Results 41 to 50 of about 503,865 (272)

LTE enhancements for Public Safety and Security communications to support Group Multimedia Communications [PDF]

, 2015
Currently Public Safety and Security communication systems rely on reliable and secure Professional Mobile Radio (PMR) Networks that are mainly devoted to provide voice services.
Carlà, Lorenzo, Fantacci, Romano, Gei, Francesco, Marabissi, Dania, Micciullo, Luigia   +4 more
core   +2 more sources

Implementation and Testing of V2I Communication Strategies for Emergency Vehicle Priority and Pedestrian Safety in Urban Environments

Sensors
This paper explores the development and testing of two Internet of Things (IoT) applications designed to leverage Vehicle-to-Infrastructure (V2I) communication for managing intelligent intersections.
Federica Oliva, Enrico Landolfi, Giovanni Salzillo, Alfredo Massa, Simone Mario D’Onghia, Alfredo Troiano   +5 more
doaj   +1 more source

QoE-Based Resource Allocation for Heterogeneous Multi-Radio Communication in Software-Defined Vehicle Networks

IEEE Access, 2018
Recently, vehicle to everything (V2X) communications have drawn a significant amount of attention. Emerging V2X applications demand the efficient utilization of heterogeneous access technologies, such as long-term evolution (LTE), Wi-Fi, and dedicated ...
Wei Huang, Lianghui Ding, De Meng, Jenq-Neng Hwang, Yiling Xu, Wenjun Zhang   +5 more
doaj   +1 more source

Review of V2X–IoT Standards and Frameworks for ITS Applications

Applied Sciences, 2020
The intelligent transport system (ITS) has become one of the most globally researched topics with a lot of investment and development resources being dedicated into it due to its foreseen impact on the economic growth of the transport sector.
Karolis Kiela, Vaidotas Barzdenas, Marijan Jurgo, Vytautas Macaitis, Justas Rafanavicius, Aleksandr Vasjanov, Leonid Kladovscikov, Romualdas Navickas   +7 more
doaj   +1 more source

Low-Cost Transceiver Architectures for 60 GHz Ultra Wideband WLANs

International Journal of Digital Multimedia Broadcasting, 2009
Millimeter-wave multiport transceiver architectures dedicated to 60 GHz UWB short-range communications are proposed in this paper. Multi-port circuits based on 90° hybrid couplers are intensively used for phased antenna array, millimeter-wave modulation ...
S. O. Tatu, E. Moldovan, S. Affes
doaj   +1 more source

A Review on IEEE 802.11p for Intelligent Transportation Systems

Journal of Sensor and Actuator Networks, 2020
Road safety is an active area of research for the automotive industry, and certainly one of ongoing interest to governments around the world. The intelligent transportation system (ITS) is one of several viable solutions with which to improve road safety,
Fabio Arena, Giovanni Pau, Alessandro Severino   +2 more
doaj   +1 more source

Modified U Slot Patch Antenna with Large Frequency Ratio for Vehicle-to-Vehicle Communication

Sensors, 2023
This paper presents a single-fed, single-layer, dual-band antenna with a large frequency ratio of 4.74:1 for vehicle-to-vehicle communication. The antenna consists of a 28 GHz inset-fed rectangular patch embedded into a 5.9 GHz patch antenna for dual ...
Sandhiya Reddy Govindarajulu, Md Nurul Anwar Tarek, Marisol Roman Guerra, Asif Hassan, Elias Alwan   +4 more
doaj   +1 more source

Implementation and Evaluation of a Cooperative Vehicle-to-Pedestrian Safety Application

, 2017
While the development of Vehicle-to-Vehicle (V2V) safety applications based on Dedicated Short-Range Communications (DSRC) has been extensively undergoing standardization for more than a decade, such applications are extremely missing for Vulnerable Road
Abuchaar, Oubada, Fallah, Yaser P., Mahjoub, Hossein Nourkhiz, Moradi-Pari, Ehsan, Tahmasbi-Sarvestani, Amin   +4 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Adaptive Message Rate Control of Infrastructured DSRC Vehicle Networks for Coexisting Road Safety and Non-Safety Applications

International Journal of Distributed Sensor Networks, 2012
Intelligent transport system (ITS) has large potentials on road safety applications as well as nonsafety applications. One of the big challenges for ITS is on the reliable and cost-effective vehicle communications due to the large quantity of vehicles ...
Wenyang Guan, Jianhua He, Chao Ma, Zuoyin Tang, Yue Li   +4 more
doaj   +1 more source