Joint channel and doppler estimation for multicarrier underwater communications

Alain Kibangou (1, 2) , Laurent Ros (3) , Cyrille Siclet (3)

1 NECS - Networked Controlled Systems
2 GIPSA-lab - Grenoble Images Parole Signal Automatique
3 GIPSA-CICS - GIPSA - Communication Information and Complex Systems

Underwater wireless communications are subject to multipath propagation and Doppler effects. In the receiver side, it is necessary to estimate both Doppler and channel parameters in order to compensate for their effects in the transmitted signal. In this paper, in the OFDM ( Orthogonal Frequency Division Multiplexing) context, we derive a new estimation scheme based on the resolution of two harmonic retrieval problems. Unlike standard methods, data resampling and estimation of residual carrier frequency offset are avoided. The efficiency of the proposed scheme is evaluated by means of simulations.

Mots clés: Underwater acoustic communications; OFDM; Doppler distortion; Hankel matrix; Vandermonde decomposition; Total least squares

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Alain Kibangou, Laurent Ros, Cyrille Siclet. Joint channel and doppler estimation for multicarrier underwater communications. ICASSP 2010 - IEEE International Conference on Acoustics, Speech and Signal Processing, Mar 2010, Dallas, United States. pp.5630-5633, ⟨10.1109/ICASSP.2010.5495258⟩. ⟨hal-00443946⟩