Permutation sequences and coded PAM signals with spectral nulls at rational submultiples of the symbol frequency

Khmaies Ouahada, Theo G. Swart, Hendrik C. Ferreira

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Coded PAM signals with spectral nulls at rational submultiples of the symbol frequency are presented. Spectral shaping using permutation symbols and distance-preserving mappings (DPMs) are two techniques presented in this paper to design codes with better error correction capability, which make them achieve a significant decoding gain compared to other published codes. The use of Viterbi decoding algorithm, gives these new codes an advantage with their property of no error propagation. The well shaped power spectral densities of these new codes may overcome some communications problem like zero frequency components.

Original languageEnglish
Pages (from-to)87-108
Number of pages22
JournalCryptography and Communications
Volume3
Issue number2
DOIs
Publication statusPublished - Jun 2011

Keywords

  • Code constructions
  • Distance-preserving mappings
  • Permutation coding
  • Pulse amplitude modulation
  • Spectral shaping

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computational Theory and Mathematics
  • Applied Mathematics

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