Title :
Channel estimation and BER studies for an underwater acoustic OFDM system using time reversal mirror in shallow waters
Author :
Vadde, Venkatesh ; Indushree, G. ; Sequeira, Cletan
Author_Institution :
PES Inst. of Technol., Bangalore, India
Abstract :
Underwater acoustic communication in shallow-waters could greatly benefit from using multicarrier communication with time-reversal mirror as a signal-focusing tool. The advantages of combining OFDM with TRM for telemetry are investigated from a channel perspective. A channel estimation algorithm specially designed for TRM-OFDM is presented. Bit error rate characteristics and channel-usage efficiency are studied in a TRM-OFDM context. Link-level simulations for a Pekeris channel, using OFDM modulation with TRM signaling for various channel-types are presented as bit error rate (BER) results. TRM with OFDM is shown to improve system BER by a factor of 5 as compared to an OFDM system without TRM.
Keywords :
OFDM modulation; channel estimation; error statistics; mirrors; underwater acoustic telemetry; BER characteristic; Pekeris channel; TRM signaling; bit error rate characteristic; channel estimation algorithm; channel-usage efficiency; link-level simulation; multicarrier communication; shallow water; signal-focusing tool; telemetry; time reversal mirror signaling; underwater acoustic OFDM modulation system; underwater acoustic communication; Arrays; Bit error rate; Channel estimation; Frequency domain analysis; OFDM; Transmission line measurements; Underwater acoustics; BER; OFDM; Time Reversal Mirror; Underwater Acoustic Communication;
Conference_Titel :
Ocean Electronics (SYMPOL), 2011 International Symposium on
Conference_Location :
Kochi
Print_ISBN :
978-1-4673-0263-0
DOI :
10.1109/SYMPOL.2011.6170526
