Investigation of Characteristics of Ultraviolet Light Pulse Weak Signal Communication System Based on Fourth-Order Frequency-Shift Keying Modulation

Photonics
In ultraviolet (UV) communication, On–Off Keying (OOK) is the primary modulation technique. Compared to OOK, frequency modulation offers stronger resistance to path attenuation.
Yingkai Zhao, Axin Du, Yu Jiao, Li Kuang, Jiawen Chen, Ning Sun, Jianguo Liu   +6 more
doaj   +1 more source

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, Volume 36, Issue 25, 26 March 2026.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

Performance Analysis of CA‐Polar Code for 5G‐IoT Low Power Wide Area Networks

Internet Technology Letters, Volume 9, Issue 2, March/April 2026.
ABSTRACT CRC‐Aided Polar (CA‐Polar) codes are the standardized channel coding scheme for control channels of 5G eMBB service class due to their capacity achieving performance. This work aims to assess the compatibility and scalability of CA‐Polar codes toward low power IoT applications coming under the domain of LPWAN.
Abhilasha Gautam, Prabhat Thakur, Ghanshyam Singh   +2 more
wiley   +1 more source

Aphid parasitism alters induced plant responses allowing a hyperparasitoid to locate its hidden parasitoid host

New Phytologist, Volume 249, Issue 4, Page 2055-2070, February 2026.
Summary Plants typically host insect communities composed of multiple trophic levels that are intricately linked through interactions mediated by the shared food plant. Hyperparasitoids are top‐level carnivores in such systems, preying on parasitoid larvae developing inside herbivores. These hyperparasitoids can dramatically reduce the effectiveness of
Mitchel E. Bourne, Alessia Vitiello, Gabriel A. Charvalakis, Leandra Meerkerk, Berhane T. Weldegergis, Karen J. Kloth, Erik H. Poelman   +6 more
wiley   +1 more source

Demonstration of 3D‐Printed Optical Antennas for High‐Speed Optical Wireless Communication Using Market‐Ready Materials

Advanced Materials Technologies, Volume 11, Issue 1, 8 January 2026.
The feasibility of 3D‐printed optical antennas using commercial, non‐optical materials for Optical Wireless Communications (OWC) is demonstrated. This study combines spectral analysis, anisotropy effects, and telecom‐relevant optical measurements, revealing promising performance and novel insights for low‐cost, customizable photonic components in ...
Mauro Aresti, Marco Meucci, Paolo Foggi, Caterina Credi, Satoshi Iketani, Cristiana Lofrumento, Jacopo Catani   +6 more
wiley   +1 more source

Utilizing Single Lightwave for Delivering Baseband/FSO/MMW Traffics Simultaneously in PON Architecture

IEEE Access, 2019
In this work, we demonstrate an integrated optical baseband, free space optical (FSO) communication and millimeter-wave (MMW) traffics through the present passive optical network (PON) architecture by utilizing single wavelength for broadcasting triple ...
Chien-Hung Yeh, Wen-Piao Lin, Chien-Ming Luo, Yue-Ru Xie, Yao-Jen Chang, Chi-Wai Chow   +5 more
doaj   +1 more source

Ultrasound‐Powered, Battery‐Free Implants via Triboelectric Energy Harvesting

Advanced Materials Technologies, Volume 11, Issue 2, 22 January 2026.
Ultrasound‐driven triboelectric nanogenerators (US‐TENGs) present a promising approach to battery‐free implants by combining body‐safe ultrasound with the material and structural versatility of TENGs. This review categorizes current US‐TENG research into long‐term and transient short‐term applications and discusses key challenges in materials, device ...
Youngwook Chung, Saswat Choudhury, Young‐Jun Kim, In‐Yong Suh, Keren Dai, Sang‐Woo Kim   +5 more
wiley   +1 more source

Deep Reinforcement Learning‐Enabled QoS‐Aware Adaptive Modulation for Visible Light‐Infrared Communication Systems

IET Communications, Volume 20, Issue 1, January/December 2026.
To address the challenges of channel sensitivity and reliability in aircraft cabin environments, this paper proposes a reinforcement learning‐assisted bidirectional communication system utilizing visible light for the downlink and infrared for the uplink. By combining an improved, resource‐efficient LMMSE algorithm for channel estimation with RL‐driven
Lei Xiao, Quanyi Cheng, Baolin Lai, Xiaodong Liu, BuGao Liu, Junyi Du   +5 more
wiley   +1 more source

MAC Protocol Design for Optical Wireless Body‐Area Networks: Latency, Energy Efficiency and Scalability Analysis

IET Networks, Volume 15, Issue 1, January/December 2026.
This work investigates suitable MAC protocols for medical optical wireless body‐area networks (WBANs), focussing on multiple access management. Using realistic channel models, we evaluate the network performance in terms of energy efficiency, quality‐of‐service and scalability for different IEEE protocols, for both intra‐ and extra‐WBAN connectivity in
Christos Giachoudis, Mohammad‐Ali Khalighi, Stanislav Zvanovec, Vasilis K. Papanikolaou, Sotiris A. Tegos, George K. Karagiannidis   +5 more
wiley   +1 more source

Mid‐Infrared Free‐Space Optical Communications: Technologies, Demonstrations and Future Directions

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
Free‐space optical (FSO) communication is increasingly extending beyond the near‐infrared to the mid‐wave infrared (MWIR) and long‐wave infrared (LWIR) regions, which offer reduced turbulence, scattering and absorption for more robust links. This review summarises recent advances in MWIR/LWIR FSO technologies, including quantum cascade lasers, lithium ...
Darja Cirjulina, Zhuoyan Zhang, Abdul Hayee, Armands Ostrovskis, Richard Schatz, Hamza Dely, Yan‐Ting Sun, Toms Salgals, Sandis Spolitis, Vjaceslavs Bobrovs, Lu Zhang, Djamal Gacemi, Angela Vasanelli, Carlo Sirtori, Xianbin Yu, Oskars Ozolins, Xiaodan Pang   +16 more
wiley   +1 more source