Effects of channel estimation on multiuser virtual MIMO-OFDMA relay-based networks

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dc.contributor.author Gil-Jiménez, Víctor P.
dc.contributor.author Ribeiro, Carlos
dc.contributor.author Gameiro, Atilio
dc.contributor.author García-Armada, Ana
dc.date.accessioned 2012-05-31T12:35:41Z
dc.date.available 2012-05-31T12:35:41Z
dc.date.issued 2010-11-11
dc.identifier.bibliographicCitation EURASIP Journal on Wireless Communications and Networking 2010, 2010:764784
dc.identifier.issn 1687-1472
dc.identifier.uri http://hdl.handle.net/10016/14426
dc.description.abstract A practical multiuser cooperative transmission scheme denoted as Virtual Maximum Ratio Transmission (VMRT) for multiple-input multiple-output-orthogonal frequency division multiple access (MIMO-OFDMA) relay-based networks is proposed and evaluated in the presence of a realistic channel estimation algorithm and using low-density parity-check (LDPC) codes. It is shown that this scheme is robust against channel estimation errors. It offers diversity and array gain, keeping the complexity low with a multiuser and multiantenna channel estimation algorithm that is simple and efficient. In addition, the combination with LDPC codes provides improved gains; diversity gains larger than 6 dB can be easily obtained with a reduced number of relays. Thus, this scheme can be used to extend coverage or increase system throughput by using simple cooperative OFDMA-based relays.
dc.description.sponsorship The authors would like to thank Jae-Yun Ko for his valuable help at the beginning of our work. This work has been partly funded by the projects MULTIADAPTIVE (TEC2008-06327- C03-02), COMONSENS (CSD2008-00010) and CODIV (ICT-2007-215477).
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher SpringerOpen
dc.rights © 2010 Víctor P. Gil Jiménez et al.
dc.subject.other MIMO-OFDM systems
dc.subject.other Multiuser
dc.title Effects of channel estimation on multiuser virtual MIMO-OFDMA relay-based networks
dc.type article
dc.description.status Publicado
dc.relation.publisherversion http://jwcn.eurasipjournals.com/content/2010/1/764784
dc.subject.eciencia Telecomunicaciones
dc.identifier.doi 10.1155/2010/764784
dc.rights.accessRights openAccess
dc.type.version publishedVersion
dc.identifier.publicationtitle EURASIP Journal on Wireless Communications and Networking
dc.identifier.publicationvolume 2010:764784
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