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Dai Liu, Zhenglin Li, Guangxu Wang and Yunfeng Liu
An undulating bottom in shallow water has a significant effect on sound propagation. An acoustic propagation experiment was carried out in the East China Sea in 2020. Measurements along two separate propagation tracks with flat and undulating bottoms wer...
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Vlastimil Clupek, Tomas Horvath, Petr Munster and Vaclav Oujezsky
Passive optical networks are currently the most promising solution for access networks. These networks rely on broadcast signal distribution in the downstream direction and unicast signal transmission in the upstream direction. The upstream direction is ...
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Sarfraz Ahmad and Muhammad Junaid Arshad
The purpose of this study is to enhance the performance of Multistream Fast Transmission Control Protocol (TCP) keeping in view the recent web-based applications that are being deployed on long-range, high-speed, and high-bandwidth networks. To achieve t...
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Tomas Horvath,Petr Munster,Josef Vojtech,Ondrej Havlis,Martin Gallo
Pág. 141 - 147
Passive optical networks are the most promising solution for access networks. The first standard provided only 155 Mbit/s but current networks work according to ITU-T G.984.3 with 2.5 Gbit/s in downstream. However, NG-PON2 offers up to 40 Gbit/s in ...
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Tomas Horvath,Petr Munster,Miloslav Filka
Pág. 112 - 116
Passive optical networks are widely used because of their sufficient bandwidth and low price of individual elements.Based on the European Commission, The Czech Republic ISPs have to ensure 30 Mbit/s (in existing networks) and 100 Mbit/s (in new construct...
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Tomas Horvath,Petr Munster,Michal Jurcik,Miloslav Filka
Pág. 204 - 209
Passive optical networks are dominating access networksaround the world due to its their economical aspect, bandwidth, and penetration. It is necessary to deal with specification of these networks. The article deals with a transmission convergence layer ...
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Ageliki N Tsioliaridou,Chi Zhang,Christos K Liaskos
Pág. pp. 64 - 68
Multimedia CAPTCHAs play a crucial role in bot filtering policies for VoIP applications. Network flows carrying CAPTCHA content have a very small lifespan and require high transmission quality, making for special handling at transport layer. The present ...
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