COMBINED QUADRATURE AMPLITUDE MODULATION AND CONVOLUTIONAL CODES FOR CROSS-COUPLED MULTIDIMENSIONAL CHANNELS.

M. Kavehrad, P. J. McLane, C. E. Sundberg

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The performance of cross-coupled, M-ary quadrature amplitude modulation (QAM) systems is determined for the case in which bandwidth efficient trellis codes are used to combat interference. Performance with and without compensation for cross-coupled interference is presented. It is found that simple trellis codes can maintain the error probability at an acceptable level for cross-coupling parameters that render uncoded systems unusable. Up to two-dimensional trellis codes are considered for four-dimensional QAM signals. The average probability of the most likely error events is calculated by using the method of moments. The results are applicable to any digital communication system using multidimensional quadrature amplitude modulation, e. g. , voiceband modems and cross-polarized radio systems. It is found that simple trellis codes have coding gains of more than 5 dB in cross-coupling interference compared to 3 dB for a Gaussian channel.

Original languageEnglish (US)
Pages (from-to)1907-1912
Number of pages6
JournalConference Record - International Conference on Communications
StatePublished - 1986

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'COMBINED QUADRATURE AMPLITUDE MODULATION AND CONVOLUTIONAL CODES FOR CROSS-COUPLED MULTIDIMENSIONAL CHANNELS.'. Together they form a unique fingerprint.

  • Cite this