Results 51 to 60 of about 1,567 (173)

Application of WiMAX technology in difficult geographical conditions: Perspectives for mountain environment [PDF]

BIO Web of Conferences
WiMAX (Worldwide Interoperability for Microwave Access) is a telecommunications technology designed to provide universal wireless communication over long distances for a wide range of devices (from workstations and notebook computers to mobile phones ...
Rustamova D. F., Suleymanov N. M., Gafarov G. A., Bakhshaliyeva S. V., Marasulov M., Rizaeva Sh.   +5 more
doaj   +1 more source

Weakened Eddy Activities in the South Pacific Subtropical Countercurrents Under Global Warming

Journal of Geophysical Research: Oceans, Volume 130, Issue 4, April 2025.
Abstract The subtropical countercurrent (STCC), located near the South Pacific boundary, exhibits a band of high eddy activities. These eddies have significant implications on the exchanges of heat, salt, volume, and biogeochemical properties. Yet their response to greenhouse warming change remains unknown.
Ningyuan Xiao, Shengpeng Wang, Chen Yang, Fengfei Song, Zhao Jing, Lixin Wu   +5 more
wiley   +1 more source

Modeling of Inscribed Dual Band Circular Fractal Antenna for Wi‐Fi Application Using Descartes Circle Theorem

Engineering Reports, Volume 7, Issue 1, January 2025.
This research contributes to the advancement of compact and efficient antenna designs for wireless communication systems. Detailed considerations are given to the 2.4 and 5.2 GHz bands to ensure compatibility with standard Wi‐Fi protocols. The designed circular fractal antenna is compared with the conventional circular patch antenna and the results ...
SatheeshKumar Palanisamy, Anitha R. Vaddinuri, Arfat Ahmad Khan, Muhammad Faheem   +3 more
wiley   +1 more source

Cyber–Physical–Social Security of High‐DER‐Penetrated Smart Grids: Threats, Countermeasures, and Challenges

IET Information Security, Volume 2025, Issue 1, 2025.
With the trend of large‐scale renewable distributed energy sources (DERs) penetrating into the smart grids (SGs), the SGs entail heavy reliance on information and communication technologies (ICT) and increasing impact of social behaviors on system operation and management. The SGs can be viewed as cyber–physical–social systems (CPSSs).
Qiuyu Lu, Jun’e Li, Zhao Peng, Ming Ni, Guowen Xu   +4 more
wiley   +1 more source

Novel Approaches to Enhance Mobile WiMAX Security

EURASIP Journal on Wireless Communications and Networking, 2010
The IEEE 802.16 Working Group on Broadband Wireless Access Standards released IEEE 802.16-2004 which is a standardized technology for supporting broadband and wireless communication with fixed and nomadic access.
Taeshik Shon, Bonhyun Koo, Jong Hyuk Park, Hangbae Chang   +3 more
doaj   +2 more sources

A Hybrid Heuristic Solution for Packetized Energy Transactions in Smart Homes

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
This article presents a packetized energy management (PEM) strategy for optimizing the joint problem of energy storage control and load scheduling in grid‐connected photovoltaic (PV) systems, aiming to minimize aggregated system costs for smart homes. The framework considers factors such as energy consumption, procurement costs, load scheduling delays,
Hafiz Majid Hussain, Ashfaq Ahmad, Pedro H. J. Nardelli, Muhammad Shahbaz   +3 more
wiley   +1 more source

Implementation of a Smart Antenna Base Station for Mobile WiMAX Based on OFDMA

EURASIP Journal on Wireless Communications and Networking, 2009
We present an implementation of a mobile-WiMAX (m-WiMAX) base station (BS) that supports smart antenna (SA) functionality. To implement the m-WiMAX SA BS, we must address a number of key issues in baseband signal processing related to symbol-timing ...
Hyeon Seungheon, Lee Changhoon, Shin Chang-eui, Choi Seungwon   +3 more
doaj   +2 more sources

Skip‐Connected CNN Exploiting BNN Surrogate for Antenna Modelling

International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.
The combination of evolutionary algorithms with full‐wave electromagnetic (EM) simulation software is an effective method for antenna optimal design. However, the high computational cost of calling the full‐wave EM simulation hundreds or thousands of times makes it unacceptable in terms of design time.
Yubo Tian, Jinlong Sun, Zhiwei Zhu, Rajashik Paul   +3 more
wiley   +1 more source

Gain Improvement of Bidirectional Substrate‐Integrated Waveguide‐Based Circular Cavity‐Backed Hexagonal Split Ring‐Shaped Slotted Antenna Using Metamaterial as Superstrate

International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.
A low profile substrate‐integrated waveguide (SIW)‐based circular cavity‐backed slotted antenna is proposed at an operating frequency of 5.42 GHz for wireless applications in U‐NII‐2B band in the TM010 fundamental mode. Two hexagonal split ring‐shaped slots of 7 and 4 mm radius are placed on the patch as well as on the ground plane, resulting in ...
Rimi Sengupta, Ayan Chatterjee, Soumen Banerjee, Susanta Kumar Parui, Monojit Mitra, Trushit Upadhyaya   +5 more
wiley   +1 more source

Design and Implementation of a Compact Wideband Wearable Antenna for ISM/WiMAX/WiFi/5G Band Body-Centric Wireless Applications

Журнал нано- та електронної фізики
In this work, we propose a compact, wideband, and wearable microstrip patch antenna with a defected ground structure (DGS) for body-centric wireless applications.
Md. Mehedi Hasan, Абу Зафор Доктор Тухідул Іслам   +1 more
doaj   +1 more source