Complexity and performance of turbo equalization for OFDM systems in doubly selective channels

Chae Hyukjin, Kim Yohan, Kyoung Lee Jun, Ku Kim Dong

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

1 Citation (Scopus)

Abstract

Time and frequency selective channels or doubly selective channels leads to inter-carrier interference(ICI) in orthogonal frequency division multiplexing (OFDM) systems. We investigate how effectively turbo equalization could reduce the complexity burden of frequency domain equalization in the presence of doubly selective fading channels. We split the frequency domain matrix into several small sub-matrices that contain significant channel information and combine the MMSE equalization and the MAP decoding for iterative structure based on sub-matrices of frequency domain channel matrix. Simulation results show how much complexity reduction the iterative method can offer with better BER performance than that of the non iteration method. The iterative method has 70% computational complexity reduction with achieving IdB performance improvement in our simulations.

Original languageEnglish
Title of host publication2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Pages1608-1611
Number of pages4
DOIs
Publication statusPublished - 2007
Event2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring - Dublin, Ireland
Duration: 2007 Apr 222007 Apr 25

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
CountryIreland
CityDublin
Period07/4/2207/4/25

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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    Hyukjin, C., Yohan, K., Jun, K. L., & Dong, K. K. (2007). Complexity and performance of turbo equalization for OFDM systems in doubly selective channels. In 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring (pp. 1608-1611). [4212763] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2007.335