Title :
Joint channel and Doppler estimation for multicarrier underwater communications
Author :
Kibangou, A.Y. ; Siclet, C. ; Ros, L.
Author_Institution :
Syst. Control Dept., UJF, Grenoble, France
Abstract :
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.
Keywords :
Doppler effect; OFDM modulation; acoustic signal processing; underwater acoustic communication; underwater acoustic propagation; Doppler estimation; data estimation; data resampling; harmonic retrieval problems; joint channel estimation; multicarrier underwater communications; multipath propagation; orthogonal frequency division multiplexing; residual carrier frequency; underwater wireless communications; Bandwidth; Communication system control; Control systems; Delay estimation; Frequency estimation; OFDM; Signal resolution; Underwater acoustics; Underwater communication; Wireless communication; Doppler distortion; Hankel matrix; OFDM; Total least squares; Underwater acoustic communications; Vandermonde decomposition;
Conference_Titel :
Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
978-1-4244-4295-9
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2010.5495258
