DocumentCode :
3584052
Title :
Using phase conjugation for underwater acoustic communication: Design guidelines
Author :
Gomes, Joao ; Barroso, Victor
Author_Institution :
Instituto Superior Técnico - Instituto de Sistemas e Robótica∗ Av. Rovisco Pais, 1049-001 Lisboa, Portugal
fYear :
2000
Firstpage :
1
Lastpage :
4
Abstract :
Broadband phase conjugation using a time-reversal mirror may be used to focus acoustic waves in inhomogeneous media. This technique has been successfully applied in the ocean over distances of a few kilometers, stimulating research into possible applications. In this paper, a time-reversal mirror is considered as a device for mitigating intersymbol interference in coherent communication, hence reducing the complexity of underwater receivers. Approximate expressions are obtained relating its focusing power with key array and environmental parameters. These provide guidelines for designing actual phase-conjugate arrays. Results obtained for a monochromatic source are then extended to broadband signals used in digital communication in order to predict the evolution of intersymbol interference in the vicinity of the focal point.
Keywords :
Acoustics; Arrays; Broadband communication; Focusing; Mirrors; Oceans; Receivers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Conference, 2000 10th European
Print_ISBN :
978-952-1504-43-3
Type :
conf
Filename :
7075652
Link To Document :
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