Joint coding-precoding with low-complexity turbo-decoding

Zhengdao Wang, Shengli Zhou, Georgios B. Giannakis

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

We combine error-control coding with linear precoding (LP) for flat-fading channels, as well as for wireless orthogonal frequency-division multiplexing transmissions through frequency-selective fading channels. The performance is analyzed and compared with the corresponding error-control-coded system without precoding. By wedding LP with conventional error-control coding, the diversity order becomes equal to the error-control code's minimum Hamming distance times the precoder size. We also derive a low-complexity turbo-decoding algorithm for joint coded-precoded transmissions. We analyze the decoding complexity and compare it with an error-control-coded system without LP. Extensive simulations with convolutional and turbo codes for HiperLan/2 channels support the analysis and demonstrate superior performance of the proposed system.

Original languageEnglish (US)
Pages (from-to)832-842
Number of pages11
JournalIEEE Transactions on Wireless Communications
Volume3
Issue number3
DOIs
StatePublished - May 1 2004

Keywords

  • Coding
  • Diversity
  • Fading
  • HiperLan
  • Linear precoding (LP)
  • Orthogonal frequency-division multiplexing (OFDM)

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