ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
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A Simplified Decoding Algorithm Using Symbol Transformation for Turbo Pragmatic Trellis-Coded Modulation

  • Choi, Eun-A (Digital Broadcasting Research Division, ETRI) ;
  • Oh, Deock-Gil (Digital Broadcasting Research Division, ETRI) ;
  • Jung, Ji-Won (Department of Radio and Science Engineering, Korea Maritime University) ;
  • Kim, Nae-Soo (Telematics & USN Research Division, ETRI) ;
  • Kim, Young-Wan (Department of Electronics and Information Engineering, Kunsan National University)
  • Received : 2004.09.17
  • Published : 2005.04.30
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Abstract

This paper presents the application of a turbo coding technique combined with a bandwidth efficient method known as trellis-coded modulation. A transformation applied to the incoming I-channel and Q-channel symbols allows the use of an off-the-shelf binary/quadrature phase shift keying (B/QPSK) turbo decoder without any modifications. A conventional turbo decoder then operates on transformed symbols to estimate the coded bits. The uncoded bits are decoded based on the estimated coded bits and locations of the received symbols.

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References

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  2. EN 301 790, Digital Video Broadcasting(DVB);Interaction Channel for Satellite Distribution Systems
  3. IEEE Communication Letters v.4 no.2 Turbo Coding Applied to Pragmatic Trellis-Coded Modulation Wahlen, Bruce E.;Mai, Calvin Y.
  4. IEICE Trans. Fundamentals v.E81-A no.10 Improvement of Turbo Trellis-Coded Modulation System Haruo Ogiwara(et al.)