Code signals transmission using MFSK modulation in shallow waters

• Autorzy: Zachariasz K. , Schmidt J. , Salamon R.
• Języki publikacji: EN

Abstrakty

EN

The paper presents an acoustic system for the transmission of digital data in shallow coastal waters of which multi-path propagation and intense reverberations are characteristic. To ensure a small error probability of moderate speed transmission, the system uses corrective codes and a technique of incoherent modulation MFSK (Mufti Frequency Shift Keying). To synthesise the transmission signal, estimate the spectrum of the signal received and code and decode the channels, a DSP processor was used. The paper includes the results of a computer simulation in which the system was put to work in the presence of Gaussian noise. The system was tested in shallow coastal waters and the results are discussed in the paper.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2001
• Tom: Vol. 4
• Strony: 261--264
• Opis fizyczny: Bibliogr. 3 poz., rys.

Twórcy

autor

Zachariasz K.

• Technical University of Gdańsk, ul. G. Narutowicza 11/12,80952 Gdańsk, Poland

autor

Schmidt J.

• Technical University of Gdańsk, ul. G. Narutowicza 11/12,80952 Gdańsk, Poland

autor

Salamon R.

• Technical University of Gdańsk, ul. G. Narutowicza 11/12,80952 Gdańsk, Poland

Bibliografia

• 1. D.B.Kilfoyle, A.B. Baggeroer, The state of the art in underwater acoustic telemetry, IEEE J. Oceanic Eng., Vo1.25, No.l, 4-27, 2000.
• 2. D. Porta, Underwater acoustic communications, Sea Technology, Vol. 39, No. 2, 49-55, 1998.
• 3. J.G. Proakis, Digital Communication, McGrawHill, New York, 2000.