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https://hdl.handle.net/2440/22850
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Type: | Journal article |
Title: | Decision-feedback equalization with fixed-lag smoothing in nonlinear channels |
Author: | Bartel, D. White, L. |
Citation: | Digital Signal Processing, 2006; 16(5):577-587 |
Publisher: | Academic Press Inc Elsevier Science |
Issue Date: | 2006 |
ISSN: | 1051-2004 |
Statement of Responsibility: | D.W. Bartel and L.B. White |
Abstract: | Significant error rates are common in nonlinear communication and digital storage channels, due to nonlinear intersymbol interference (ISI). The decision-feedback equalizer (DFE) is often used to combat ISI, by providing nonlinear feedforward and feedback filters to compensate the nonlinear distortion. This paper presents recent work on a DFE that incorporates fixed-lag smoothing, termed the FLS DFE. We derive the FLSDFE estimator over(X, ̂)t - n | t for the case of binary-phase-shift keying inputs to a digital communication channel described by a truncated Volterra series. Simulation results are presented, showing the existence of 'resonance' phenomena within a state-space model of filtering-error propagation. The FLSDFE is shown to experience equalization performance that is strongly channel-dependent, highlighting a potential problem with robustness. © 2005. |
DOI: | 10.1016/j.dsp.2005.01.008 |
Published version: | http://dx.doi.org/10.1016/j.dsp.2005.01.008 |
Appears in Collections: | Aurora harvest 6 Electrical and Electronic Engineering publications |
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