Accession Number:

ADA232421

Title:

Error Control Coding for Multi-Frequency Modulation

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1990-06-01

Pagination or Media Count:

82.0

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 EbN0 were analyzed, and bit error performance waa weighed against reduction in information rate to determine the value of the codes.

Subject Categories:

  • Cybernetics
  • Command, Control and Communications Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE