Underwater acoustic receiver employing direct-sequence spread spectrum and spatial diversity combining for shallow-water multiaccess networking

Author

Tsimenidis, Charalampos C. ; Hinton, Oliver R. ; Adams, Alan E. ; Sharif, Bayan S.

Author_Institution

Dept. of Electr. & Electron. Eng., Newcastle upon Tyne Univ., UK

Volume

26

Issue

4

fYear

2001

fDate

10/1/2001 12:00:00 AM

Firstpage

594

Lastpage

603

Abstract

This paper proposes an underwater adaptive-array receiver structure that utilizes direct-sequence code division multiple access and spatial diversity combining in order to achieve reliable low-data rate multiuser communication in an asynchronous shallow-water network. The performance of the proposed receiver architecture has been verified by means of offline processing of data acquired during sea trials in the summer of 1999 in the North Sea. Results show that this computationally efficient structure is near-far resistant and provides successful multiuser operation in the shallow-water channel

Keywords

acoustic signal detection; adaptive signal detection; code division multiple access; diversity reception; quadrature phase shift keying; spread spectrum communication; underwater acoustic communication; DS-CDMA; adaptive-array receiver structure; asynchronous shallow-water network; carrier-phase synchronization; channel sounding; computationally efficient structure; correlation receiver; linear modulation; low-data rate multiuser communication; offline processing; quadrature phase-shift keying; shallow-water acoustic channel; shallow-water multiaccess networking; single-user receiver; spatial diversity combining; underwater acoustic receiver; Bandwidth; Computer architecture; Diversity reception; Information rates; Mobile communication; Multiaccess communication; Phased arrays; Spread spectrum communication; Underwater acoustics; Underwater communication;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.972099

Filename

972099