A low complexity interference suppression scheme for high mobility STBC-OFDM systems

Chorng Ren Sheu*, Jia Wei Liu, Chuan Yuan Huang, Chia-Chi Huang

*Corresponding author for this work

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

3 Scopus citations

Abstract

A novel low complexity scheme based on received data symbol pair reordering and optimal selection, is proposed for space time block coded (STBC) OFDM systems to suppress co-channel interference (CCI) and inter-carrier interference (ICI) caused by time-varying channels. The proposed scheme reorders the conventional received data symbol pairs to produce extra received data symbol pairs. Then, the STBC decoding is performed on all the received data symbol pairs, and the STBC decoding output signals are used to obtain multiple combined signals. Finally, the optimal combined signal with minimum interference is selected to suppress CCI and ICI, and the system performance will be improved as long as the channels are mutually uncorrelated. Our computer simulation results verify that the proposed low complexity scheme achieves good performance for high mobility 2x2 STBC-OFDM systems in the ITU Vehicular A (VA) channels.

Original languageEnglish
Title of host publicationIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
DOIs
StatePublished - 20 Aug 2012
EventIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Yokohama, Japan
Duration: 6 May 20129 Jun 2012

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Conference

ConferenceIEEE 75th Vehicular Technology Conference, VTC Spring 2012
CountryJapan
CityYokohama
Period6/05/129/06/12

Keywords

  • co-channel interference
  • inter-carrier interference
  • OFDM
  • optimal selection
  • received data symbol pair reordering
  • space time block code

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    Sheu, C. R., Liu, J. W., Huang, C. Y., & Huang, C-C. (2012). A low complexity interference suppression scheme for high mobility STBC-OFDM systems. In IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings [6240121] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2012.6240121