Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Christian Ibars"'
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2010 (2010)
Externí odkaz:
https://doaj.org/article/e6f568e94d46438e8c6f4768367a24b9
Autor:
Faouzi Bader, Guillame Chelius, Christian Ibars, Mohamed Ibnkahla, Nikos Passas, Arnd-Ragnar Rhiemeier
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2010 (2010)
Externí odkaz:
https://doaj.org/article/a68f2208ca9548da90305045594ca509
Autor:
Lorenza Giupponi, Christian Ibars
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2009 (2009)
This paper proposes that secondary unlicensed users are allowed to opportunistically use the radio spectrum allocated to the primary licensed users, as long as they agree on facilitating the primary user communications by cooperating with them. The p
Externí odkaz:
https://doaj.org/article/abbb2239f94e4773b1f9ca9741f491d3
Autor:
Aitor del Coso, Christian Ibars
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2007 (2007)
Multiple-input-multiple-output (MIMO) techniques have been widely proposed as a means to improve capacity and reliability of wireless channels, and have become the most promising technology for next generation networks. However, their practical deplo
Externí odkaz:
https://doaj.org/article/53a798c2b3434b7da37f52fa5331a733
Autor:
Christian Ibars, Lorenza Giupponi
Publikováno v:
Cognitive Radio Systems
Cognitive Radio is a new paradigm in wireless communications to enhance utilization of limited spectrum resources. It is defined as a radio able to utilize available side information, in a decentralized fashion, in order to efficiently use the radio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e545acf981970b1058167b7b0199109
http://www.intechopen.com/articles/show/title/cooperative-cognitive-systems
http://www.intechopen.com/articles/show/title/cooperative-cognitive-systems
Publikováno v:
IEEE Transactions on Vehicular Technology. 65:5995-6009
We study the application of random linear network coding (RLNC) for cooperative coverage extension in land mobile satellite (LMS) vehicular networks. We perform an analytical assessment of the limits of cooperation in the presence of both a satellite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9760317b959beb0e1fe47e3f26dd0298
https://doi.org/10.1109/tvt.2015.2480703
https://doi.org/10.1109/tvt.2015.2480703
Autor:
Shlomo Selim Rakib, Jim Delfeld, Andreas F. Molisch, Robert Calderbank, Andrea Goldsmith, Michail Tsatsanis, Anton Monk, Ronny Hadani, Christian Ibars
Publikováno v:
2017 IEEE MTT-S International Microwave Symposium (IMS).
Due to the increased demand for data rate, flexibility, and reliability of 5G cellular systems, new modulation formats need to be considered. A recently proposed scheme, Orthogonal Time Frequency Space (OTFS), offers various advantages in particular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34406cfd559032d361f1d66dd3735644
https://doi.org/10.1109/mwsym.2017.8058662
https://doi.org/10.1109/mwsym.2017.8058662
Publikováno v:
International Journal of Satellite Communications and Networking. 32:225-241
SUMMARY We propose a collision recovery scheme for symbol-synchronous slotted ALOHA based on physical layer network coding over extended Galois fields. Information is extracted from colliding bursts allowing to achieve higher maximum throughput with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27b8df93ebda29228dcddd4305ae9e7a
https://doi.org/10.1002/sat.1056
https://doi.org/10.1002/sat.1056
Publikováno v:
GLOBECOM Workshops
Delay spread can be detrimental to communication systems. Orthogonal Frequency Division Multiplexing (OFDM)/Discrete Fourier Transform-spread-OFDM (DFT-s- OFDM) based systems (for e.g., Long Term Evolution (LTE), WiFi, etc.) tackle delay spread by ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0968bff5ccf3ae965c64792c87eafb88
https://doi.org/10.1109/glocomw.2015.7414204
https://doi.org/10.1109/glocomw.2015.7414204
Autor:
Christian Ibars, A. del Coso
Publikováno v:
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
r-CTTC. Repositorio Institucional Producción Científica del Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Universitat Oberta de Catalunya (UOC)
r-CTTC. Repositorio Institucional Producción Científica del Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Universitat Oberta de Catalunya (UOC)
Linear Relaying (LR) is the extension of amplify-and-forward to full-duplex operation, and consists of relay nodes transmitting (on every channel use) a linear combination of previously received signals. From a practical standpoint, it is one of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4491696bfff4489993de711e6d37fa5c
https://doi.org/10.1109/t-wc.2008.080442
https://doi.org/10.1109/t-wc.2008.080442