Symbol by symbol Doppler rate estimation for highly mobile underwater OFDM

Authors:
Nathan Parrish;Sumit Roy;Payman Arabshahi
Affiliations:
University of Washington, Seattle, Washington;University of Washington, Seattle, Washington;University of Washington, Seattle, Washington
Venue:
Proceedings of the Fourth ACM International Workshop on UnderWater Networks
Year:
2009

Citing 3
Cited 1

Fundamentals of statistical signal processing: estimation theory

Fundamentals of statistical signal processing: estimation theory
Fast estimators of time delay and Doppler stretch based ondiscrete-time methods

IEEE Transactions on Signal Processing
Iterative Carrier Frequency Offset and Channel Estimation for Underwater Acoustic OFDM Systems

IEEE Journal on Selected Areas in Communications

D-sync: Doppler-based time synchronization for mobile underwater sensor networks

Proceedings of the Fifth ACM International Workshop on UnderWater Networks

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Abstract

We propose an OFDM receiver capable of estimating and correcting, on a symbol-by-symbol basis, the subcarrier dependent Doppler shifting due to the movement of source and receiver in an underwater acoustic network. We propose two methods of estimation: one of which is based upon the marginal maximum likelihood principle, and one of which is ad-hoc. We compare the performance of both estimators to the Cramer-Rao lower bound. We show through simulation that the proposed receiver design performs well for a source that is accelerating at 0.29 m/s2.