Error Control Coding for Multi-Frequency Modulation

Abstract

Multi-frequency modulation (MFM) has been developed at NPS using both quadrature-phase-shift-keyed (QPSK) and quadrature-amplitude-modulated (QAM) signals with good bit error performance at reasonable signal-to-noise ratios. Improved performance can be achieved by the introduction of error control coding. This report documents a Fortran simulation of the implementation of error control coding into an MFM communication link with additive white Gaussian noise. Four Reed-Solomon codes were incorporated, two for 16-QAM and two for 32- QAM modulation schemes. The error control codes used were modified from the conventional Reed-Solomon codes in that one information symbol was sacrificed to parity in order to use a simplified decoding algorithm which requires no iteration and enhances error detection capability. Bit error rates as a function of SNR and Eb/N0 were analyzed, and bit error performance waa weighed against reduction in information rate to determine the value of the codes.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1990
Accession Number
ADA232421

Entities

People

  • Robert W. Ives

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Algorithms
  • Amplitude
  • Coding
  • Communication Channels
  • Communication Systems
  • Computer Programming
  • Computer Programs
  • Computers
  • Data Transmission
  • Decoding
  • Detection
  • Electrical Engineering
  • Frequency
  • Frequency Modulation
  • Modulation
  • Simulations
  • Symbols

Fields of Study

  • Engineering

Readers

  • Computer Programming and Software Development.
  • Radio communications and signal processing.
  • Systems Analysis and Design