Title :
A blind multichannel combiner for long range underwater communications
Author :
Sharif, Bayan S. ; Neasham, Jeff ; Thompson, David ; Hinton, Oliver R. ; Adams, Alan E.
Author_Institution :
Dept. of Electr. & Electron. Eng., Newcastle upon Tyne Univ., UK
Abstract :
This paper presents the development and performance of blind algorithms for a spatial diversity scheme to enable reliable data telemetry over a long range underwater acoustic channel. A number of Bussgang based stochastic gradient algorithms were tested for this multipath channel with additive white and coloured shipping noise. Both simulation and real experimental tests have shown that a significant improvement is obtained by utilising the spatial diversity of the long range channel and the ability of the combiner to perform joint equalisation and carrier phase tracking
Keywords :
acoustic signal processing; diversity reception; equalisers; multipath channels; stochastic processes; telemetry; time-varying channels; tracking; underwater sound; white noise; Bussgang based stochastic gradient algorithms; additive white noise; blind algorithms; blind multichannel combiner; carrier phase tracking; coloured shipping noise; equalisation; experimental tests; long range underwater acoustic channel; long range underwater communications; multipath channel; reliable data telemetry; simulation; spatial diversity; Acoustic noise; Acoustic testing; Additive noise; Additive white noise; Colored noise; Multipath channels; Performance evaluation; Stochastic resonance; Telemetry; Underwater acoustics;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.599834
