Title :
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
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;
Conference_Titel :
OCEANS 2010 IEEE - Sydney
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-5221-7
Electronic_ISBN :
978-1-4244-5222-4
DOI :
10.1109/OCEANSSYD.2010.5603912
