Real-Time Multi-Frequency Modulation Using Differentially-Encoded Signal Constellations

Abstract

This report discusses advances in the development of a multi- frequency modulation (MFM) packet communications system on an industry standard computer. Transmitter and receiver programs are described that control vector signal processors and data acquisition devices. Further, these programs encode, modulate, demodulate, and decode the MFM signal. The throughput data rate was doubled, the encoding/decoding process was implemented in near real-time, and a personal computer plug-in board was designed and built to provide synchronization between the transmitter and receiver. This MFM implementation provided acceptable bit error rates at input signal-to-noise ratios of 15 dB and above.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1990
Accession Number
ADA236839

Entities

People

  • Peter G. Basil

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acquisition
  • Coast Guard
  • Coding
  • Communications Techniques
  • Computer Programs
  • Computers
  • Data Acquisition
  • Data Rate
  • Data Transmission
  • Decoding
  • Digital Communications
  • Frequency
  • Frequency Modulation
  • Modulation
  • Personal Computers
  • Signal Processing
  • Standards

Fields of Study

  • Engineering
  • Physics

Readers

  • Radio communications and signal processing.