Results 21 to 30 of about 14,385 (306)

Spectrum Assignment with Non-Deterministic Bandwidth of Spectrum Holein Cognitive Radio Networks

MATEC Web of Conferences, 2016
The spectrum allocation for cognitive radio networks (CRNs) has received considerable studies under the assumption that the bandwidth of spectrum holes is static.
Huang Jie, He Yuan, Zeng Xiaoping, Tan Xiaoheng, Miao Lijuan   +4 more
doaj   +1 more source

On the complexity of bandwidth allocation in radio networks

Theoretical Computer Science, 2008
AbstractWe define and study an optimization problem that is motivated by bandwidth allocation in radio networks. Because radio transmissions are subject to interference constraints in radio networks, physical space is a common resource that the nodes have to share in such a way, that concurrent transmissions do not interfere.
Klasing, Ralf, Pérennes, Stéphane, Morales, Nelson   +2 more
openaire   +3 more sources

Contribution of non‐orthogonal multiple access signalling to practical multibeam satellite deployments

International Journal of Satellite Communications and Networking, EarlyView., 2023
The potential gains of NOMA were evaluated in a satellite system with heterogeneous receivers, after considering the use of specific DVB‐S2X MODCODs, along with the impact of non‐linearities. It was concluded that a judicious power allocation in NOMA, jointly optimized with the IBO of the PAs, can yield significant sum‐rate gains.
Tomás Ramírez, Carlos Mosquera
wiley   +1 more source

Time and phase alignment of distributed gateways: Theoretical analysis and experimental demonstration

International Journal of Satellite Communications and Networking, EarlyView., 2023
The performance limitation in multiple‐input multiple‐output (MIMO) feeder links due to time and phase misalignment of the ground stations is investigated. Time and phase distribution over optical fiber is considered as an approach to achieve the synchronization requirements.
Eriserdi Mollaymeri, Thomas Delamotte, Andreas Knopp   +2 more
wiley   +1 more source

Layered bandwidth allocation algorithm for multi-service in orthogonal frequency division multiplexing passive optical network

Tongxin xuebao, 2018
Due to the superiority in large bandwidth capacity and flexible resource allocation,orthogonal frequency division multiplexing passive optical network (OFDM-PON) has been recognized as one of the promising candidates for the next generation PON.There are
Yejun LIU, Yuying LIU, Pengchao HAN, Jidong WANG, Lei GUO   +4 more
doaj   +2 more sources

Adaptive bandwidth allocation algorithm based on the multi-threshold reservation mechanism

Tongxin xuebao, 2014
An adaptive bandwidth allocation algorithm based on multi-threshold reservation mechanism is proposed to guarantee the quality of service (QoS) of multi-services in heterogeneous wireless networks.With the bandwidth reserva-tion mechanism by setting ...
Geng CHEN, Wei-wei XIA, Lian-feng SHEN
doaj   +2 more sources

Quality‐of‐service‐aware fair bandwidth allocation scheme for fibre wireless networks

IET Networks, 2016
Fibre wireless (FiWi) access networks constitute a promising candidate to meet the demanding challenges of the modern bandwidth‐hungry services and applications. Due to the dynamic nature of the network traffic in access domains, the bandwidth allocation
Antonios Sarigiannidis, Petros Nicopolitidis   +1 more
doaj   +1 more source

Online bandwidth auctions for efficient allocation of bandwidth

Proceedings. 2004 12th IEEE International Conference on Networks (ICON 2004) (IEEE Cat. No.04EX955), 2005
This paper describes an on-line auction process for dynamic bandwidth allocation in communication networks. The auction is intended to be repeated at short (perhaps ten minute) intervals. The outcome of the auction gives both the bandwidth allocation, and the price to be paid for it.
Ying Peng Que, D. Platt
openaire   +2 more sources

Advances in Photonic Materials and Integrated Devices for Smart and Digital Healthcare: Bridging the Gap Between Materials and Systems

Advanced Materials, EarlyView.
This article summarizes significant technological advancements in materials, photonic devices, and bio‐interfaced systems, which demonstrate successful applications for impacting human healthcare via improved therapies, advanced diagnostics, and on‐skin health monitoring.
Seunghyeb Ban, Hoon Yi, Jaejin Park, Yunuo Huang, Ki Jun Yu, Woon‐Hong Yeo   +5 more
wiley   +1 more source

Superior Adhesion of Monolayer Amorphous Carbon to Copper

Advanced Materials, EarlyView.
The adhesion energy of monolayer amorphous carbon on copper substrate is 85 J m−2, 13 times higher than that of graphene due to covalent‐like bonding between the sp2 carbon structure to copper. X‐ray photoelectron spectroscopy (XPS), near‐edge X‐ray absorption (NEXAFS), and (density functional theory) DFT calculations are used to elucidate the ...
Hongji Zhang, Artem K. Grebenko, Konstantin V. Iakoubovskii, Hanning Zhang, Ruslan Yamaletdinov, Anna Makarova, Alexander Fedorov, Rejaul SK, Ranjith Shivajirao, Zheng Jue Tong, Sergey Grebenchuk, Ugur Karadeniz, Lu Shi, Denis V. Vyalikh, Ya He, Andrei Starkov, Alena A. Alekseeva, Chuan Chu Tee, Carlo Mendoza Orofeo, Junhao Lin, Kazutomo Suenaga, Michel Bosman, Maciej Koperski, Bent Weber, Kostya S. Novoselov, Oleg V. Yazyev, Chee‐Tat Toh, Barbaros Özyilmaz   +27 more
wiley   +1 more source