Coupled Research in Ocean Acoustics and Signal Processing for the Next Generation of Underwater Acoustic Communication Systems

Abstract

Technical work this period focused on two areas. The first was continuation of work on developing a methodology within the framework of asymptotic random matrix theory (RMT) to explicitly model the time variability of acoustic channels and using this to predict underwater acoustic communications systems performance. Prior methods have accommodated time variability by assuming that the channel is time invariant over an appropriately short interval of time. By explicitly modeling the time variability within the RMT framework it is hoped that the resulting analysis will more accurately predict the trade-offs associated with the rate of channel fluctuations, the number and configuration of hydrophone array elements, the size of filters in subsequent equalizers, and the structure of the equalizer adaptation algorithms. The work has progressed with the development of a framework in which the channel variability represented by the Delay-Doppler spread function denoted by U(epsilon, nu).

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Document Details

Document Type
Technical Report
Publication Date
Mar 18, 2015
Accession Number
ADA614150

Entities

People

  • James Preisig

Tags

DTIC Thesaurus Topics

  • Acoustic Channels
  • Acoustic Communications
  • Acoustics
  • Ad Hoc Networks
  • Algorithms
  • Communication Systems
  • Data Analysis
  • Demographic Cohorts
  • Engineering
  • Frequency Domain
  • Information Operations
  • Matrix Theory
  • Mesh Networks
  • Military Research
  • Signal Processing
  • Underwater Acoustic Communications
  • Wireless Communications

Readers

  • Linear Algebra
  • Marine Mammal Biology
  • Phased Array Antenna Design.