Reducing the overhead of OFDM communications over underwater acoustic channels

Authors:
Zhiqiang Liu;T. C. Yang
Affiliations:
Acoustic Signal Processing and Systems, Washington, DC;National Sun Yat-sen University, Kaohsiung, Taiwan
Venue:
Proceedings of the Seventh ACM International Conference on Underwater Networks and Systems
Year:
2012

Citing 2
Cited 0

Sparse channel estimation for multicarrier underwater acoustic communication: from subspace methods to compressed sensing

IEEE Transactions on Signal Processing
Detection, Synchronization, and Doppler Scale Estimation with Multicarrier Waveforms in Underwater Acoustic Communication

IEEE Journal on Selected Areas in Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

In this paper, we propose a receiver design for single-input multiple-output (SIMO) orthogonal frequency division multiplexing (OFDM) communications over underwater acoustic (UWA) channels. The proposed design consists of two key components: i) time reversal based symbol detection that enables the use of short guard time intervals for inter-block interference avoidance; and ii) decision-directed channel tracking with error propagation control that eliminates the need of periodic training for channel tracking. The goal of our design is to improve bandwidth efficiency by reducing the amount of overhead typically associated with SIMO-OFDM UWA communications. The proposed design is tested at a sea-going experiment. The experimental results confirm the merits of our design and demonstrate considerable improvements over a competing alternative.