Multiuser underwater acoustic communication based on multicarrier-multiple chirp rate shift keying

Author

Cheng En ; Lin Xiaoyang ; Yuan Fei

Author_Institution

Key Lab. of Underwater Acoust. Commun. & Marine Inf. Technol., Xiamen Univ., Xiamen, China

fYear

2014

fDate

7-10 April 2014

Firstpage

1

Lastpage

5

Abstract

Multiuser underwater acoustic communication is one of the enabling technologies for the autonomous oceans sampling network (AOSN). Based on explicit relationship between fractional Fourier transform properties of chirp signal and its parameters, we proposed a new modulation and demodulation scheme named multicarrier-multiple chirp rate shift keying (MC-MCrSK). The scheme can support four users communication via underwater acoustic channel with 10 KHz bandwidth. Receiver can increase robustness by virtual time reversal mirror technology (VTRM). The validity of the simulation comparison is verified in experiment. 425 bps data rate per user of the proposed communication scheme is realized in 10 KHz bandwidth.

Keywords

Fourier transforms; acoustic receivers; chirp modulation; demodulation; telecommunication channels; underwater acoustic communication; AOSN; MC-MCrSK; VTRM; and demodulation scheme; autonomous oceans sampling network; bandwidth 10 kHz; bit rate 425 bit/s; chirp signal; demodulation scheme; fractional Fourier transform properties; multicarrier-multiple chirp rate shift keying; multiuser underwater acoustic communication; receiver; underwater acoustic channel; virtual time reversal mirror technology; Bandwidth; Channel estimation; Chirp; Fourier transforms; Receivers; Time-domain analysis; Underwater acoustics; fractional Fourier transform; multi-user; underwater acoustic communication;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2014 - TAIPEI

Conference_Location

Taipei

Print_ISBN

978-1-4799-3645-8

Type

conf

DOI

10.1109/OCEANS-TAIPEI.2014.6964371

Filename

6964371