Title :
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
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;
Conference_Titel :
OCEANS 2014 - TAIPEI
Conference_Location :
Taipei
Print_ISBN :
978-1-4799-3645-8
DOI :
10.1109/OCEANS-TAIPEI.2014.6964371
