Simulation and Analysis of a MFQPSK Signal Transmitted through an Acoustic Medium

Abstract

A multi-frequency quadrature phase shift keyed (MFQPSK) signal has been developed at NPS to be used in computer-to-computer communications. This report discusses the simulation of a MFQPSK signal transmitted from a moving transmitter platform through a near vertical acoustic channel as seen by a moored receiver. The simulated received signal is tested against MFQPSK signal theory. The simulation was developed to be an experimental tool for testing various Doppler, synchronization, and coding algorithms/techniques for a MFQPSK communication signal. The degradation of output signal-to-noise ratio due to Doppler shifts caused by the moving transmitter is analyzed. An algorithm for estimating Doppler compression/expansion in the received signal is evaluated. Keywords: MFM(Multifrequency Modulation); Computer communications; Data links; Bandpass acoustic channels; Theses.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1989
Accession Number
ADA220345

Entities

People

  • Anita S. Daniel

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Channels
  • Algorithms
  • Bandwidth
  • Coding
  • Communication Channels
  • Communication Systems
  • Computer Communications
  • Computer Programming
  • Computers
  • Data Links
  • Digital Communications
  • Engineering
  • Frequency Modulation
  • Gaussian Noise
  • Matched Filters
  • Phase Shift
  • Statistics

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Radio communications and signal processing.