LTE/Wi-Fi Coexistence in 5 GHz ISM Spectrum: Issues, Solutions and Perspectives

Autor: Andre Mendes Cavalcante, Fuad Mousse Abinader, Robson D. Vieira, Sayantan Choudhury, Fabiano Chaves, Esa Tuomaala, Klaus Doppler, Vicente A. de Sousa, Erika Portela Lopes de Almeida

Publikováno v: Wireless Personal Communications. 99:403-430

The introduction of a high number of small cells in cellular networks and the complementary adoption of WLAN technologies in unlicensed spectrum are interesting options to attend the increasing demand for Internet traffic in wireless broadband access

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::daa491b4995533a111fee24c2632667f
https://doi.org/10.1007/s11277-017-5114-2

The Development of the ITU-R Terrestrial Clutter Loss Model

Autor: Preben Mogensen, Huan Cong Nguyen, Jonas Medbo, Wataru Yamada, Troels B. Sorensen, Bengt-Erik Olsson, Christina Larsson, Istvan Z. Kovacs, Fabiano Chaves, Motoharu Sasaki, Kyung-Tak Lee, Jung Soo Woo, Ignacio Rodriguez Larrad

Publikováno v: Medbo, J, Larsson, C, Olsson, B E, Chaves, F, Nguyen, H C, Rodriguez Larrad, I, Sørensen, T B, Kovács, I Z, Mogensen, P E, Lee, K, Woo, J S, Sasaki, M & Yamada, W 2018, The Development of the ITU-R Terrestrial Clutter Loss Model . in 12th European Conference on Antennas and Propagation (EuCAP 2018) . Institution of Engineering and Technology, 12th European Conference on Antennas and Propagation, London, United Kingdom, 09/04/2018 . https://doi.org/10.1049/cp.2018.0724

The ITU-R has recently published a new Recommendation giving methods for the estimation of clutter loss at frequencies between 30 MHz and 100 GHz. This paper provides an overview of the methods. In particular, the derivation and form of the new clutt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e75a5b19a525b8dbb1c2d82a7d8862a5
https://vbn.aau.dk/ws/files/280815252/ITU_R_terrestrial_clutter_loss_model_aftersubmission_v2.pdf

Dez anos do Programa de Subvenção ao Prêmio de Seguro Agrícola: Proposta de índice técnico para análise do gasto público e ampliação do seguro

Autor: dos Santos, Gesmar Rosa, da Silva, Fabiano Chaves

Production insurance is one of the main instruments of agricultural policy at the global level. It provides security against the damages caused by bad weather, as well as induces the adoption of technologies and preserves productive capacities. In se

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1687::e77183e7eb5d818d8001c63aa792a622
https://hdl.handle.net/10419/177506

Power limits for secondary devices operating on TV white spaces

Autor: Erika Portela Lopes de Almeida, Fabiano Chaves, Robson D. Vieira, Renato F. Iida

Publikováno v: Analog Integrated Circuits and Signal Processing. 78:717-728

The use of TV white spaces as an alternative to overcome spectrum scarcity is a huge opportunity for new telecommunication systems and services. While being attractive for its desirable propagation characteristics, this part of the spectrum imposes a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::929d37cda1bc3cafd8a308190c9adc99
https://doi.org/10.1007/s10470-013-0129-4

Performance Evaluation of IEEE 802.11n WLAN in Dense Deployment Scenarios

Autor: Andre Mendes Cavalcante, Erika Portela Lopes de Almeida, Robson D. Vieira, Vicente A. de Sousa, Fabiano Chaves, Esa Tuomaala, Klaus Doppler, Fuad Mousse Abinader, Sayantan Choudhury

Publikováno v: VTC Fall

The default medium access mechanism for Wi-Fi, Distributed Coordination Function (DCF), is a simple contention based protocol aimed at providing a fair distribution of resources among Wi-Fi nodes. However, DCF suffers from significant performance deg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cb68ab67ab5630d7be81dd75a0d371a1
https://doi.org/10.1109/vtcfall.2014.6966123