Title :
Adaptive multichannel equalizer for underwater communications
Author :
Capellano, Vittorio ; Loubet, Gérard ; Jourdain, Geneviève
Author_Institution :
CEPHAG-INPGrenoble, Domaine Univ., Saint Martin d´´Heres, France
Abstract :
Underwater acoustic communications are made difficult by the characteristics of the transmission channel. They experience Doppler effects, intersymbol interference and non-stationarities. In this paper, we address an original adaptive receiver which effectively compensates for the signal distortion. We present an adaptive multichannel equalizer made of a bank of transversal filters. A fast-optimized LMS algorithm is introduced and its performances are compared to that of other algorithms. Results are also described on experimental data
Keywords :
Doppler effect; acoustic receivers; adaptive equalisers; digital filters; interference suppression; intersymbol interference; least mean squares methods; receivers; telecommunication channels; underwater sound; Doppler effects; adaptive multichannel equalizer; adaptive receiver; fast-optimized LMS algorithm; intersymbol interference; nonstationarity; performance; signal distortion; transmission channel; transversal filters; underwater acoustic communications; Acoustic distortion; Data communication; Doppler effect; Equalizers; Fading; Intersymbol interference; Radio transmitters; Sensor arrays; 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.1996.568370
