Results 31 to 40 of about 1,796,322 (298)

Optical wireless for intravehicle communications : a channel viability analysis [PDF]

, 2012
This paper provides an initial analysis into the viability of implementing an optical wireless system for intravehicle communications. Based on the use of a simple linearly scalable infrared light-emitting-diode transmitter, the results for received ...
Mark S. Leeson, Matthew D. Higgins, Leeson, Mark S., Higgins, Matthew D., Green, Roger, Roger J. Green   +5 more
core   +1 more source

Over-the-Air Phase Calibration Methods for 5G mmW Antenna Array Transceivers

IEEE Access
Calibration is essential to optimize the performance of any radio transceiver during its development and manufacturing processes. This paper proposes over-the-air (OTA) calibration methods based on measuring and calibrating the phases of phased array ...
Markku Jokinen, Olli Kursu, Nuutti Tervo, Aarno Parssinen, Marko E. Leinonen   +4 more
doaj   +1 more source

Performance analysis of ultra-reliable short message decode and forward relaying protocols

EURASIP Journal on Wireless Communications and Networking, 2018
Machine-type communication (MTC) is a rapidly growing technology which covers a broad range of automated applications and propels the world into a fully connected society.
Parisa Nouri, Hirley Alves, Matti Latva-aho   +2 more
doaj   +1 more source

Latency-Aware Highly-Reliable mmWave Systems via Multi-Point Connectivity

IEEE Access, 2022
The sensitivity of the millimeter-wave (mmWave) radio channel to blockages is a fundamental challenge in achieving low-latency and highly-reliable connectivity.
Dileep Kumar, Satya Krishna Joshi, Antti Tolli   +2 more
doaj   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

Wireless Traffic Usage Forecasting Using Real Enterprise Network Data: Analysis and Methods

IEEE Open Journal of the Communications Society, 2020
Wireless traffic usage forecasting methods can help to facilitate proactive resource allocation solutions in cloud managed wireless networks. In this paper, we present temporal and spatial analysis of network traffic using real traffic data of an ...
Su P. Sone, Janne J. Lehtomaki, Zaheer Khan   +2 more
doaj   +1 more source

Fitting the Distribution of Linear Combinations of t− Variables with more than 2 Degrees of Freedom

Journal of Probability and Statistics, 2023
The linear combination of Student’s t random variables (RVs) appears in many statistical applications. Unfortunately, the Student’s t distribution is not closed under convolution, thus, deriving an exact and general distribution for the linear ...
Onel L. Alcaraz López, Evelio M. Garcia Fernández, Matti Latva-aho   +2 more
doaj   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

Synchronization in wireless communications [PDF]

, 2009
The last decade has witnessed an immense increase of wireless communications services in order to keep pace with the ever increasing demand for higher data rates combined with higher mobility.
Heidi Steendam, Panayırcı, Erdal, Marco Luise, Mounir Ghogho, Ghogho, Mounir, Erdal Panayirci, Luise, Marco, Steendam, Heidi, Serpedin, Erdal, Serpedin, Erchin, Erchin Serpedin, Panayirci, Erdal   +11 more
core   +1 more source