Results 41 to 50 of about 25,855 (301)

Optimal sensing performance for cooperative and non-cooperative cognitive radio networks

International Journal of Distributed Sensor Networks, 2017
Spectrum sensing has gained new aspects with the advent of cognitive radio and opportunistic spectrum access techniques. Spectrum sensing plays a vital role in cognitive radio networks, and its reliability determines the success of transmission.
Waqas Khalid, Heejung Yu
doaj   +1 more source

Pragmatic distributed algorithm for spectral access in cooperative cognitive radio networks [PDF]

, 2014
A pragmatic distributed algorithm (PDA) is proposed for supporting the efficient spectral access of multiple Primary Users (PUs) and Cognitive Users (CUs) in cooperative Cognitive Radio (CR) networks. The novelty of our PDA is that the PUs negotiate with
Ng, S.X., Liang, Wei, Feng, Jiao, Hanzo, Lajos   +3 more
core   +1 more source

Performance Metrics in Cognitive Radio Networks

مجلة المختار للعلوم, 2021
In Cognitive Radio Networks (CRN), the main aim is to allow the secondary users (SUs) to identify the empty bands and use them to transmit or receive data opportunistically.
Mahmoud Ali Ammar
doaj   +1 more source

Concurrent Bandits and Cognitive Radio Networks [PDF]

, 2014
We consider the problem of multiple users targeting the arms of a single multi-armed stochastic bandit. The motivation for this problem comes from cognitive radio networks, where selfish users need to coexist without any side communication between them, implicit cooperation or common control.
Orly Avner, Shie Mannor
openaire   +2 more sources

Securing cognitive radio networks

International Journal of Communication Systems, 2010
AbstractCognitive radio is a promising technology aiming to improve the utilization of the radio electromagnetic spectrum. A cognitive radio device uses general purpose computer processors that run radio applications software to perform signal processing.
León Abarca, Olga, Hernández Serrano, Juan, Soriano Ibáñez, Miguel   +2 more
openaire   +4 more sources

Social-aware routing for cognitive radio–based vehicular ad hoc networks

International Journal of Distributed Sensor Networks, 2019
Cognitive radio–based vehicular ad hoc networks can solve the problem of limited spectrum resource and growing vehicular communication service demands in intelligent transportation systems, and thus, it receives much concern recently.
Jing Wang, Huyin Zhang, Xing Tang, Sheng Hao   +3 more
doaj   +1 more source

Solution‐Processed Two‐Dimensional Indium Oxide on Sodium‐Embedded Alumina for Reconfigurable Optoelectronic Synaptic Transistors

Advanced Functional Materials, EarlyView.
Wafer‐scale two‐dimensioanl In2Se3 oxidized into InOx on sodium‐embedded beta‐alumina enables multifunctional reconfigurable electronics. Sodium ions accumulate within distinct spatial distribution under drain‐controlle and gate‐controlled operation. Drain‐control operation gives controllability of ultraviolet‐driven optoelectronic synaptic conductance
Jinhong Min, Yonghyun Albert Kwon, Hyunbin Kim, Jihyun Kim, Myeongjin Jung, Jaewon Heo, Gwang Ya Kim, Vlastimil Mazanek, Zdeněk Sofer, In Soo Kim, Jeong Ho Cho, Hyesung Park, Sang Min Won, Joohoon Kang   +13 more
wiley   +1 more source

A dynamic spectrum access scheme for cognitive radio networks

, 2009
—In this paper, the dynamic spectrum access problem for cognitive radio (CR) networks is formulated as maximizing the sum channel capacity while satisfying the power budgets of individual secondary user radios as well as the SINR constraints on both the ...
K.-L. Du, Du, K. -L., Swamy, M. N. S., K. -L. Du, Du, KL, Qiang Ni, Ni, Q, Ni, Qiang, Swamy, MNS, M. N. S. Swamy   +9 more
core   +1 more source

A Long‐Lived Human Neurovascular PENTA Culture Model Captures Incomplete Vascular Repair and Glia‐Associated Signaling After Traumatic Brain Injury

Advanced Healthcare Materials, EarlyView.
A long‐lived, five‐cell‐type human neurovascular (PENTA) model recreates vascular disorganization and incomplete repair after traumatic brain injury (TBI). By integrating endothelial, glial, neuronal, and immune components within a 3D scaffold, the platform enables time‐resolved analysis of neurovascular remodeling and provides a human‐relevant system ...
Daniel S. Hinrichsen, Sunghyun Jun, Colleen M. Arrasmith, Charitha C. Anamala, Mitchell D. Thielen, Anapaula Garcia, Volha Liaudanskaya   +6 more
wiley   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source