Modification of turbo equalization with LMMSE equalizer

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal

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  • Sen Jiang
  • Yong-Qiang Zhang
  • Hong Sun
  • Ping Li

Related Research Unit(s)


Original languageEnglish
Pages (from-to)628-634
Journal / PublicationProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2003


TitleAPOC 2003: Asia-Pacific Optical and Wireless Communications: Optical Transmission, Switching, and Subsystems
Period4 - 6 November 2003


This paper investigates turbo equalization (TE) with linear minimum mean squared error (LMMSE) equalizer, which has much lower complexity but much worse performance than TE with maximum a posteriori (MAP) equalizer because of inefficient information processing of LMMSE equalizer. Motivated by forward and backward recursions of MAP algorithm, three methods are presented to improve turbo equalization with LMMSE equalizer (TE-LMMSE). In the simulation, they all obtain more than 2.5-dB performance gain over TE-LMMSE with no or some complexity price.

Research Area(s)

  • Intersymbol interference, Iterative methods, Turbo equalization