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Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/41D1A071-60CF-44A6-A69F-7F4DA99F67FD | - |
| Identifier | http://www.telecom.tuc.gr/Greek/Liavas/publications/On%20the%20Robustness%20of%20the%20Finite-Length%20MMSE-DFE%20With%20Respect%20to%20Channel%20and%20Second-Order%20Statistics%20Estimation%20Errors.pdf | - |
| Language | en | - |
| Extent | 9 pages | en |
| Title | On the robustness of the finite-length MMSE-DFE with respect to channel and second-order statistics estimation errors | en |
| Creator | Liavas Athanasios | en |
| Creator | Λιαβας Αθανασιος | el |
| Content Summary | The finite-length minimum mean square error decision-feedback equalizer (MMSE-DFE) is an efficient structure mitigating intersymbol interference (ISI) introduced by practically all communication channels at high-enough symbol rates. The filters constituting the MMSE-DFE, as well as related performance measures, can be computed by assuming perfect knowledge of the channel impulse response and the input and noise second-order statistics (SOS). In practice, we estimate the unknown quantities, and thus, inevitable estimation errors arise. In this paper, we model the estimation errors as small perturbations, and we derive a second-order approximation to the excess MSE. Furthermore, we derive second-order approximations to the mean excess MSE in terms of the parameter estimation error covariance matrices and simple and informative bounds, revealing the factors that govern the behavior of MMSE-DFE under mismatch. Simulations confirm that the derived second-order approximations provide accurate estimates of the MMSE-DFE performance degradation due to mismatch | en |
| Type of Item | Πλήρης Δημοσίευση σε Συνέδριο | el |
| Type of Item | Conference Full Paper | en |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-11-08 | - |
| Date of Publication | 2001 | - |
| Subject | perturbation analysis | en |
| Bibliographic Citation | A. P. Liavas .(2001).On the robustness of the finite-length MMSE-DFE with respect to channel and second-order statistics estimation errors.Presented at IEEE Workshop on Statistical Signal Processing.[online].Available:http://www.telecom.tuc.gr/Greek/Liavas/publications/On%20the%20Robustness%20of%20the%20Finite-Length%20MMSE-DFE%20With%20Respect%20to%20Channel%20and%20Second-Order%20Statistics%20Estimation%20Errors.pdf | en |
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