In this paper, we consider joint blind optimization schemes for decision feedback equalizer (DFE) coefficients and decision device, and propose adaptive solutions based on a soft decision device which combines a blind infinite impulse response (IIR) filtering adaptation and the conventional decision directed (DD) DFE adaptation. The benefits of our approach are mainly three-fold: 1) the initialization of DFE taps does not rely on a training sequence, 2) the transition between the (re}initialization period and the tracking period is continuous and consequently the equalizer exhibits robust performance under sudden time variation in the multipath channel, and 3) the optimized soft decision device mitigates error propagation of the DFE equalizer and further reduces mean square error (MSE) of DFE.
|Title of host publication
|IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - 2004
|4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003 - Rome, Italy
Duration: 2003 Jun 15 → 2003 Jun 18
|4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
|03/6/15 → 03/6/18
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Science Applications
- Information Systems