A modified iterative equalization scheme based on precoding

Shuangshuang Han, Dongfeng Yuan, Xiang Cheng

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

Abstract

This paper proposes a modified iterative equalization (MIE) scheme based on precoding. First we analyze and compare the performance of the improved MAX-Log-MAP (I-MLM) algorithm called MIE-I-MLM scheme and two traditional equalization algorithms in MIE scheme. Second, based on the good understanding of the performance of precoding and MIE-I-MLM scheme, we exploit precoding in MIE-I-MLM, and then find that the performance of precoded MIE-I-MLM is obviously better than that of non-precoded and can even exceed the bound of an ISI-free channel in higher SNR, while its performance is lower than the one of non-precoded in low SNR. Therefore, we propose a novel scheme to get better performance by using a mixture of precoded and non-precoded scheme. Both analytical and simulation results demonstrate that the proposed novel scheme can achieve better performance without increase in computational complexity.

Original languageEnglish
Title of host publicationIET 2nd International Conference on Wireless, Mobile and Multimedia Networks, ICWMMN 2008
Pages372-375
Number of pages4
Edition545 CP
DOIs
Publication statusPublished - 2008
EventIET 2nd International Conference on Wireless, Mobile and Multimedia Networks, ICWMMN 2008 - Beijing, China
Duration: 12 Oct 200815 Oct 2008

Conference

ConferenceIET 2nd International Conference on Wireless, Mobile and Multimedia Networks, ICWMMN 2008
CountryChina
CityBeijing
Period12/10/0815/10/08

Keywords

  • Inter-symbol interference (ISI)
  • Maximum a posteriori (MAP)
  • Precoding
  • Turbo equalization (TE)

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  • Cite this

    Han, S., Yuan, D., & Cheng, X. (2008). A modified iterative equalization scheme based on precoding. In IET 2nd International Conference on Wireless, Mobile and Multimedia Networks, ICWMMN 2008 (545 CP ed., pp. 372-375) https://doi.org/10.1049/cp:20081014