Improved multipath robustness of DFH modulation in the underwater acoustic channel

Author

Cazzanti, Luca ; Egnor, Dianne ; Edelson, Geoffrey S. ; Das, A.

Author_Institution

Appl. Phys. Lab., Univ. of Washington, Seattle, WA, USA

fYear

2010

fDate

20-23 Sept. 2010

Firstpage

1

Lastpage

6

Abstract

We characterize performance improvement of differential frequency hopping modulation under two techniques that mitigate the multipath effects of the underwater acoustic channel: blind adaptive equalization and beamforming. We report results on data collected at-sea during the RACE08, SPACE08 and WHOI09 experiments, and show that the bit-error rate improves with the application of these two techniques. Future improvements may combine joint single-element, blind equalization and beamforming (multi-element) approaches to leverage their respective strengths.

Keywords

adaptive equalisers; array signal processing; error statistics; frequency hop communication; modulation; multipath channels; underwater acoustic communication; DFH modulation; RACE08; SPACE08; WHOI09; beamforming; bit error rate; blind adaptive equalization; differential frequency hopping modulation; multipath effects; multipath robustness; underwater acoustic channel; Bit error rate; Equalizers; Frequency shift keying; Receivers; Sonar equipment; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2010

Conference_Location

Seattle, WA

Print_ISBN

978-1-4244-4332-1

Type

conf

DOI

10.1109/OCEANS.2010.5664088

Filename

5664088