Reducing the overhead of OFDM communications over underwater acoustic channels
Authors: 
Zhiqiang Liu, T. C. YangAuthors Info & Claims
Zhiqiang Liu, T. C. YangAuthors Info & ClaimsArticle No.: 11, Pages 1 - 6
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.
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Index Terms
- Reducing the overhead of OFDM communications over underwater acoustic channels
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Information & Contributors
Information
Published In
November 2012
243 pages
ISBN:9781450317733
DOI:10.1145/2398936
- General Chairs:
- Mario Gerla,
- T. C. Yang,
- Program Chairs:
- Tommaso Melodia,
- Liuqing Yang
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Published: 05 November 2012
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