Title :
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
fDate :
10/1/2001 12:00:00 AM
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;
Journal_Title :
Oceanic Engineering, IEEE Journal of
