A blind decision feedback equalizer with efficient structure-criterion switching control
This paper considers and proposes an innovated method of structure criterion switching control for the self-optimized blind decision feedback equalizer (DFE) scheme which operates by switching between adaptation modes according to the mean square error (MSE) convergence state. The new switching cont...
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Published in | Facta universitatis. Series Electronics and energetics Vol. 31; no. 4; pp. 599 - 612 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
01.12.2018
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Online Access | Get full text |
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Summary: | This paper considers and proposes an innovated method of structure criterion
switching control for the self-optimized blind decision feedback equalizer
(DFE) scheme which operates by switching between adaptation modes according
to the mean square error (MSE) convergence state. The new switching control
shortens the blind acquisition period time of the DFE and, consequently,
speeds up its effective convergence rate. The switching control is based on
the variable switching threshold which combines the commonly used MSE
estimate of the DFE?s output and a posteriori error of the all-pole whitener
performing front-end amplitude equalization during the blind operation mode.
The efficiency of the DFE switching control is verified by simulations of
single-carrier system transmitting QAM signals over multipath channels. |
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ISSN: | 0353-3670 2217-5997 |
DOI: | 10.2298/FUEE1804599K |