Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/7008
Título: | Effects of channel estimation on multiuser virtual MIMO-OFDMA relay-based networks |
Autor: | Gil Jiménez, V.P. Ribeiro, C. Gameiro, A. Armada, A.G. |
Palavras-chave: | MIMO-OFDMA Virtual maximum ratio transmission Channel estimation Virtual STBC Beamforming |
Data: | 14-Nov-2010 |
Editora: | SpringerOpen |
Resumo: | In this paper, a practical multi-user 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. It is shown that this scheme is robust against channel estimation errors and offers diversity and array gain keeping the complexity low, although the multi-user and multi-antenna channel estimation algorithm is simple and efficient. Diversity gains larger than 4 can be easily obtained with reduced number of relays. Thus, this scheme can be used to extend coverage or increase system throughput by using simple cooperative OFDMA-based relays. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/7008 |
DOI: | 10.1155/2010/764784 |
ISSN: | 1687-1472 |
Aparece nas coleções: | DETI - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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VGil_Channel_Est.pdf | 198.93 kB | Adobe PDF | Ver/Abrir |
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