Exploitation of Environmental Complexity in Shallow Water Acoustic Data Communications

Abstract

Complexity of the channel is beneficial for time reversal communications. After multichannel combining, each user signal is processed with a single channel decision feedback equalizer (DFE) to remove any residual intersymbol interference (ISI) and compensate for channel fluctuations during the packet transmission. This same approach can be applied in a synthetic aperture context where multiple transmissions (separated spatially) substitute for multiple receive elements. As an alternative to the passive time reversal technique, an iterative equalization and decoding approach also has been developed for recovering information transmitted through a shallow water communication channel.

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Document Details

Document Type
Technical Report
Publication Date
Mar 27, 2009
Accession Number
ADA497922

Entities

People

  • William Hodgkiss

Organizations

  • Scripps Institution of Oceanography

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Algorithms
  • Channel Models
  • Communication Channels
  • Decoding
  • Delta Functions
  • Department Of Defense
  • Digital Communications
  • Equalization
  • Governments
  • Information Operations
  • Intersymbol Interference
  • Military Research
  • Multichannel
  • Shallow Water
  • Signal Processing
  • Water

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Radio communications and signal processing.