A New DS/DPSK Underwater Acoustic Communication System

DOI

10.2991/iiicec-15.2015.374How to use a DOI?

Keywords

Shallow water acoustic channel; DPSK; M-ary DSSS; anti-noise performance

Abstract

For DS/DPSK, carrier synchronization is not necessary in the receiver end, it outperforms DS/PSK systems respect to anti-frequency shift and anti-phase-jitter ability in phase changing shallow water channels, thus is considered as a robust modulation scheme in shallow water mid- and long-range acoustic communications. Traditional M-ary DSSS systems adopt difference of spread sequence, at the receiver end, differential demodulation is carried out first, and then de-spread process is performed, this method results in degradation of anti-noise performance as spreading gain was not utilized during demodulation stage. A novel differential direct sequence spread spectrum system, in which receiving bit decision was made based on sign of peak value of multiplication result of in-phase and quadrature-phase channel cross-correlation functions, is proposed in this paper. This new method is suitable for use in M-ary DSSS systems. The superior performance of this new method compared to traditional differential M-ary DSSS system in Rayleigh fading and phase fluctuating channels was valid via computer simulation.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Gangqiang Zhang
AU  - Yangze Dong
PY  - 2015/03
DA  - 2015/03
TI  - A New DS/DPSK Underwater Acoustic Communication System
BT  - Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference
PB  - Atlantis Press
SP  - 1718
EP  - 1722
SN  - 2352-538X
UR  - https://doi.org/10.2991/iiicec-15.2015.374
DO  - 10.2991/iiicec-15.2015.374
ID  - Zhang2015/03
ER  -