Title :
Underwater acoustic communication utilising parametric transduction with M-ary DPSK modulation
Author :
Zheng, Ming ; Coates, Rodney F W ; Wang, Liansheng ; Stoner, Richard
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
Abstract :
A real-time M-ary differential phase-shift keying (MDPSK) communication system utilising parametric transduction has been constructed. The system employs a 50 kHz primary frequency and a 5 kHz difference frequency. It has been tested in the Gulf of Lion and at Cap Ferrat in the Mediterranean Sea. Experimental results indicate that the system can be used in shallow water to realise real-time acoustic communications at ranges of tens of kilometres and can achieve data rates of 1, 2, and 3 kb s-1 for 2-, 4-, and 8-DPSK respectively
Keywords :
acoustic parametric devices; channel capacity; differential phase shift keying; real-time systems; telecommunication equipment; ultrasonic transducer arrays; underwater sound; 2-DPSK; 4-DPSK; 50 kHz; 8-DPSK; Cap Ferrat; Gulf of Lion; M-ary DPSK modulation; Mediterranean Sea; data rates; difference frequency; parametric transduction; primary frequency; real-time M-ary differential phase-shift keying; real-time acoustic communications; shallow water; underwater acoustic communication; Differential phase shift keying; Differential quadrature phase shift keying; Fluctuations; Frequency; Intersymbol interference; Phase modulation; Real time systems; Transmitters; Underwater acoustics; Underwater communication;
Conference_Titel :
OCEANS '96. MTS/IEEE. Prospects for the 21st Century. Conference Proceedings
Conference_Location :
Fort Lauderdale, FL
Print_ISBN :
0-7803-3519-8
DOI :
10.1109/OCEANS.1996.566707
