Alamouti space time coded OFDM for underwater acoustic channels

Author

Li, Baosheng ; Stojanovic, Milica

Author_Institution

Dept. of Elec. & Comput. Eng., Northeastern Univ., Boston, MA, USA

fYear

2010

fDate

24-27 May 2010

Firstpage

1

Lastpage

3

Abstract

Alamouti space-time coding is investigated in conjunction with OFDM modulation for high-rate underwater acoustic communications over time varying channels. The scheme´s diversity gain is exploited using a low-complexity adaptive multichannel receiver. Performance is demonstrated using experimental data transmitted in a 10 kHz bandwidth over a 1 km shallow water channel south of the Martha´s Vineyard island in New England. The two-transmitter Alamouti scheme shows the expected improvement over the same-rate single-transmitter scheme.

Keywords

OFDM modulation; acoustic receivers; modulation coding; space-time codes; time-varying channels; underwater acoustic communication; Alamouti space time coded OFDM modulation; bandwidth 10 kHz; high-rate underwater acoustic communications; low-complexity adaptive multichannel receiver; same-rate single-transmitter scheme; scheme diversity gain; shallow water channel; time varying channels; two-transmitter Alamouti scheme; underwater acoustic channels; Channel estimation; Encoding; MIMO; OFDM; Receivers; Transmitters; Underwater acoustics;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2010 IEEE - Sydney

Conference_Location

Sydney, NSW

Print_ISBN

978-1-4244-5221-7

Electronic_ISBN

978-1-4244-5222-4

Type

conf

DOI

10.1109/OCEANSSYD.2010.5603912

Filename

5603912