Performance improvements of a 50 km acoustic transmission through adaptive equalization and spatial diversity

Author

Capellano, Vittorio

Author_Institution

Centre d´´Etude des Phenomenes Aleatoires et Geophys., Domaine Univ., France

Volume

1

fYear

1997

fDate

6-9 Oct 1997

Firstpage

569

Abstract

Adaptive multichannel equalizers have become an important matter of interest in acoustic underwater communications. Their application has made data transmission over long ranges possible. The purpose of this paper is to present an overview of multichannel equalization applied to underwater acoustic transmissions. We analyze the optimal multichannel filtering structures and calculate their performances analytically. Then, we introduce a simple structure and discuss its implementation for real-time applications. Eventually we show some experimental results obtained with this multichannel receiver on a 50 km acoustic link and analyze the improvements generated by spatial combining

Keywords

acoustic receivers; adaptive equalisers; decision feedback equalisers; digital communication; digital filters; diversity reception; receivers; underwater sound; 50 km; acoustic link; acoustic transmission; acoustic underwater communications; adaptive equalization; adaptive multichannel equalizers; data transmission; multichannel receiver; optimal multichannel filtering structures; performance improvements; real-time applications; spatial combining; spatial diversity; Acoustic propagation; Adaptive equalizers; Data communication; Diversity reception; Filtering; Intersymbol interference; Performance analysis; Underwater acoustics; Underwater communication; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '97. MTS/IEEE Conference Proceedings

Conference_Location

Halifax, NS

Print_ISBN

0-7803-4108-2

Type

conf

DOI

10.1109/OCEANS.1997.634428

Filename

634428