A novel suboptimal piecewise-linear-log-MAP algorithm for turbo decoding

Yu Yu Ivanov, A. N. Romanyuk, A. Ia Kulyk, O. V. Stukach

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

In this paper, a new suboptimal modification for the log-MAP turbo decoding algorithm is proposed. This method (PL-log-MAP) based on the piecewise linear approximation of the the compensation term (correction function) in the Jacobian logarithm used by the MAP (BCJR) decoder. Using the proposed approximation, the complex functions ln(.) and exp(.) in the log-MAP algorithm can be estimated with high accuracy and lower computational complexity. The efficacy of the proposed approximation is investigated and demonstrated by applying it to digital communication system. The performance of the PL-log-MAP algorithm is shown to have the closest performance to the original log-MAP solution.

Original languageEnglish
Title of host publication2015 International Siberian Conference on Control and Communications, SIBCON 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479971022
DOIs
Publication statusPublished - 1 Jul 2015
Event2015 International Siberian Conference on Control and Communications, SIBCON 2015 - Omsk, Russian Federation
Duration: 21 May 201523 May 2015

Other

Other2015 International Siberian Conference on Control and Communications, SIBCON 2015
CountryRussian Federation
CityOmsk
Period21.5.1523.5.15

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Keywords

  • approximation
  • BER
  • compensation term
  • correction function
  • iterative decoding
  • Jacobian logarithm
  • log-MAP
  • MAP (BCJR) algorithm
  • max-log-MAP
  • turbo code

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Systems Engineering

Cite this

Ivanov, Y. Y., Romanyuk, A. N., Kulyk, A. I., & Stukach, O. V. (2015). A novel suboptimal piecewise-linear-log-MAP algorithm for turbo decoding. In 2015 International Siberian Conference on Control and Communications, SIBCON 2015 - Proceedings [7147195] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SIBCON.2015.7147195