Performance of turbo equalized double window cancellation and combining in large delay spread channels

Jun Hwan Lee, Tomoaki Ohtsuki, Masao Nakagawa

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

1 Citation (Scopus)

Abstract

In the orthogonal frequency division multiplexing (OFDM) the multipath exceeding a guard interval (GI) is one of obstacles for high data rate transmission. For the purpose of the interference suppression the authors have proposed the canceller algorithm naming DWCC, where the canceller operation is based on decision feedback equalization (DFE), but the performance of the canceller is still subject to the frequency selectivity since the tentative symbol detection at the deep faded subcarriers could not be reliable. In this paper turbo equalized double window cancellation and combining (TE-DWCC) is proposed. Throughout the paper, it is found that the error rate performance of TE-DWCC depends on how to incorporate the channel decoding gain from turbo equalization into DWCC. In addition, it is also shown that TE-DWCC is more compatible with the hard decision feedback (HDF) rather than the soft decision feedback (SDF) due to the ICI elimination method. Finally, by varying interference level, code rate, and decision feedback type, the performances of TE-DWCC are compared with the conventional canceller that adopts turbo equalization in the exponentially distributed slow fading channel.

Original languageEnglish
Title of host publication2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
DOIs
Publication statusPublished - 2009 Dec 1
Event2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009 - Tokyo, Japan
Duration: 2009 Sep 132009 Sep 16

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Other

Other2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
CountryJapan
CityTokyo
Period09/9/1309/9/16

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Lee, J. H., Ohtsuki, T., & Nakagawa, M. (2009). Performance of turbo equalized double window cancellation and combining in large delay spread channels. In 2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009 [5450286] (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC). https://doi.org/10.1109/PIMRC.2009.5450286