Results 91 to 100 of about 617,901 (335)

An end fire printed monopole antenna based on electromagnetic band gap structure

Automatika, 2020
In this paper, a moderate gain monopole antenna is proposed for GSM and Wi-Max applications. The antenna structure is constructed from a traditional printed monopole on Roger substrate of 3006 family.
Yahiea Al Naiemy, Taha A. Elwi, Lajos Nagy   +2 more
doaj   +1 more source

Broadband in rural and remote areas: the impact of Scottish policy initiatives [PDF]

, 2008
The ability to participate in the Internet-based economy that is emerging requires access to broadband. However, in many countries, 'digital divides' occur, with those in geographically remote and rural areas being particularly disadvantaged.
Howick, Susan, Whalley, Jason
core  

Polarization selective ultra-broadband wavelength conversion in silicon nitride waveguides

, 2022
Arman Ayan, Florent Mazeas, Junqiu Liu, Tobias J. Kippenberg, Camille-Sophie Brès   +4 more
openalex   +1 more source

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

Advanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To, Jiachen Du, Cyril Decroze, Laure Huitema, Aurelian Crunteanu, Hang Wong   +5 more
wiley   +1 more source

An Improved Intrusion Detection Algorithm Based on GA and SVM

IEEE Access, 2018
In the era of big data, with the increasing number of audit data features, human-centered smart intrusion detection system performance is decreasing in training time and classification accuracy, and many support vector machine (SVM)-based intrusion ...
Peiying Tao, Zhe Sun, Zhixin Sun
doaj   +1 more source

Characterizing and Improving the Reliability of Broadband Internet Access

, 2017
In this paper, we empirically demonstrate the growing importance of reliability by measuring its effect on user behavior. We present an approach for broadband reliability characterization using data collected by many emerging national initiatives to ...
Bischof, Zachary S., Bustamante, Fabian E., Feamster, Nick   +2 more
core  

Trade-off between complexity and BER performance of a polynomial SVD-based broadband MIMO transceiver [PDF]

, 2010
In this paper we investigate non-linear precoding solutions for the problem of broadband multiple-input multiple output(MIMO) systems. Based on a polynomial singular value decomposition (PSVD) we can decouple a broadband MIMO channel into independent ...
Al-Hanafy, Waleed, Weiss, S.
core  

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source

Enabling cross-technology semantic communication via knowledge-driven deep joint source-channel coding

Intelligent and Converged Networks
In the Internet of things (IoTs), heterogeneous devices employing incompatible technologies, like WiFi, ZigBee, and Bluetooth, often coexist. Simplifying connections among them is crucial for ubiquitous connectivity in sixth-generation (6G) networks ...
Shumin Yao, Xiaodong Xu, Yaping Sun, Hao Chen, Qinglin Zhao, Nan Ma   +5 more
doaj   +1 more source

All-Optical VCSEL-to-VCSEL Injection Based on Cross Gain Modulation for Routing in Multinode Flexible Spectrum Optimization in Optical Fibre Transmission Links

International Journal of Optics, 2019
In this paper, we experimentally present a novel, all-optical spectral efficient vertical-cavity surface-emitting laser- (VCSEL-) based technique for routing and spectrum assignment in optical networks.
P. P. Dlamini, G. M. Isoe, D. Kiboi Boiyo, A. W. R. Leitch, T. B. Gibbon   +4 more
doaj   +1 more source