Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/5229
Título: Joint passive time reversal and multichannel equalization for underwater communications
Autor: Gomes, João
Silva, A.
Jesus, S. M.
Palavras-chave: Acoustic arrays
Adaptive equalizers
Intersymbol interference
Data: 2006
Editora: IEEE - Institute of Electrical and Electronics Engineers
Citação: J.P. GOMES, A. SILVA and S. JESUS, ``Joint Passive Time Reversal and Multichannel Equalization for Underwater Communications'' in Proc. OCEANS'06, pp. 1-6.
Resumo: Time reversal has aroused considerable interest in communications applications as a means of partially compensating for the intersymbol interference introduced by the channel. This paper presents experimental results for a passive time reversal experiment conducted off the west coast of Portugal during the MREA’2004 mission. A single acoustic projector generated a 2/4-PSK stream at 200 and 400 baud, modulated around a carrier frequency of 3600 Hz. The signals were received at a range of about 2 Km from the source on a sparse vertical array with 8 hydrophones. We examine several strategies for demodulating the data, including equalization, time-reversal, and combinations of both techniques. This work emphasizes the use of low-complexity multichannel combining algorithms for tracking channel variations prior to generating a passively focused signal.
Peer review: yes
URI: http://hdl.handle.net/10400.1/5229
DOI: http://dx.doi.org/10.1109/OCEANS.2006.306882
ISBN: 1-4244-0114-3
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)

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