Time-Varying FIR Decision Feedback Equalization of Doubly-Selective Channels

Imad Barhumi, Geert Leus, Marc Moonen

Research output: Contribution to conferencePaperpeer-review

16 Citations (Scopus)


In this paper, we propose a minimum mean-square error (MMSE) time-varying (TV) finite impulse response (FIR) decision feedback equalizer (DFE) for doubly-selective (time- and frequency-selective) channels. We use the basis expansion model (BEM) to approximate the doubly-selective channel and to design the TV FIR DFE. This allows us to turn a large design problem into an equivalent small design problem, containing only the BEM coefficients of the doubly-selective channel and the BEM coefficients of the TV FIR feedforward and feedback equalization filters. Through computer simulations we show that the performance of the proposed TV FIR DFE approaches the performance of the block DF equalizer, while the equalization as well as the design complexity are generally much lower.

Original languageEnglish
Number of pages6
Publication statusPublished - 2003
Externally publishedYes
EventIEEE Global Telecommunications Conference GLOBECOM'03 - San Francisco, CA, United States
Duration: Dec 1 2003Dec 5 2003


OtherIEEE Global Telecommunications Conference GLOBECOM'03
Country/TerritoryUnited States
CitySan Francisco, CA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change


Dive into the research topics of 'Time-Varying FIR Decision Feedback Equalization of Doubly-Selective Channels'. Together they form a unique fingerprint.

Cite this