Results 31 to 40 of about 869,960 (293)

A Modified Regular Perturbation Model for the Single-Span Fiber Transmission Using Learnable Methods

Photonics
In fiber optic communication systems, the dispersion and nonlinear interaction of optical signals are critical to modeling fiber optic communication, and the regular perturbation (RP) model is a simplified modeling method composed of parallel branches ...
Shuhong He, Zhongya Li, Sizhe Xing, An Yan, Yingjun Zhou, Jianyang Shi, Chao Shen, Ziwei Li, Zhixue He, Wei Chen, Nan Chi, Junwen Zhang   +11 more
doaj   +1 more source

On call admission control and handover management in multimedia LEO satellite systems

, 2013
11 S.Low earth orbit (LEO) satellite systems gained considerable interest in the past decade and were expected to be instrumental in future telecommunications systems.
Pavlidou, Fotini-Niovi, Todorova, Petia, Karapantazis, Stylios   +2 more
core   +1 more source

Energy-Efficient and QoS-Aware Computation Offloading in GEO/LEO Hybrid Satellite Networks

, 2023
Benefiting from advanced satellite payload technologies, edge computing servers can be deployed on satellites to achieve orbital computing and reduce the mission processing delay.
Yunqing Ding, Wenkai Lv, Zhenyi Wang, Pengfei Yang, Chengmin Lin, Quan Wang   +5 more
core   +1 more source

Analysis on BDS-3 Autonomous Navigation Performance Based on the LEO Constellation and Regional Stations

Remote Sensing, 2023
The global navigation satellite system (GNSS) is developing rapidly, and the related market applications and scientific research are increasing. Studies based on large low Earth orbit (LEO) satellite constellations have become research hotspots.
Baopeng Xu, Xing Su, Zhimin Liu, Mudan Su, Jianhui Cui, Qiang Li, Yan Xu, Zeyu Ma, Tao Geng   +8 more
doaj   +1 more source

Multiple Antenna Configuration of LEO-MIMO Feeder Link for High Channel Capacity

IEEE Access
We investigated low Earth orbit satellite (LEO) communications applying Multiple-Input/Multiple-Output (MIMO) technology to the feeder link transmission between a satellite and gateway antennas to improve the channel capacity.
Daisuke Goto, Kiyohiko Itokawa, Koyo Tategami, Fumihiro Yamashita   +3 more
doaj   +1 more source

Darkening Low-Earth Orbit Satellite Constellations: A Review

IEEE Access, 2022
The proliferation of low-earth orbit (LEO) satellites and the LEO satellite internet will be a game-changer for the low-latency high-speed global internet.
Ali Lalbakhsh, Andrew Pitcairn, Kaushik Mandal, Mohammad Alibakhshikenari, Karu P. Esselle, Sam Reisenfeld   +5 more
doaj   +1 more source

Satellite handover techniques for LEO networks [PDF]

International Journal of Satellite Communications and Networking, 2004
AbstractLow earth orbit satellite constellations could play an important role in future mobile communication networks due to their characteristics, such as global coverage and low propagation delays. However, because of the non‐stationarity of the satellites, a call may be subjected to handovers, which can be cell or satellite handovers.
Papapetrou, E., Karapantazis, S., Dimitriadis, G., Pavlidou, F. N.   +3 more
openaire   +2 more sources

Resource Allocation for LEO Beam-Hopping Satellites in a Spectrum Sharing Scenario

IEEE Access, 2021
In recent years, low earth orbit (LEO) satellite constellation systems have been developed rapidly. However, the scarcity of satellite spectrum resources has become one of the major obstacles to this trend.
Jingyu Tang, Dongming Bian, Guangxia Li, Jing Hu, Jian Cheng   +4 more
doaj   +1 more source

Delivery of DNA‐encoded vaccines and proteins in mice using cutaneous suction‐mediated transfection

FEBS Open Bio, EarlyView.
Cutaneous suction‐mediated transfection in mice for delivery of DNA‐encoded vaccines and proteins. A critical limitation of DNA vaccines and other therapeutics is transfection in vivo to produce the encoded antigens or therapeutic proteins. Cutaneous suction‐based methods have demonstrated effectiveness in many animal models and have been successfully ...
Emran O. Lallow, Isabel Brandtjen, Yaxin Mo, Melissa Gulley, Louis Osorio, Sagar Kudchodkar, Nandita C. Jhumur, Christine C. Roberts, Lisa K. Denzin, David I. Shreiber, Biju Parekkadan, Hao Lin, Joel N. Maslow   +12 more
wiley   +1 more source

Disentangling Bulk and Surface Contributions to Charge and Discharge Fading in High‐Voltage LiCoO2

Advanced Functional Materials, EarlyView.
High‐voltage operation of LiCoO2 accelerates capacity fading through bulk and surface degradation. By introducing a LiTaO3 coating to selectively suppress surface degradation, bulk and surface contributions to charge and discharge fading are decoupled.
Hyungjoon Moon, Sangbin Park, Jaewoo Jung, Seongeun Lee, Chanwoo Jung, Min‐Sik Park, Won‐Sub Yoon   +6 more
wiley   +1 more source