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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Riani, J. van Beneden, S. Bergmans, J.W.M. Immink, A. |
| Copyright Year | 2005 |
| Description | Author affiliation: Eindhoven Univ. of Technol. (Riani, J.; van Beneden, S.; Bergmans, J.W.M.) |
| Abstract | Receivers for partial response maximum-likelihood systems typically use a linear equalizer followed by a Viterbi detector. The equalizer tries to confine the channel intersymbol interference to a short span in order to limit the implementation complexity of the Viterbi detector. Equalization is usually made adaptive in order to compensate for channel variations. Conventional adaptation techniques, e.g. LMS, are in general suboptimal in terms of bit-error rate. In this paper we present a new equalizer adaptation algorithm that seeks to minimize bit-error rate at the Viterbi detector output. The algorithm extracts information from the sequenced amplitude margin (SAM) histogram and incorporates a selection mechanism that focuses adaptation on particular data and noise realizations. From a complexity standpoint, the algorithm is as simple as the conventional LMS algorithm. Simulation results, for an idealized optical storage channel, confirm a substantial performance improvement relative to existing adaptation algorithms |
| Starting Page | 6 |
| Ending Page | 2128 |
| File Size | 254869 |
| Page Count | 2123 |
| File Format | |
| ISBN | 0780394143 |
| DOI | 10.1109/GLOCOM.2005.1578039 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-11-28 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Bit error rate Viterbi algorithm Detectors Least squares approximation Optical noise Maximum likelihood detection Intersymbol interference Adaptive equalizers Data mining Histograms |
| Content Type | Text |
| Resource Type | Article |
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