Doppler Estimation and Data detection for Underwater Acoustic ZF-OFDM Receiver

Alain Y. Kibangou 1, 2 Laurent Ros 3 Cyrille Siclet 3
1 NECS - Networked Controlled Systems
Inria Grenoble - Rhône-Alpes, GIPSA-DA - Département Automatique
3 GIPSA-CICS - CICS
GIPSA-DIS - Département Images et Signal
Abstract : A new scheme for Doppler estimation and data detection for OFDM underwater acoustic communications is derived in this paper. We design the OFDM symbol as a concatenation of two sub-blocks. The first one is shorter and carries out few data with few subcarriers whereas the second one contains both informative and pilot symbols. The first sub-block serves to estimate the Doppler scaling factor while the pilots in the second sub-block are used for estimating the equivalent channel. Both estimation approaches are based on high resolution methods for solving harmonic retrieval problems in time and frequency domains respectively. Each sub-block contains a cyclic suffix, which allows having more data to be processed. The effectiveness of the proposed scheme is evaluated by means of simulation results.
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Alain Y. Kibangou, Laurent Ros, Cyrille Siclet. Doppler Estimation and Data detection for Underwater Acoustic ZF-OFDM Receiver. 7th International Symposium on Wireless Communication Systems (ISWCS 2010), Sep 2010, York, United Kingdom. pp.n.c. ⟨hal-00498161⟩

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