Title :
Underwater acoustic communications using M-ary chirp-DPSK modulation
Author :
He, Chengbing ; Ran, Maohua ; Meng, Qinwei ; Huang, Jianguo
Author_Institution :
Coll. of Marine Eng., Northwestern Polytech. Univ., Xi´´an, China
Abstract :
Various spread spectrum techniques have been used to offer low data rate acoustic links. A new complex waveform named M-ary chirps (MCSS) for underwater acoustic communication without complicated signal processing, was presented and successfully tested in a lake by us in [1]. In order to increase the data rate, a novel modulation method combing MCSS, DPSK and time overlapping named MCSS-DPSK is proposed in this paper. Simulation results based on underwater channel model using lake test data show that Rake receiver with MCSS-DPSK have a robust performance in multi-path underwater acoustic channel. A water tank experiment was conducted to verify the performance of MCSS-DPSK, results showed that it was robust in multi-path channel.
Keywords :
differential phase shift keying; radio receivers; telecommunication channels; underwater acoustic communication; M-ary chirp-DPSK modulation; M-ary chirps; MCSS; Rake receiver; low data rate acoustic links; multi-path underwater acoustic channel; signal processing; spread spectrum techniques; underwater acoustic communications; underwater channel model; water tank; Chirp; Differential phase shift keying; Multipath channels; Receivers; Underwater acoustics;
Conference_Titel :
Signal Processing (ICSP), 2010 IEEE 10th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5897-4
DOI :
10.1109/ICOSP.2010.5656374