Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/25659
Autoria: | Brás, F. Ferreira, F. Monteiro, F. A. Rodrigues, A. |
Editor: | IEEE |
Data: | 2014 |
Título próprio: | Interference suppression with physical-layer network coding and MIMO for multi-way channels |
ISBN: | 978-1-4799-6588-5 |
DOI (Digital Object Identifier): | 10.1109/SiPS.2014.6986065 |
Palavras-chave: | Multi-way channel MIMO Interference cancelation Physical-layer network coding |
Resumo: | Orthogonal techniques (such as TDMA – time division multiple access) are traditionally used when a set of terminals wants to exchange data and a relay is required when wireless terminals cannot communicate directly. This paper proposes two schemes to address multi-way channels when a set of terminals wants to exchange data. Both proposed schemes consist of a first phase based on virtual MIMO with lattice reduction-aided (LRA) detection at the relay, establishing a multiple access channel (MAC). Two new strategies are then proposed for the second (multicast) phase; one for single antenna terminals and another for multiple-input multiple-output (MIMO) terminals. The second strategy achieves interference suppression by successively combining physical layer network coding and MIMO detection (with LRA detectors also at the terminals). The paper assesses a 3 terminals network with a relay for which a TDMA-based scheme would require 6 time-slots, while the proposed strategy for MIMO terminals is able to exchange the information between all terminals using 2 time-slots only. This latter scheme is easily scalable to a higher number of terminals, and always able to accomplish the exchange of messages between all of them in just 2 time-slots, although limited by the number of antennas that the terminals can fit and also the MIMO processing complexity they can afford. |
Arbitragem científica: | yes |
Acesso: | Acesso Aberto |
Aparece nas coleções: | IT-CRI - Comunicações a conferências internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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conferenceobject_17633.pdf | Versão Aceite | 287,32 kB | Adobe PDF | Ver/Abrir |
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